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Цитироватьhttp://qzss.go.jp/en/events/kamakura_170809.html
Exhibition of QZS-4
Aug.18,2017

The completed fourth Quasi-Zenith Satellite (QZS-4) was exhibited to members of the press on August 8 at Mitsubishi Electric Corporation's Kamakura Works (Kamakura City, Kanagawa).

(https://img.novosti-kosmonavtiki.ru/123299.jpg)

QZS-4 has the same frame as QZS-2, which was launched on June 1. It is 6.5 meters tall and 2.8 meters wide. When deployed, the solar array wings have a diameter of 19 meters.

(https://img.novosti-kosmonavtiki.ru/123300.jpg)

Overview of QZS-4 at the press briefing

At the press briefing held on the same day, Mr. Go Takizawa, executive director, QZSS Strategy Office, National Space Policy Secretariat, Cabinet Office described the current state of QZS-1 and QZS-2 (which are currently in orbit) and preparations to launch QZS-3, and gave an overview of QZS-4. He introduced applications in fields such as i-Construction, automated driving support, and Electronic Road Pricing (ERP), explaining, "The four-satellite constellation will provide a foundation for the world's first Centimeter Level Augmentation Service (CLAS)."

Next, Mr. Takeshi Okamoto (Executive Director, Quasi-Zenith Satellite System Project, Kamakura Works, Mitsubishi Electric Corporation) gave an overview of the QZS-4 frame, including comparisons with QZS-1. The dry weight (without propellant for trajectory control) of the frame is approximately 1.6 tons, and QZS-4 has a launch mass of approximately four tons. He emphasized that the DS2000, Mitsubishi Electric Corporation's standard satellite platform, is a highly reliable satellite bus that has been operated for a total of 68 years with 11 satellites in orbit.

Just like QZS-2, the QZS-4 will use the H2A202 launch vehicle with two solid rocket boosters (SRB-A) on each side of the core frame.

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 25 авг. (https://twitter.com/nvslive/status/900970213067206659)

8月25日三菱重工の飛島工場でH-IIAロケット36号機が報道公開されました。 ロケットはこの後9月5日に出荷され9月8日には種子島宇宙センターへ搬入される予定です。#nvslive (https://twitter.com/hashtag/nvslive?src=hash)
(https://img.novosti-kosmonavtiki.ru/166531.jpg)

Цитировать25 августа РН H-IIA № 36 была выпущена на заводе Tobishima Mitsubishi Heavy Industries. Ракета будет отправлена с завода 5 сентября и будет доставлена в Космический центр Танегасима 8 сентября.

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 25 авг. (https://twitter.com/nvslive/status/900970882826240000)

今回の取材は　.@korekan1 (https://twitter.com/korekan1) さんにお手伝いを頂きました。#nvslive (https://twitter.com/hashtag/nvslive?src=hash)
(https://img.novosti-kosmonavtiki.ru/166532.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 26 авг. (https://twitter.com/nvslive/status/901467506988113920)

H-2Aロケット36号機 コア機体報道公開の画像をflickrに公開しました。 #flickr (https://twitter.com/hashtag/flickr?src=hash) https://flic.kr/s/aHsm3v4KAq  (https://t.co/uUdSI8Rvfl)

ЦитироватьИзображение РН H-2A F36 было выпущено для Flickr.

Цитировать

https://www.flickr.com/photos/nvslive/sets/72157685611074144/ - 58 photos

https://img.novosti-kosmonavtiki.ru/132286.jpg
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Цитировать (https://img.novosti-kosmonavtiki.ru/185634.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会いたい！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 26 авг. (https://twitter.com/mageshiman1025/status/901425943092187136)

36号機の打ち上げ日の発表はまだだけど、直近3機は、
F33・2月14日搬入ー3月17日打ち上げ
F34・4月29日搬入ー6月 1日打ち上げ
F35・7月 3日搬入ー8月11日(当初)
ということは、最短で10月 9日？
(https://img.novosti-kosmonavtiki.ru/166670.jpg)

ЦитироватьДата запуска блока 36 еще не объявлена,
F33 · Вывоз с завода 14 февраля - Запуск 17 марта
F34 · Вывоз с завода 29 апреля - Запуск 1 июня
F35 · Вывоз с завода 3 июля - Запуск 11 августа (начальное)
Самый вероятный срок запуска - 9 октября?

Цитировать (https://img.novosti-kosmonavtiki.ru/185634.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会いたい！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 24 авг. (https://twitter.com/mageshiman1025/status/900736425154314240)

H-ⅡA36号機用フェアリングとPAF(衛星分離部)が種子島宇宙センターに向けて、島間港を出発しました。
(https://img.novosti-kosmonavtiki.ru/166471.jpg)

Спойлер

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ЦитироватьГоловной обтекатель РН H - Ⅱ A36 и PAF (спутниковый сепаратор) отправлены в Космический центр Танегасима.

Цитироватьzandr пишет:
http://tass.ru/kosmos/4514122

ЦитироватьЯпония 10 октября запустит четвертый спутник "Митибики" для создания аналога GPS
ТОКИО, 29 августа. /ТАСС/. Запуск четвертого японского спутника связи "Митибики" для создания аналога американской системы глобального позиционирования GPS состоится 10 октября. Об этом сообщила во вторник компания Mitsubishi Heavy Industries, которая занимается производством ракет-носителей H-2A.
Дата старта соответствует примерному плану Японского агентства аэрокосмических исследований (JAXA) по расширению группировки этих аппаратов на орбите, несмотря на то, что предыдущий пуск в середине августа прошел с опозданием более чем на неделю. Это было связано с неблагоприятными погодными условиями и техническими проблемами.
После запуска четвертого по счету "Митибики" JAXA в 2018 году рассчитывает начать использовать спутники для дополнения американской системы GPS, поскольку иногда пользователи испытывают проблемы при плохом сигнале в труднодоступных местах. Предполагается, что к 2023 году на орбите будут находиться уже семь аппаратов "Митибики", работающих независимо от GPS.
Особенность японской системы позиционирования, получившей название QZSS, заключается в высокой степени шифрования сигналов. Как утверждается, это дает возможность надежно защитить их от помех, которые могут создавать недружественные государства или террористические организации. Помимо гражданских пользователей, на "Митибики" предполагается полностью переключить вооруженные силы и спецслужбы Японии.

ЦитироватьLaunch Schedule of MICHIBIKI No. 4 Aboard H-IIA Launch Vehicle No. 36

August 29, 2017 (JST)

Mitsubishi Heavy Industries, Ltd.
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

Mitsubishi Heavy Industries, Ltd. and JAXA announce the schedule of MICHIBIKI No. 4 launch, Quasi-Zenith Satellite System aboard H-IIA Launch Vehicle No. 36 as follows;

Launch Date                  : October 10, 2017
Launch Time                  : Approximately 7:00 a.m. (Japan Standard Time) *
Reserved Launch Period : October 11 through November 30, 2017
Location                        : Yoshinobu Launch Complex, JAXA's Tanegashima Space Center

* Launch time during the reserved launch period will vary.

ЦитироватьПлан запуска ракеты
«MICHIBIKI 4» (квазизенитный спутник)
/ H-IIA № 36 (H-IIA · F 36)

Цитировать (https://img.novosti-kosmonavtiki.ru/185634.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会いたい！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 21 ч. назад (https://twitter.com/mageshiman1025/status/905937016554229760)

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20 ч. назад (https://twitter.com/mageshiman1025/status/905954629929680896)

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18 ч. назад (https://twitter.com/mageshiman1025/status/905974666589642752)

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18 ч. назад (https://twitter.com/mageshiman1025/status/905975459116048384)

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18 ч. назад (https://twitter.com/mageshiman1025/status/905977070072852480)

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Цитировать11 ч. назад (https://twitter.com/mageshiman1025/status/906088920177192960)

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11 ч. назад (https://twitter.com/mageshiman1025/status/906092609608617988)

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7 ч. назад (https://twitter.com/mageshiman1025/status/906139337552683010)

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Цитировать7 ч. назад (https://twitter.com/mageshiman1025/status/906144247652302849)

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7 ч. назад (https://twitter.com/mageshiman1025/status/906153706801864705)

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5 ч. назад (https://twitter.com/mageshiman1025/status/906178964648898560)

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4 ч. назад (https://twitter.com/mageshiman1025/status/906192619889295365)

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Цитировать3 ч. назад (https://twitter.com/mageshiman1025/status/906202641151098880)

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9 мин. назад (https://twitter.com/mageshiman1025/status/906252488940113927)

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5 мин. назад (https://twitter.com/mageshiman1025/status/906253541118853120)

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Цитировать4 мин. назад (https://twitter.com/mageshiman1025/status/906254991005966336)

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3 мин. назад (https://twitter.com/mageshiman1025/status/906255505022042112)

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Спойлер

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Цитировать (https://img.novosti-kosmonavtiki.ru/185634.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会いたい！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 3 ч. назад (https://twitter.com/mageshiman1025/status/906858118474219520)

間もなく(22時より)、H-ⅡA36号機のコンテナの返送がスタート。 そう言えば今回の陸送、コア機体だけでも今年4回目・フェアリングや衛星(「みちびき」「こうのとり」)も含めると10数回目ということで、さすがの南日本新聞や鹿児島のTV局もほとんど取り上げてなかった。

Цитировать http://qzss.go.jp/en/events/h2af36_170830.html
Mitsubishi Heavy Industries Exhibited the first and second stages of QZS-4 Launch Vehicle

Sep.12,2017

Mitsubishi Heavy Industries, Ltd. (MHI) exhibited on August 25 to members of the press the first and the second stages of H-IIA Launch Vehicle Flight No. 36 (H-IIA F36), which will be used to launch the fourth Quasi-Zenith Satellite (QZS-4), at Tobishima Plant in Tobishima Village, Ama District, Aichi Prefecture. The two stages of the Launch Vehicle were exhibited with each engine equipped, LE-7A for first-stage and LE-5B for second-stage, excluding the Solid Rocket Boosters (SRB-A) and payload fairing (the nose cone that protects satellite).

(https://img.novosti-kosmonavtiki.ru/123301.jpg)

First and second stages of H-IIA F36

Launch on the H2A202 launch vehicle

Before the exhibition, Mr. Koki Nimura (Fellow, Senior Chief Engineer, Integrated Defense & Space Systems, MHI), who is in charge of H-IIA and H-IIB launches, gave an overview of the launch plan.

(https://img.novosti-kosmonavtiki.ru/123302.jpg)

Mr. Tatsuru Tokunaga, H-IIA and H-IIB Launch Vehicle Project Manager, Space Business Department, Integrated Defense & Space Systems, MHI (left) and Mr. Koki Nimura (right)

H-IIA Launch Vehicle Flight No. 35 (H-IIA F35) used for the QZS-3 launch on August 19 had an H2A204 type configuration with four SRB-As. Meanwhile, H-IIA F36 has an H2A202 type configuration with two SRB-As, same as H-IIA Launch Vehicle Flight No. 34 (H-IIA F34) used for the QZS-2 launch on June 1. This is because QZS-3 had a launch mass of 4,700 kilograms, which is heavier than QZS-2 and QZS-4 whose launch mass is 4,000 kilograms each.

(https://img.novosti-kosmonavtiki.ru/123303.jpg)

First-stage frame

(https://img.novosti-kosmonavtiki.ru/123304.jpg)

First-stage main engine

(https://img.novosti-kosmonavtiki.ru/123305.jpg)

Second-stage frame

(https://img.novosti-kosmonavtiki.ru/123306.jpg)

Second-stage engine

MHI Launch Services (MITSUBISHI HEAVY INDUSTRIES, LTD.) (http://h2a.mhi.co.jp/en/lineup/h2a/)

The payload fairing of H-IIA F36 is a single-launch type. H-IIA F35 for QZS-3 had a 5S-model fairing with a diameter of five meters, but H-IIA F36 for QZS-4 has a 4S-model fairing just like H-IIA F34 for QZS-2. QZS-3 is equipped with message communication antennas and has a depth exceeding four meters, which is why the larger 5S model fairing was adopted. At the time of launch, H-IIA F36 will have a total length of 53 meters.

(https://img.novosti-kosmonavtiki.ru/123307.jpg)

Interstage section (second-stage lower section) with the QZSS launch logo

Wanting to steadily put the QZS on its prescribed orbit

(https://img.novosti-kosmonavtiki.ru/123308.jpg)

Mr. Nimura, MHI

In front of H-IIA F36, Mr. Nimura enthusiastically said, "Our job is to transport customer's satellite to the required position. For this purpose, we sincerely would like to conduct the necessary operations firmly according to the designated procedure, in order to put QZS-4 into the required orbit."
Functional tests for these stages have been completed, and some preparations are underway to ship them via sea and land fr om Tobishima Plant to Japan Aerospace Exploration Agency's (JAXA) Tanegashima Space Center (TNSC), wh ere the launch site is located. The payload fairing has already been shipped to TNSC. SRB-As have already been fueled at the launch site and will be equipped to the first stage. The launch will be conducted from TNSC's Launch Pad 1 in October 2017.

ЦитироватьH-IIA Launch Vehicle No. 36

Спойлер

[/li]
• 
  (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/images/thumb_04.jpg) (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_04.html)
  Zoom (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_04.html)
  September 13-14, 2017
  Attached Solid Rocket Boosters (SRB-As) to H-IIA launch vehicle No.36
  
• 
  (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/images/thumb_03.jpg) (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_03.html)
  Zoom (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_03.html)
  September 10, 2017
  The second stage of H-IIA launch vehicle No.36 mating with the first stage.
  
• 
  (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/images/thumb_02.jpg) (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_02.html)
  Zoom (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_02.html)
  September 10, 2017
  H-IIA launch vehicle No.36, First stage VOS (Vehicle On Stand)
  
• 
  (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/images/thumb_01.jpg) (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_01.html)
  Zoom (http://h2a.mhi.co.jp/en/library/gallery/h2a_f36/index_01.html)
  September 8, 2017
  H-IIA launch vehicle No.36 arrived at Shimama port in Tanegashima island
  

[свернуть]

Цитировать (https://img.novosti-kosmonavtiki.ru/30217.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会えた！！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 9 ч. назад (https://twitter.com/mageshiman1025/status/914688731600248832)

10月9日夕刻のH-ⅡAF36機体移動時の天候はまぁまぁ。 #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash) 種子島宇宙センター週間気象情報 http://space.jaxa.jp/tnsc/tn-weather/data/weekly.gif ... (https://t.co/tQ5h2DkRr7)
(https://img.novosti-kosmonavtiki.ru/168583.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/185849.jpg) なりたまさひろ‏ @naritamasahiro (https://twitter.com/naritamasahiro) 2 ч. назад (https://twitter.com/naritamasahiro/status/915775371538087936)

わかんないや ! #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)
(https://img.novosti-kosmonavtiki.ru/168892.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/30217.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会えた！！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 6 ч. назад (https://twitter.com/mageshiman1025/status/916136776900657152)

9日夕方から10日午前中は回復傾向で晴れ間も出そう。 何もなければいいけれど・・・。 #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)
(https://img.novosti-kosmonavtiki.ru/168521.jpg)

Цитировать準天頂衛星「みちびき4号機」／H-IIAロケット36号機打ち上げ中継

(https://img.novosti-kosmonavtiki.ru/220311.jpg) (https://www.youtube.com/user/jaxachannel) JAXA | 宇宙航空研究開発機構 (https://www.youtube.com/channel/UCfMIdADo6FQayQCOkLYGhrQ)

Запланировано на 10 окт. 2017 г.

準天頂衛星「みちびき4号機」／H-IIAロケット36号機打ち上げライブ中継
The live broadcast of the MICHIBIKI No. 4/H-IIA F36 launch
Launch Date: Oct. 10, 2017（JST)
Launch Time: about 7:00 a.m.

youtube.com/watch?v=JCOtOVcvDMk (https://www.youtube.com/watch?v=JCOtOVcvDMk)

Цитировать (https://img.novosti-kosmonavtiki.ru/185849.jpg) なりたまさひろ‏ @naritamasahiro (https://twitter.com/naritamasahiro) 32 мин. назад (https://twitter.com/naritamasahiro/status/916485912799756288)

雲はありそうだけど、何とかなるっぽい ? #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)
(https://img.novosti-kosmonavtiki.ru/168582.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 3 ч. назад (https://twitter.com/nvslive/status/916891241521995776)

【三菱重工14時発表】H-2Aロケット36号機を10月10日7時1分37秒に打上げ予定 #nvslive (https://twitter.com/hashtag/nvslive?src=hash) #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash)

Цитировать (https://img.novosti-kosmonavtiki.ru/186183.jpg) 真之介0113‏ @shinnosuke0113 (https://twitter.com/shinnosuke0113) 5 ч. назад (https://twitter.com/shinnosuke0113/status/916850700876787712)

これは問題なさそうだ(https://img.novosti-kosmonavtiki.ru/125539.png) #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash)
(https://img.novosti-kosmonavtiki.ru/168651.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/185608.png) JAXAウェブ‏Подлинная учетная запись @JAXA_jp (https://twitter.com/JAXA_jp) 5 ч. назад (https://twitter.com/JAXA_jp/status/916849721326542848)

今朝、JAXA種子島宇宙センターからゾンデ放球が行われました。 「みちびき4号機」（準天頂衛星）を搭載したH-IIAロケット36号機は、打ち上げに向けて順調に準備が行われています。 10/10（火）は早起きして、ライブ中継を見よう！ https://www.youtube.com/watch?v=JCOtOVcvDMk ... (https://t.co/46IMfT2ieV)
(https://img.novosti-kosmonavtiki.ru/168649.jpg)

Спойлер

(https://img.novosti-kosmonavtiki.ru/168650.jpg)

[свернуть]

Цитировать

Launch Time of H-IIA Launch Vehicle No. 36
Encapsulating MICHIBIKI No. 4

October 8, 2017 (JST)

Mitsubishi Heavy Industries, Ltd.
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

Mitsubishi Heavy Industries, Ltd. and JAXA set the time of launch of H-IIA Launch Vehicle No. 36 (H-IIA F36) which encapsulates MICHIBIKI No. 4, Quasi-Zenith Satellite System. The details are as follows:

Launch Date :			October 10, 2017
Launch Time :			7:01:37 a.m. (JST)
Reserved Launch Period :			October 11 through November 30, 2017 (*)

(*) Launch time during the reserved launch period will vary.

ЦитироватьRJJJ

J6868/17 - REF AIP SUP 121/17 ITEM 1,2,3
ROCKET H-2A-F36 WILL BE LAUNCHED
LAUNCHING DATE/TIME : 2200 ON 09 OCT 2017. SFC - UNL, 05 OCT 07:04 2017 UNTIL
09 OCT 22:31 2017 ESTIMATED. CREATED: 05 OCT 07:05 2017
 

ЦитироватьKZAK

A4178/17 - THE JAPAN AEROSPACE EXPLORATION AGENCY (JAXA) HAS PLANNED A
ROCKET LAUNCH. DEBRIS FROM THIS LAUNCH WILL FALL WI AN AREA DEFINED
AS 2622N15400E TO 2806N15429E TO 2559N16201E TO 2415N16132E TO POINT
OF ORIGIN. IN THE INTEREST OF SAFETY ALL NON-PARTICIPATING AIR
TRAFFIC ARE ADVISED TO AVOID THE NOTAMED AREA.  IFR AIRCRAFT UNDER
ATC JURISDICTION SHOULD ANTICIPATE CLEARANCE AROUND THE NOTAMED
AREA. SFC - UNL, 10 OCT 22:00 2017 UNTIL 10 OCT 23:00 2017. CREATED: 05 OCT
16:32 2017
 

ЦитироватьHYDROPAC 3403/2017 (81,97)

WESTERN NORTH PACIFIC.
PHILIPPINE SEA.
JAPAN.
DNC 12.
1. HAZARDOUS OPERATIONS, ROCKET LAUNCHING:
   A. 092200Z TO 092214Z OCT IN AREA BOUND BY
   30-20-10N 132-43-16E, 30-26-10N 132-51-56E,
   30-20-00N 133-50-00E, 29-52-00N 133-47-00E,
   29-59-00N 132-41-00E.
   B. 092206Z TO 092231Z OCT IN AREA BOUND BY
   30-17-00N 137-44-00E, 29-57-44N 140-16-16E,
   29-52-12N 140-21-25E, 29-00-00N 140-15-00E,
   29-20-00N 137-37-00E.
   C. 092209Z TO 092236Z OCT IN AREA BOUND BY
   28-06-00N 154-29-00E, 25-59-00N 162-01-00E,
   24-15-00N 161-32-00E, 26-22-00N 154-00-00E.
2. CANCEL THIS MSG 092336Z OCT 17.

( 051321Z OCT 2017 )

Цитировать (https://img.novosti-kosmonavtiki.ru/31162.jpg) 柴田孔明‏ @koumeiShibata (https://twitter.com/koumeiShibata) 9 мин. назад (https://twitter.com/koumeiShibata/status/916948935867908096)

H-IIAロケット36号機の機体移動は明日(2017年10月9日)の17時頃です。天候が良ければ、まだ十分に明るいと思います。

ЦитироватьFinal QZSS Navigation Augmentation Constellation Member to Launch Monday Night on H-IIA
October 8, 2017 (http://spaceflight101.com/h-iia-qzs-4/qzs-4-h-iia-launch-preview/)

Japan's Quasi-Zenith Satellite System, designed to improve the availability & accuracy of satellite navigation over the island nation, will reach full strength on Monday when the fourth and last planned QZSS satellite takes flight atop an H-IIA rocket blasting off fr om the picturesque Tanegashima Space Center.

Michibiki-4 will complete the four-satellite constellation expected to deliver fully operational navigation augmentation starting next year with a future enhancement coming via the launch of additional satellites in the next decade.

Спойлер

(https://img.novosti-kosmonavtiki.ru/152903.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/bb623929a2c6157a413a7aec661a667f3.jpg)
File Photo of an H-IIA Rocket – Credit: JAXA

The 53-meter tall H-IIA rocket is targeting an instantaneous liftoff time at 22:01:37 UTC on Monday, 7:01 a.m. local time, thundering off fr om its sea-side launch pad to dispatch the 4,000-Kilogram QZS-4 satellite into a highly elliptical transfer orbit. After separating fr om the rocket, QZS-4 will take a precise position in a specialized orbit, operating in a three-shift pattern alongside two other QZSS craft with each at high elevation over the Japanese Islands eight hours per day.

(https://img.novosti-kosmonavtiki.ru/152914.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/qzssmelco.jpg)
Image: Mitsubishi Electric

2017 has been a busy year for Japan's QZSS program, aiming to have all satellites in orbit by the end of the year for final operational checkouts before declaring the system open for business in mid-2018. QZS-2 lifted off on June 1st and joined the first satellite in what is known as a Tundra orbit that offers optimized coverage over Japan.

QZS-1 has been in orbit since September 2010 to serve as the program's pathfinder mission, demonstrating the twofold navigation enhancement provided by the system. QZS-3, the heaviest in the group, took flight on August 19 and is the lone geostationary member of the constellation, hovering in a constant position in the sky to add a navigation beacon for the entire Asia-Pacific Region.

Monday's launch of the last member of the baseline constellation marks the culmination of 15 years of work. QZSS was initiated in 2002 with the overall objective of increasing the availability of GPS navigation services, particularly in Japan's urban canyons wh ere tall buildings block out the signals of all GPS satellites that are not particularly high in the sky, potentially causing interruptions in service if less than four satellites are visible.

(https://img.novosti-kosmonavtiki.ru/152913.jpg) (https://img.novosti-kosmonavtiki.ru/152913.jpg)
Increasing Coverage in Japan's Urban Canyons – Image: JAXA

To accomplish this, QZSS was initially designed as a three-satellite constellation that allows one satellite to be at very high elevation at any given time, essentially adding a GPS-compatible satellite to increase the odds of sufficient satellites being visible for users. QZS-3, as the GEO member of the constellation, was added later to deliver augmentation over the broader Asia-Pacific Region, aiding air traffic control, marine services and scientific applications.

The QZSS satellites deliver two types of signals – GPS-compatible navigation signals that can be processed by any GPS receiver as a standard member of the constellation, and GPS augmentation messages that require specialized receivers to more accurately calculate a user's position.

The GPS augmentation approach employed by QZSS is similar to that of the U.S. Wide Area Augmentation System, utilizing a number of ground stations to measure variability in GPS signals – caused by clock errors on the satellites or signal distortion in Earth's ionosphere. Correction messages are generated on the ground and immediately sent to the QZSS satellites which relay them in real-time for use by augmentation-enabled receivers to improve location accuracy to one meter or better.

>> QZSS Satellite & Constellation Overview (http://spaceflight101.com/spacecraft/qzss/)

(https://img.novosti-kosmonavtiki.ru/152908.jpg) (https://img.novosti-kosmonavtiki.ru/152908.jpg)
QZS-4 in Launch Configuration – Photo: QZSS Project

QZSS takes a unique spot in the satellite spectrum in that it is designed to augment another satellite constellation but moves beyond acting as a bent-pipe relay of ground-generated augmentation signals and in-fact delivers navigation signals of its own. The QZSS constellation will also be capable of augmentation for the European Galileo navigation constellation that will become operational before the end of the decade.

The QZS-1 satellite served as a critical demonstrator for the program, undergoing extensive signals characterization and testing after being lifted into orbit. Studies showed that GPS accuracy was improved by a factor of 2.5 through the augmentation code transmitted by the satellite. These results prompted JAXA to order three DS-2000-based satellites from Mitsubishi Electric in 2013 for a total of $526 million in order to establish the operational QZSS constellation for 24/7 augmentation services.

A carbon copy of QZS-2, the Michibiki-4 satellites stands 6.2 meters tall and weighs in at four metric tons, comprising a 1,180-Kilogram satellite platform, 370kg navigation payload and 2,450kg of maneuvering propellant. At the heart of the satellite sits a pair of redundant Rubidium Atomic Clocks that provide the ultra-stable timing needed in the generation of regular GPS navigation messages. Japan received clearance from the U.S. in 2006 to use the GPS navigation bands as well as the L1-SAIF augmentation signal architecture.

(https://img.novosti-kosmonavtiki.ru/152909.jpg) (https://img.novosti-kosmonavtiki.ru/152909.jpg)
H-IIA Assembly – Photo: MHI

Called up for the launch of QZS-4 will be Japan's trusted H-IIA rocket, making its fifth flight of the year and breaking its previous best mark for the number of missions in a calendar year. In the H-IIA 202 configuration used on Monday, the vehicle consists of a two-stage stack four meters in diameter plus a pair of SRB-A3 Solid Rocket Boosters to do most of the heavy-lifting in the first minute and a half of the flight. H-IIA 202 has a launch mass of 285 metric tons and can lift 4,100 Kilograms into a Geostationary Transfer Orbit.

H-IIA's lengthy launch countdown will begin with the vehicle's rollout to Launch Pad 1 around 8 UTC on Monday. Covering its first 500 meters toward orbit, H-IIA will be centered on the pad and connected to various commodity lines before undergoing power-up for an initial set of checkouts while teams close out the facility.

Propellant loading is expected to pick up seven hours and 45 minutes before launch to fill the two-stage rocket with 120 metric tons of -183°C Liquid Oxygen and -253°C Liquid Hydrogen. Once at flight level, the tanks will enter stable replenish for another pre-flight testing campaign that will set the stage for the automated countdown sequence.

>> H-IIA 202 Launch Vehicle Overview (http://spaceflight101.com/h-iia-qzs-4/live-h-iia-launch-coverage/)

Computers will be handed control of the count at X-4.5 minutes to take H-IIA through the final preparatory steps, notably the pressurization of its four tanks, the transition to internal power and the activation of the Flight Control System. H-IIA will begin breathing fire at X-5.2 seconds when the LE-7A engine will start its ignition sequence to soar to a thrust of nearly 100 metric ton force under close watch by the rocket's flight computers.

(https://img.novosti-kosmonavtiki.ru/152904.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/d2b84f0da2ca436bf35256bb8f184037.jpg)
QZS-2 takes flight – Photo: JAXA

Upon completion of engine monitoring, when clocks strike zero, H-IIA will fire up the twin boosters and leap off the pad with a total thrust of 600 metric-ton-force. H-IIA will climb vertically for only a handful of seconds before initiating its pitch and roll program to begin racing downrange across the Pacific Ocean.

Unlike a typical geostationary delivery that aims to reduce orbital inclination, H-IIA will be targeting a higher inclination than its launch site as the QZS constellation satellites operate in an orbit inclined 40 to 44 degrees to either side of the equator.

The SRB-A3 boosters feature a special configuration with a shorter burn time, but higher thrust – optimized for a high-energy mission profile. Each delivers some 255 metric-ton-force of thrust over the course of a 98-second burn to help accelerate H-IIA to a speed of 1.5 Kilometers per second. Separation of the boosters – triggered by their declining chamber pressures – will be commanded one minute and 48 seconds into the flight when the vehicle will be 54 Kilometers in altitude.

With the 15-meter boosters swinging outward along their thrust struts, H-IIA will from then on rely on its LE-7A engine alone, burning 260 Kilograms of cryogenics per second to deliver 109,300-Kilogram force of thrust when heading into the upper reaches of Earth's atmosphere. The protective payload fairing will split open and drop away four minutes and ten seconds into the flight when H-IIA crosses 151 Kilometers in altitude wh ere aerodynamic forces are no longer a danger to the delicate satellite structure.

Per the nominal mission plan, the first stage will shut down six minutes and 38 seconds into the flight, having boosted the vehicle to a speed of 5.2 Kilometers per second. Eight seconds later, the separation of the 37-meter long core stage will be commanded through loaded springs, expected some 239 Kilometers in altitude.

(https://img.novosti-kosmonavtiki.ru/152902.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/05/HIIA-F36-Ground-Track.jpg)
Image: JAXA/Spaceflight101

The second stage will fire up its LE-5B engine six seconds after staging, generating 13,970kgf of thrust for a burn of five minutes and 42 seconds to lift the stack into a preliminary parking orbit. At the conclusion of the first propulsive flight phase, H-IIA will enter a coast phase of exactly 12 minutes to continue on its south-easterly trek and set up the proper injection conditions for the second upper stage burn.

Re-start of the LE-5B is expected 24 minutes and 34 seconds into the mission on a burn of precisely three minutes, tasked with raising the vehicle's speed by 2.5 Kilometers per second. H-IIA is aiming for a Tundra Transfer Orbit of 250 by 36,140 Kilometers at an inclination of 31.9 degrees from wh ere it will be up to the satellite to maneuver into its operational slot between the first two QZS craft, flying in an orbit of 32,600 by 38,900 Kilometers with the high point over Japan. This orbital setup allows each satellite to dwell over the Japanese territory for a large part of its orbit.

Loaded springs will send QZS-4 on its way 28 minutes and 24 seconds after launch to check off H-IIA's 36th mission and also mark the completion of QZSS deployment after a fast-paced four months of activities.

[свернуть]

ЦитироватьOctober 09, 2017 13:32 JST
First Go/No Go Decision -'Go'

This is an updated launch countdown report on the "MICHIBIKI No. 4"(Quasi-Zenith Satellite System) , which will be launched using the H-IIA No. 36 Launch Vehicle (H-IIA F36). After the weather conditions checked out, the green light has been given for H-IIA F36 carrying "MICHIBIKI No. 4" to leave the Vehicle Assembly Building for the launch pad. The scheduled launch time is Oct. 10, 2017 7:01:37 a.m. JST.

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 36 мин. назад (https://twitter.com/nvslive/status/917283960023007232)

プレスルームにてH-2Aロケット３６号機の機体移動の開始が遅れる可能性がある旨のアナウンスが有りました。　#nvslive (https://twitter.com/hashtag/nvslive?src=hash) #h2af36 (https://twitter.com/hashtag/h2af36?src=hash)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 30 мин. назад (https://twitter.com/nvslive/status/917286019170418689)

H-2Aロケット３６号機の新しい機体移動時刻の発表は１７時以降になるとの連絡あり　#nvslive (https://twitter.com/hashtag/nvslive?src=hash)　#h2af36 (https://twitter.com/hashtag/h2af36?src=hash)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 29 мин. назад (https://twitter.com/nvslive/status/917286942722502657)

なお、遅れの原因は準備作業に時間が掛かっている為との説明が有りました。　#nvslive (https://twitter.com/hashtag/nvslive?src=hash) #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash)

Цитировать\ (https://img.novosti-kosmonavtiki.ru/30217.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会えた！！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 5 ч. назад (https://twitter.com/mageshiman1025/status/917225968585949184)

種子島宇宙センターの天気は問題なし！ #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash) http://space.jaxa.jp/tnsc/tn-weather/ ... (https://t.co/TQxcobKw7s)
(https://img.novosti-kosmonavtiki.ru/168760.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/30217.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会えた！！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 4 мин. назад (https://twitter.com/mageshiman1025/status/917296139585470464)

種子島周辺はほとんど雲なし。
(https://img.novosti-kosmonavtiki.ru/168781.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 2 мин. назад (https://twitter.com/nvslive/status/917301833613185024)

17:10時点でまだ移動の時間は決まっていないとの連絡 #nvslive (https://twitter.com/hashtag/nvslive?src=hash) #h2af36 (https://twitter.com/hashtag/h2af36?src=hash)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 3 мин. назад (https://twitter.com/nvslive/status/917307698194014209)

H-2Aロケット３６号機の機体移動は19時に決定との連絡　#nvslive (https://twitter.com/hashtag/nvslive?src=hash) #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 20 мин назад (https://twitter.com/nvslive/status/917311930372460544)

VAB大型ロケット組立棟の大扉が開きました　#nvslive (https://twitter.com/hashtag/nvslive?src=hash) #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash)
(https://img.novosti-kosmonavtiki.ru/168791.jpg)

Цитироватьﾏｹﾞｼﾏﾝ つば九郎に会えた！！ (https://twitter.com/mageshiman1025) ретвитнул(а)
 
 
  (https://img.novosti-kosmonavtiki.ru/186183.jpg) 真之介0113‏ @shinnosuke0113 (https://twitter.com/shinnosuke0113) 26 мин назад (https://twitter.com/shinnosuke0113/status/917311182322544640)

1745 より始まったVAB大扉開放 #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)
(https://img.novosti-kosmonavtiki.ru/168788.jpg)

Спойлер

(https://img.novosti-kosmonavtiki.ru/168789.jpg)
(https://img.novosti-kosmonavtiki.ru/168790.jpg)
(https://img.novosti-kosmonavtiki.ru/168787.jpg)

[свернуть]

Цитировать (https://img.novosti-kosmonavtiki.ru/30217.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会えた！！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 3 мин назад (https://twitter.com/mageshiman1025/status/917330117101207552)

機体移動開始。 #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)
(https://img.novosti-kosmonavtiki.ru/168806.jpg)

ЦитироватьOctober 09, 2017 19:00 JST
H-IIA F36 on the way to launch pad

H-IIA F36 carrying "MICHIBIKI No. 4" has left for the launch pad. H-IIA F36, mounted on the mobile launcher, will travel approximately 500 meters from the Vehicle Assembly Building to the launch pad. This will take about 30 minutes.

Цитировать (https://img.novosti-kosmonavtiki.ru/185421.jpg) Spaceflight101‏ @Spaceflight101 (https://twitter.com/Spaceflight101) 29 мин. назад (https://twitter.com/Spaceflight101/status/917330184658964480)

Two hours later than planned, Japan's #HIIA (https://twitter.com/hashtag/HIIA?src=hash) rocket is rolling out for launch with #QZS4 (https://twitter.com/hashtag/QZS4?src=hash) at 22:01 UTC today.

ЦитироватьOctober 09, 2017 19:31 JST
H-IIA F36 has arrived at launch pad

H-IIA F36 has arrived at the launch pad. The launch vehicle is going to be connected to the pad facilities.

Цитировать (https://img.novosti-kosmonavtiki.ru/30217.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会えた！！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 8 мин. назад (https://twitter.com/mageshiman1025/status/917338859964309504)

2時間遅れましたが、無事に機体移動終了したようです。 #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)
(https://img.novosti-kosmonavtiki.ru/168812.jpg)
(https://img.novosti-kosmonavtiki.ru/168813.jpg)

Цитировать

(http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_01s.jpg) (http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_01.jpg)
< Click image to enlarge >
Snapshot of launch site

Спойлер

(http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_02s.jpg) (http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_02.jpg)
< Click image to enlarge >
H-IIA F36 on the way to launch pad

(http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_03s.jpg) (http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_03.jpg)
< Click image to enlarge >
H-IIA F36 has arrived at launch pad

[свернуть]

Цитировать (https://img.novosti-kosmonavtiki.ru/186183.jpg) 真之介0113‏ @shinnosuke0113 (https://twitter.com/shinnosuke0113) 37 мин. назад (https://twitter.com/shinnosuke0113/status/917367209432801281)

お月様とH-2Aロケット36号機 #QZS4 (https://twitter.com/hashtag/QZS4?src=hash) #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash)
(https://img.novosti-kosmonavtiki.ru/168811.jpg)

ЦитироватьOctober 09, 2017 22:27 JST
Second Go/No Go Decision -'Go'

Final checks have been made for operational conditions of the launch vehicle, satellites, launch facilities, and tracking and control systems, as well as weather conditions. We now have gotten a go-ahead for loading the propellant, such as liquid oxygen and liquid hydrogen, into the launch vehicle. Propellant loading preparations are going to start.

ЦитироватьOctober 09, 2017 22:30 JST
Terminal countdown operation has started

Terminal countdown operation has started. Access will now be restricted within a radius of 400 meters from the launch pad.

ЦитироватьOctober 10, 2017 00:19 JST
Access restrictions to start within a radius of 3,000 meters from launch pad.

Access will now be restricted within a radius of 3,000 meters from the launch pad.

ЦитироватьOctober 10, 2017 01:07 JST
Attitude control system flight slew test completed

By running programs of the guidance and control system mounted on H-IIA F36, it has been confirmed that all devices for flight attitude control are working as expected.

ЦитироватьOctober 10, 2017 02:13 JST
First stage and second stage liquid oxygen and liquid hydrogen tanks fully loaded

It has been confirmed that the first- and second-stage liquid hydrogen and liquid oxygen tanks have been fully loaded.

ЦитироватьOctober 10, 2017 02:26 JST
Radio frequency system checked up

The radio frequency system between H-IIA F36 and the ground stations has been checked up.

Цитировать (https://img.novosti-kosmonavtiki.ru/186040.jpg) Chris B - NSF‏ @NASASpaceflight (https://twitter.com/NASASpaceflight) 1 ч. назад (https://twitter.com/NASASpaceflight/status/917461567561719808)

ARTICLE: Japan's H-2A rocket tasked with QZSS-4 (QZS-4) launch - https://www.nasaspaceflight.com/2017/10/japans-h-2a-rocket-qzss-4-launch/ ... (https://t.co/9FBL5FbKSS) - by William Graham
(https://img.novosti-kosmonavtiki.ru/168845.jpg)

Спойлер

(https://img.novosti-kosmonavtiki.ru/168846.jpg)
(https://img.novosti-kosmonavtiki.ru/168847.jpg)

[свернуть]

Цитировать

Japan's H-2A rocket tasked with QZSS-4 launch (https://www.nasaspaceflight.com/2017/10/japans-h-2a-rocket-qzss-4-launch/)

ЦитироватьFinal QZSS Navigation Augmentation Constellation Member to Launch Monday Night on H-IIA
October 8, 2017 (http://spaceflight101.com/h-iia-qzs-4/qzs-4-h-iia-launch-preview/)

Japan's Quasi-Zenith Satellite System, designed to improve the availability & accuracy of satellite navigation over the island nation, will reach full strength on Monday when the fourth and last planned QZSS satellite takes flight atop an H-IIA rocket blasting off fr om the picturesque Tanegashima Space Center.

Michibiki-4 will complete the four-satellite constellation expected to deliver fully operational navigation augmentation starting next year with a future enhancement coming via the launch of additional satellites in the next decade.

Спойлер

(https://img.novosti-kosmonavtiki.ru/152903.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/bb623929a2c6157a413a7aec661a667f3.jpg)
File Photo of an H-IIA Rocket – Credit: JAXA

The 53-meter tall H-IIA rocket is targeting an instantaneous liftoff time at 22:01:37 UTC on Monday, 7:01 a.m. local time, thundering off fr om its sea-side launch pad to dispatch the 4,000-Kilogram QZS-4 satellite into a highly elliptical transfer orbit. After separating fr om the rocket, QZS-4 will take a precise position in a specialized orbit, operating in a three-shift pattern alongside two other QZSS craft with each at high elevation over the Japanese Islands eight hours per day.

(https://img.novosti-kosmonavtiki.ru/152914.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/qzssmelco.jpg)
Image: Mitsubishi Electric

2017 has been a busy year for Japan's QZSS program, aiming to have all satellites in orbit by the end of the year for final operational checkouts before declaring the system open for business in mid-2018. QZS-2 lifted off on June 1st and joined the first satellite in what is known as a Tundra orbit that offers optimized coverage over Japan.

QZS-1 has been in orbit since September 2010 to serve as the program's pathfinder mission, demonstrating the twofold navigation enhancement provided by the system. QZS-3, the heaviest in the group, took flight on August 19 and is the lone geostationary member of the constellation, hovering in a constant position in the sky to add a navigation beacon for the entire Asia-Pacific Region.

Monday's launch of the last member of the baseline constellation marks the culmination of 15 years of work. QZSS was initiated in 2002 with the overall objective of increasing the availability of GPS navigation services, particularly in Japan's urban canyons wh ere tall buildings block out the signals of all GPS satellites that are not particularly high in the sky, potentially causing interruptions in service if less than four satellites are visible.

(https://img.novosti-kosmonavtiki.ru/152913.jpg) (https://img.novosti-kosmonavtiki.ru/152913.jpg)
Increasing Coverage in Japan's Urban Canyons – Image: JAXA

To accomplish this, QZSS was initially designed as a three-satellite constellation that allows one satellite to be at very high elevation at any given time, essentially adding a GPS-compatible satellite to increase the odds of sufficient satellites being visible for users. QZS-3, as the GEO member of the constellation, was added later to deliver augmentation over the broader Asia-Pacific Region, aiding air traffic control, marine services and scientific applications.

The QZSS satellites deliver two types of signals – GPS-compatible navigation signals that can be processed by any GPS receiver as a standard member of the constellation, and GPS augmentation messages that require specialized receivers to more accurately calculate a user's position.

The GPS augmentation approach employed by QZSS is similar to that of the U.S. Wide Area Augmentation System, utilizing a number of ground stations to measure variability in GPS signals – caused by clock errors on the satellites or signal distortion in Earth's ionosphere. Correction messages are generated on the ground and immediately sent to the QZSS satellites which relay them in real-time for use by augmentation-enabled receivers to improve location accuracy to one meter or better.

>> QZSS Satellite & Constellation Overview (http://spaceflight101.com/spacecraft/qzss/)

(https://img.novosti-kosmonavtiki.ru/152908.jpg) (https://img.novosti-kosmonavtiki.ru/152908.jpg)
QZS-4 in Launch Configuration – Photo: QZSS Project

QZSS takes a unique spot in the satellite spectrum in that it is designed to augment another satellite constellation but moves beyond acting as a bent-pipe relay of ground-generated augmentation signals and in-fact delivers navigation signals of its own. The QZSS constellation will also be capable of augmentation for the European Galileo navigation constellation that will become operational before the end of the decade.

The QZS-1 satellite served as a critical demonstrator for the program, undergoing extensive signals characterization and testing after being lifted into orbit. Studies showed that GPS accuracy was improved by a factor of 2.5 through the augmentation code transmitted by the satellite. These results prompted JAXA to order three DS-2000-based satellites from Mitsubishi Electric in 2013 for a total of $526 million in order to establish the operational QZSS constellation for 24/7 augmentation services.

A carbon copy of QZS-2, the Michibiki-4 satellites stands 6.2 meters tall and weighs in at four metric tons, comprising a 1,180-Kilogram satellite platform, 370kg navigation payload and 2,450kg of maneuvering propellant. At the heart of the satellite sits a pair of redundant Rubidium Atomic Clocks that provide the ultra-stable timing needed in the generation of regular GPS navigation messages. Japan received clearance from the U.S. in 2006 to use the GPS navigation bands as well as the L1-SAIF augmentation signal architecture.

(https://img.novosti-kosmonavtiki.ru/152909.jpg) (https://img.novosti-kosmonavtiki.ru/152909.jpg)
H-IIA Assembly – Photo: MHI

Called up for the launch of QZS-4 will be Japan's trusted H-IIA rocket, making its fifth flight of the year and breaking its previous best mark for the number of missions in a calendar year. In the H-IIA 202 configuration used on Monday, the vehicle consists of a two-stage stack four meters in diameter plus a pair of SRB-A3 Solid Rocket Boosters to do most of the heavy-lifting in the first minute and a half of the flight. H-IIA 202 has a launch mass of 285 metric tons and can lift 4,100 Kilograms into a Geostationary Transfer Orbit.

H-IIA's lengthy launch countdown will begin with the vehicle's rollout to Launch Pad 1 around 8 UTC on Monday. Covering its first 500 meters toward orbit, H-IIA will be centered on the pad and connected to various commodity lines before undergoing power-up for an initial set of checkouts while teams close out the facility.

Propellant loading is expected to pick up seven hours and 45 minutes before launch to fill the two-stage rocket with 120 metric tons of -183°C Liquid Oxygen and -253°C Liquid Hydrogen. Once at flight level, the tanks will enter stable replenish for another pre-flight testing campaign that will set the stage for the automated countdown sequence.

>> H-IIA 202 Launch Vehicle Overview (http://spaceflight101.com/h-iia-qzs-4/live-h-iia-launch-coverage/)

Computers will be handed control of the count at X-4.5 minutes to take H-IIA through the final preparatory steps, notably the pressurization of its four tanks, the transition to internal power and the activation of the Flight Control System. H-IIA will begin breathing fire at X-5.2 seconds when the LE-7A engine will start its ignition sequence to soar to a thrust of nearly 100 metric ton force under close watch by the rocket's flight computers.

(https://img.novosti-kosmonavtiki.ru/152904.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/d2b84f0da2ca436bf35256bb8f184037.jpg)
QZS-2 takes flight – Photo: JAXA

Upon completion of engine monitoring, when clocks strike zero, H-IIA will fire up the twin boosters and leap off the pad with a total thrust of 600 metric-ton-force. H-IIA will climb vertically for only a handful of seconds before initiating its pitch and roll program to begin racing downrange across the Pacific Ocean.

Unlike a typical geostationary delivery that aims to reduce orbital inclination, H-IIA will be targeting a higher inclination than its launch site as the QZS constellation satellites operate in an orbit inclined 40 to 44 degrees to either side of the equator.

The SRB-A3 boosters feature a special configuration with a shorter burn time, but higher thrust – optimized for a high-energy mission profile. Each delivers some 255 metric-ton-force of thrust over the course of a 98-second burn to help accelerate H-IIA to a speed of 1.5 Kilometers per second. Separation of the boosters – triggered by their declining chamber pressures – will be commanded one minute and 48 seconds into the flight when the vehicle will be 54 Kilometers in altitude.

With the 15-meter boosters swinging outward along their thrust struts, H-IIA will from then on rely on its LE-7A engine alone, burning 260 Kilograms of cryogenics per second to deliver 109,300-Kilogram force of thrust when heading into the upper reaches of Earth's atmosphere. The protective payload fairing will split open and drop away four minutes and ten seconds into the flight when H-IIA crosses 151 Kilometers in altitude wh ere aerodynamic forces are no longer a danger to the delicate satellite structure.

Per the nominal mission plan, the first stage will shut down six minutes and 38 seconds into the flight, having boosted the vehicle to a speed of 5.2 Kilometers per second. Eight seconds later, the separation of the 37-meter long core stage will be commanded through loaded springs, expected some 239 Kilometers in altitude.

(https://img.novosti-kosmonavtiki.ru/152902.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/05/HIIA-F36-Ground-Track.jpg)
Image: JAXA/Spaceflight101

The second stage will fire up its LE-5B engine six seconds after staging, generating 13,970kgf of thrust for a burn of five minutes and 42 seconds to lift the stack into a preliminary parking orbit. At the conclusion of the first propulsive flight phase, H-IIA will enter a coast phase of exactly 12 minutes to continue on its south-easterly trek and set up the proper injection conditions for the second upper stage burn.

Re-start of the LE-5B is expected 24 minutes and 34 seconds into the mission on a burn of precisely three minutes, tasked with raising the vehicle's speed by 2.5 Kilometers per second. H-IIA is aiming for a Tundra Transfer Orbit of 250 by 36,140 Kilometers at an inclination of 31.9 degrees from wh ere it will be up to the satellite to maneuver into its operational slot between the first two QZS craft, flying in an orbit of 32,600 by 38,900 Kilometers with the high point over Japan. This orbital setup allows each satellite to dwell over the Japanese territory for a large part of its orbit.

Loaded springs will send QZS-4 on its way 28 minutes and 24 seconds after launch to check off H-IIA's 36th mission and also mark the completion of QZSS deployment after a fast-paced four months of activities.

[свернуть]

ЦитироватьOctober 10, 2017 04:53 JST
Attitude control system flight slew test completed

The second attitude control system flight slew test has been completed.

ЦитироватьOctober 10, 2017 05:55 JST
Third Go/No Go Decision

The green light has been given to the X-60 minutes terminal countdown operation.

ЦитироватьOctober 10, 2017 06:01 JST
X-60 minutes

It is 60 minutes before launch. The final countdown operation has started.

(http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_31s.jpg) (http://h2a.mhi.co.jp/mission/countdown/images/f36/f36_cd_31.jpg)
< Click image to enlarge >
H-IIA F36 - Final countdown operation has started

ЦитироватьOctober 10, 2017 06:31 JST
X-30 minutes

It is 30 minutes before launch.

Цитировать (https://img.novosti-kosmonavtiki.ru/30217.jpg) ﾏｹﾞｼﾏﾝ つば九郎に会えた！！‏ @mageshiman1025 (https://twitter.com/mageshiman1025) 12 мин. назад (https://twitter.com/mageshiman1025/status/917502037868265472)

見事な日の出(https://img.novosti-kosmonavtiki.ru/125288.png) 頭の中でタラッター タタラー タララー と某刑事ドラマのメロディが。
(https://img.novosti-kosmonavtiki.ru/168874.jpg)
(https://img.novosti-kosmonavtiki.ru/168873.jpg)

Цитировать10/10/2017 00:48

Minus-13 minutes. In the final minutes of the countdown, an automated sequencer will control the final crucial steps before launch.

Спойлер

The automatic sequence will begin at T-minus 4 minutes, 30 seconds and computers will pressurize the H-2A's propellant tanks for flight at about T-minus 4 minutes, 20 seconds.

At about T-minus 3 minutes, the launcher will transition to internal battery power and remove external power.

Water will be released onto the launch pad deck beginning at T-minus 73 seconds to help suppress sound and acoustics during the ignition and liftoff. The vehicle's pyrotechnic and ordnance systems will be armed at T-minus 30 seconds and the rocket's guidance system initializes at T-minus 18 seconds. Batteries controlling solid rocket booster ignition are activated at T-minus 15 seconds.

Sparklers underneath the rocket's main engine ignite at T-minus 11.7 seconds to burn off residual hydrogen that could be an explosive hazard at main engine start.

[свернуть]

Цитировать10/10/2017 00:50

Engineers are uploading the latest upper level wind data into the H-2A's flight computer. The rocket will use the information to compute a specific steering profile based on the real launch day weather conditions. 

Спойлер

At liftoff, the H-2A will be propelled upward from the launch pad on the power of a single hydrogen-burning LE-7A main engine and two solid rocket motors. The total liftoff thrust of the rocket is approximately 1.4 million force pounds.

The rocket will pitch east from Tanegashima, racing through the speed of sound in less than a minute and reaching an altitude of more than 30 miles in the first two minutes of flight.

After consuming their pre-packed solid propellant, the two strap-on boosters will jettison at about the two-minute point. The 13.1-foot diameter payload shroud will separate at T+plus 4 minutes, 10 seconds after the H-2A rocket ascends above the discernable traces of Earth's atmosphere.

First stage main engine cutoff, stage separation and ignition of the second stage's LE-5B engine will occur nearly seven minutes into the mission. The second stage will burn for nearly six minutes before shutting down at T+plus 12 minutes, 34 seconds.

After a 12-minute coast, the second stage will reignite for a 3-minute burn.

Deployment of the Michibiki 4 satellite is expected at T+plus 28 minutes, 24 seconds.

[свернуть]

Цитировать10/10/2017 00:52

Some statistics on today's launch:

[/li]
• 36th H-2A launch since 2001
• 49th H-2 family launch since 1994
• 22nd launch of the H-2A (202) configuration
• 5th launch from Tanegashima in 2017
• 65th space launch attempt worldwide in 2017
  

Цитировать (https://img.novosti-kosmonavtiki.ru/185376.jpg) Spaceflight101 LIVE‏ @S101_Live (https://twitter.com/S101_Live) 4 мин. назад (https://twitter.com/S101_Live/status/917507372767117323)

#HIIA (https://twitter.com/hashtag/HIIA?src=hash) will be in operation for 28.5 minutes to send #QZS4 (https://twitter.com/hashtag/QZS4?src=hash) into a highly elliptical transfer orbit. Flight Profile: http://bit.ly/2wGv2Ce  (https://t.co/JoCBaNNqyK)
(https://img.novosti-kosmonavtiki.ru/168878.jpg)

Цитировать10/10/2017 00:57

The automatic countdown sequence has started and the H-2A rocket's propellant tanks will soon be pressurized for flight.

ЦитироватьOctober 10, 2017 06:56 JST
Automatic countdown sequence to start

It is 4 minutes and 40 seconds before liftoff. The automatic countdown sequence has started.

Цитировать10/10/2017 00:58

The H-2A rocket has switched to internal power.

ЦитироватьOctober 10, 2017 07:01 JST
Liftoff

Mitsubishi Heavy Industries (MHI) has launched the H-IIA Launch Vehicle No. 36 carrying"MICHIBIKI No. 4" at 7:01:37 on Oct. 10, 2017 JST from the Tanegashima Space Center.

Цитировать10/10/2017 01:15

T+plus 13 minutes. The second stage's LE-5B engine has cut off and the H-2A rocket has reached a parking orbit.

A second burn of the second stage engine is scheduled to begin at T+plus 24 minutes, 34 seconds.

Цитировать (https://img.novosti-kosmonavtiki.ru/67530.jpg) Spaceflight Now‏ @SpaceflightNow (https://twitter.com/SpaceflightNow) 14 мин. назад (https://twitter.com/SpaceflightNow/status/917510746828951552)

Liftoff of Japan's H-2A rocket with the Michibiki 4 satellite to improve navigation coverage over East Asia. https://spaceflightnow.com/2017/10/09/h-2a-f36-mission-status-center/ ... (https://t.co/C0LZVM31fJ)
(https://img.novosti-kosmonavtiki.ru/168880.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/186040.jpg) Chris B - NSF‏ @NASASpaceflight (https://twitter.com/NASASpaceflight) 32 сек. назад (https://twitter.com/NASASpaceflight/status/917514645384069120)

SpaceX vs JAXA Coast Phase graphics.
(https://img.novosti-kosmonavtiki.ru/168883.jpg)
(https://img.novosti-kosmonavtiki.ru/168885.jpg)

Цитироватьtnt22 пишет:
Оба запуска в одинь день...

ЦитироватьChris B - NSF ‏ @ NASASpaceflight 32 сек. назад (https://twitter.com/NASASpaceflight/status/917514645384069120)

SpaceX vs JAXA Coast Phase graphics.
 
 

ЦитироватьOctober 10, 2017 07:30 JST
Separation of "MICHIBIKI No. 4" confirmed

The separation of "MICHIBIKI No. 4" has been confirmed.

Цитировать (https://img.novosti-kosmonavtiki.ru/185376.jpg) Spaceflight101 LIVE‏ @S101_Live (https://twitter.com/S101_Live) 10 мин. назад (https://twitter.com/S101_Live/status/917517595036803072)

SEPARATION! #QZS4 (https://twitter.com/hashtag/QZS4?src=hash) has arrived in orbit, set to bring the QZSS navigation augmentation system to full strength! http://bit.ly/2qwN371  (https://t.co/poJdYdvnQw)
(https://img.novosti-kosmonavtiki.ru/168886.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/186040.jpg) Chris B - NSF‏ @NASASpaceflight (https://twitter.com/NASASpaceflight) 11 мин. назад (https://twitter.com/NASASpaceflight/status/917517605254172672)

S/C Sep for QZS(S)-4! ARTICLE: https://www.nasaspaceflight.com/2017/10/japans-h-2a-rocket-qzss-4-launch/ ... (https://t.co/9FBL5FbKSS) COVERAGE: https://forum.nasaspaceflight.com/index.php?topic=39432.0 ... (https://t.co/xtxkq74qSQ)
(https://img.novosti-kosmonavtiki.ru/168887.jpg)

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Japan's H-2A conducts QZSS-4 launch (https://www.nasaspaceflight.com/2017/10/japans-h-2a-rocket-qzss-4-launch/)

ЦитироватьУв. Lesobaza (http://novosti-kosmonavtiki.ru/forum/user/13447/) пишет:
Итого - три!!

ЦитироватьH-IIAロケット36号機の機体移動

(https://img.novosti-kosmonavtiki.ru/220311.jpg) (https://www.youtube.com/user/jaxachannel) JAXA | 宇宙航空研究開発機構 (https://www.youtube.com/channel/UCfMIdADo6FQayQCOkLYGhrQ)

Опубликовано: 9 окт. 2017 г.

Цитировать20171010 みちびき4号機打ち上げ (H2Aロケット 36号機) H-2A Launching Michibiki 4

(https://img.novosti-kosmonavtiki.ru/220642.jpg) (https://www.youtube.com/channel/UC_6ZTZ7J0zyxzLLOAEMcloQ) FUJIYAMA (https://www.youtube.com/channel/UC_6ZTZ7J0zyxzLLOAEMcloQ)

Опубликовано: 9 окт. 2017 г.

ЦитироватьH-IIA F36 launches QZS-4 (Michibiki 4/準天頂衛星 みちびき4号機)

(https://img.novosti-kosmonavtiki.ru/220782.jpg) (https://www.youtube.com/user/SciNewsRo) SciNews (https://www.youtube.com/channel/UCjU6ZwoTQtKWfz1urL7XcbA)

Опубликовано: 9 окт. 2017 г.

Цитировать準天頂衛星「みちびき4号機」／H-IIAロケット36号機打ち上げ中継

(https://img.novosti-kosmonavtiki.ru/220311.jpg) (https://www.youtube.com/user/jaxachannel) JAXA | 宇宙航空研究開発機構 (https://www.youtube.com/channel/UCfMIdADo6FQayQCOkLYGhrQ)

Цитировать (https://img.novosti-kosmonavtiki.ru/186183.jpg) 真之介0113‏ @shinnosuke0113 (https://twitter.com/shinnosuke0113) 59 мин. назад (https://twitter.com/shinnosuke0113/status/917513842317443073)

H-2Aロケット36号機打ち上げ 600mmver #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)
(https://img.novosti-kosmonavtiki.ru/168881.jpg)

Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 9 мин. назад (https://twitter.com/nvslive/status/917531558969466880)

H-2Aロケット36号機の打ち上げ後会見はこのあと８：４０～を予定

Цитировать

Successful Launch, H-IIA Launch Vehicle No. 36 Encapsulating MICHIBIKI No. 4

October 10, 2017 (JST)

Mitsubishi Heavy Industries, Ltd.
National Research and Development Agency
Japan Aerospace Exploration Agency (JAXA)

Mitsubishi Heavy Industries, Ltd. and JAXA successfully launched H-IIA Launch Vehicle No. 36 (H-IIA・F36) which encapsulates MICHIBIKI No. 4, Quasi-Zenith Satellite System; at 7:01:37a.m., 2017 (JST) from the JAXA Tanegashima Space Center.
The launch and flight of H-IIA Launch Vehicle No. 36 proceeded as planned. So did the separation of MICHIBIKI No. 4, which was confirmed at approximately 28 minutes and 20 seconds after liftoff.
We express sincere appreciation for all.

ЦитироватьFinal Building Block for Japanese Navigation Constellation Arrives in Orbit
October 9, 2017 (http://spaceflight101.com/h-iia-qzs-4/final-building-block-for-japanese-navigation-constellation-arrives-in-orbit/)

Japan's H-IIA rocket blasted off from Tanegashima Island Tuesday morning with the final building block in the country's regional navigation system, designed to improve GPS navigation services in the street canyons of the island nation's largest cities and deliver enhanced navigation accuracy to aid air traffic control.

Спойлер

(https://img.novosti-kosmonavtiki.ru/152905.jpg) (https://twitter.com/naritamasahiro/status/917511056011825152)
Photo: @naritamasahiro / Twitter (https://twitter.com/naritamasahiro/status/917511056011825152)

The 53-meter tall H-IIA raced off into the morning skies at 7:01:37 a.m. local time, 22:01 UTC on Monday, heading out over the Pacific Ocean to deploy the fourth satellite in the Quasi-Zenith Satellite System, set to reach its fully operational capabilities by the middle of 2018 for 24/7 navigation augmentation over the Japanese Islands, also providing an additional navigation beacon to the broader Asia-Pacific Region.

The ascending rocket dropped its two Solid Rocket Boosters under two minutes after launch and the cryogenic core stage continued firing until the six-and-a-half-minute mark when the second stage took over for a pair of firings, first to enter a preliminary orbit and again to boost the 4,000-Kilogram QZS-4 satellite into a highly elliptical transfer orbit. Over the coming days, the satellite will maneuver into a slot between the first two constellation satellites to mark the beginning of final commissioning work to bring the system to full capacity.

(https://img.novosti-kosmonavtiki.ru/152915.jpg) (https://img.novosti-kosmonavtiki.ru/152915.jpg)
Image: Mitsubishi Electric

H-IIA made its 36th overall flight Tuesday morning and flew for the fifth time this year – marking a new record for the vehicle as the previous best was four launches in 2006 and 2014.

Japan's Quasi Zenith Satellite System (QZSS) represents a single spacecraft in Geostationary Orbit, remaining locked in the same position of the sky, and a trio of satellites in a specialized elliptical orbit that allows each to dwell at high elevation over Japan for eight hours per day – providing an additional reference point for GPS receivers installed in cars, phones and other consumer devices that may otherwise not find a sufficient number of satellites overhead when navigating the urban canyons of Japan's large cities as tall buildings block out or scatter signals  from satellites that are lower in the sky.

GPS currently operates thirty active satellites in six orbital planes some 20,200 Kilometers in altitude, each transmitting broadcast signals from which ground receivers can triangulate their position. At least four satellites have to be in view for a receiver to calculate its position with three used for triangulation and the fourth for time synchronization. Through the addition of at least one QZSS satellite at high elevation, the odds increase for a sufficient number of GPS-transmitters being visible for users, even between high-rise buildings.

(https://img.novosti-kosmonavtiki.ru/152913.jpg) (https://img.novosti-kosmonavtiki.ru/152913.jpg)
Increasing Coverage in Japan's Urban Canyons – Image: JAXA

QZSS takes a unique spot in the world's navigation satellite systems as an augmentation architecture for a foreign constellation. Augmentation services are provided in a twofold manner: a) by sending GPS-compatible navigation signals in the L1, L2 and L5 bands to increase GPS availability and b) by relaying L1S and L5S augmentation signals generated on the ground to allow equipped receivers to factor signal corrections into their position calculations to yield a more precise result.

QZSS as a project was initiated in 2002, starting out under the auspices of an industry consortium which eventually dissolved and handed the project off to JAXA for further development work. The U.S. provided clearance in 2006 for QZSS to use the GPS navigation bands, a major prerequisite to the launch of the first QZS pathfinder satellite in 2010 on a proof-of-concept mission.

By 2011, the Michibiki-1 satellite had been declared healthy and began transmitting signals for extensive calibration and characterization, showing that GPS accuracy with augmentation messages from the satellite increased by a factor of 2.5. The promising results delivered by QZS-1 paved the way for the deployment of an operational QZSS constellation and JAXA ordered three satellites from Mitsubishi Electric in 2014 under a $526 million contract.

>> QZSS Satellite & Constellation Overview (http://spaceflight101.com/spacecraft/qzss/)

(https://img.novosti-kosmonavtiki.ru/152912.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/qzss10.jpg)
3 QZSS Constellation at 120-degree spacing for 24/7 Coverage – Image: JAXA

Initially baselined as a three-satellite constellation operating in elliptical 24-hour orbits to serve the Japanese islands, the system was expanded through the addition of a single Geostationary Satellite that could transmit augmentation messages to the entire Asia-Pacific Region.

With the path cleared for QZSS operational services, JAXA lined up a rapid fire campaign to get all three satellites into orbit within a four-and-a-half-month period in 2017. QZS-2 lifted off on June 1st and joined the Michibiki-1 satellite in what is known as Tundra orbit while QZS-3, the heaviest member of the group tipping the scales at 4,800kg, launched on August 19 and since entered Geostationary Orbit. QZS-4, an identical copy of QZS-2, will phase into the slot between the 1 and 2 satellites to have at least one satellite at elevation angles of 60 degrees or higher, as seen from the Japanese territory.

(https://img.novosti-kosmonavtiki.ru/152908.jpg) (https://img.novosti-kosmonavtiki.ru/152908.jpg)
QZS-4 in Launch Configuration – Photo: QZSS Project

Based on the flight-proven DS-2000 satellite platform, QZS-4 stands 6.2 meters tall and has a launch mass of 4,000 Kilograms, including 370kg for the navigation payload. At the heart of the navigation package sits a pair of redundant Rubidium Atomic Clocks that provide the ultra-stable timing needed for the generation of the navigation signal that is transmitted via an L-Band antenna.

While the navigation signals are generated on board the satellite using the precise clocks as reference, augmentation messages are assembled on the ground by monitoring GPS signal variability through an array of ground stations across Japan and surrounding regions which detect GPS clock errors and other factors like signal delay caused by changes in Earth's ionosphere. Correction data for these varying factors is uplinked to the QZS satellite which immediately re-transmits it to any enabled receiver in its footprint to then apply the corrections to its navigation solution to yield a more accurate location, on average with one-meter accuracy.

QZSS delivers the L1-SAIF (Sub-meter class Augmentation with Integrity Function) that is compatible with the U.S. Wide Area Augmentation System, plus an L1-SAIF+ signal that allows receivers to acquire GPS position lock faster and provides space for messages for disaster relief. Additionally, an experimental signal designated L-EX is compatible with the European Galileo satellite constellation coming on line by the end of the decade.

An expansion of QZSS to seven satellites is planned in the 2020s to add three craft to the elliptical orbit constellation segment so that two satellites dwell at high angles over Japan at any given time.

(https://img.novosti-kosmonavtiki.ru/152906.jpg) (https://img.novosti-kosmonavtiki.ru/152906.jpg)
Photo: Mitsubishi Heavy Industries

H-IIA, gearing up for its 36th launch since debuting in 2001, rolled to Launch Pad 1 at the sea-side launch complex at 10 UTC on Monday, two hours later than planned after an umbilical on the rocket had to be re-tensioned. Standing 53 meters tall, the H-IIA 202 launch vehicle comprises a two stage stack measuring four meters in diameter and a pair of SRB-A3 Solid Rocket Boosters attached to the first stage. Weighing 285 metric tons at launch, H-IIA 202 can lift 4,100 Kilograms into Geostationary Transfer Orbit.

>> H-IIA 202 Overview (http://spaceflight101.com/spacerockets/h-iia-202/)

The two-hour delay to the rollout was made up through on-pad schedule margin and H-IIA entered its Terminal Countdown Operation at 13:30 UTC with launch vehicle activation and checkouts. Over the course of a three-hour sequence, the two-stage launch vehicle was loaded with 120 metric tons of -183°C Liquid Oxygen and Liquid Hydrogen, stored at -253°C. Confirmation that both stages had reached flight level was provided at 17:13 UTC and tanks were kept topped up for the remainder of the countdown.

Final testing wrapped up as the sun came up over Tanegashima less than one hour before the instantaneous launch opportunity. As the countdown switched to auto-mode at X-4.5 minutes, H-IIA pressurized its propellant tanks, transferred to internal power and switched to onboard control before activating thermal batteries and completing a final thrust vector control check on the boosters to clear the way for ignition.

H-IIA fired up its LE-7A main engine at X-5.2 seconds, soaring to a liftoff thrust of 86 metric ton-force under close watch by computers before the point of no return – ignition of the twin boosters when clocks its zero, catapulting the vehicle skyward with a total thrust of 596 metric tons.

(https://img.novosti-kosmonavtiki.ru/152910.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/qzs4launch1.jpg)
Photo: MHI/JAXA Webcast

H-IIA balanced in a vertical orientation for only a few seconds before its engine and boosters gimbaled to place the vehicle onto a south-easterly departure path across the Pacific Ocean, burning 1,600 Kilograms of propellant each second of powered flight.

The familiar scream of the H-II family was audible as the vehicle made its early morning departure, passing Mach 1 less than a minute into the flight and encountering Maximum Dynamic Pressure shortly thereafter with the boosters entering a 'bucket' in their thrust profile to reduce stress on the climbing rocket.

The SRB-A3 boosters did most of the heavy-lifting in the early portion of the flight, each burning through 66 metric tons of propellants to generate 255 metric ton-force of thrust over a 98-second burn. Optimized for high-energy missions by providing higher thrust over a shorter burn, the 15-meter long boosters helped accelerate H-IIA to 1.5 Kilometers per second and dropped away one minute and 48 seconds after launch, using their thrust struts to ensure a clean separation.

(https://img.novosti-kosmonavtiki.ru/152907.jpg) (https://img.novosti-kosmonavtiki.ru/152907.jpg)
Photo: MHI

Jettisoning the boosters 54 Kilometers in altitude, H-IIA headed on toward space powered by the LE-7A alone, burning 260 Kilograms of propellant per second to generate a vacuum thrust of 109,000 Kilogram-force. Four minutes and ten seconds into the flight, H-IIA crossed 151 Kilometers in altitude and separated its protective payload fairing to shed no-longer-needed weight on its way into orbit.

The rocket's first stage boosted the vehicle's speed to 5.2 Kilometers per second, shutting down its engine six minutes and 38 seconds after liftoff. Springs pushed the 37-meter long first stage clear of the upper stage six seconds after main engine cutoff as it handed powered flight duties over to Stage 2 for a pair of engine burns to lift QZS-4 into its desired transfer orbit.

The 14,000-Kilogram-force LE-5B engine started up just shy of seven minutes into the launch, tasked with accelerating the vehicle to orbital velocity to reach an initial Low Earth Parking Orbit. The five-minute and 37-second LE-5B burn was by the book with shutdown occurring 290 Kilometers over the Pacific Ocean, marking the start of a 12-minute coast phase.

Instead of a mission to Geostationary Transfer Orbit that aims to minimize inclination, H-IIA was actively working to increase orbital inclination, targeting a highly elliptical orbit of 250 by 36,140 Kilometers, inclined 31.9 degrees.

Re-start of the second stage was confirmed at X+24.5 minutes on a burn of exactly three minutes to raise the vehicle's speed by 2.5 Kilometers per second and accomplish the high-energy injection required by Michibiki-4. Altitude and velocity closely matched the pre-launch prediction at SECO-2, indicating H-IIA had hit its orbital cutoff target with precision.

(https://img.novosti-kosmonavtiki.ru/152911.jpg) (http://spaceflight101.com/h-iia-qzs-4/wp-content/uploads/sites/187/2017/10/qzs4launch2.jpg)
Michibiki-4 Separation – Image: MHI/JAXA Webcast

QZS-4 was sent on its way via spring-loaded separation fifty seconds after engine shutdown, embarking on a 15-year mission dedicated to delivering reliable and accurate navigation to users in Japan's canyon-like city streets and aviators across the Asia-Pacific Region. Its mission will begin with a series of firings of the R-4D main engine to spiral the spacecraft up into the specialized Geosynchronous Orbit of the QZS constellation that describes a Figure 8 with its ground track and dwells over the Japanese Islands with a high point of 38,900 Kilometers.

Checking off its fifth orbital delivery of the year, H-IIA can look back at three flights in support of QZSS, the deployment of a classified Information Gathering Satellite and the launch of the DSN-2 military communications satellite. Japan's next orbital launch was expected in November when an Epsilon rocket was to launch with the ASNARO-2 satellite; however, this mission has been delayed due to an electrical problem on the rocket. H-IIA will next see action with the launch of the GCOM-C climate satellite, a mission that has yet to receive a launch date.

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Цитироватьなりたまさひろ‏ @naritamasahiro (https://twitter.com/naritamasahiro)  7m (https://twitter.com/naritamasahiro/status/917681907923533824)

22mm相当の広角で撮ったロケットロード。予想以上に印象的な画になりました #H2AF36 (https://twitter.com/hashtag/H2AF36?src=hash) #QZS4 (https://twitter.com/hashtag/QZS4?src=hash)

ЦитироватьSuccessful H-2A rocket launch rounds out Japanese navigation network
October 9, 2017 (https://spaceflightnow.com/2017/10/) Stephen Clark (https://spaceflightnow.com/author/stephen-clark/)

(https://img.novosti-kosmonavtiki.ru/126968.jpg)
Credit: JAXA

Japan's regional satellite navigation network, conceived to improve GPS coverage over Japanese territory, received its fourth member Monday with an on-target H-2A rocket launch.

Спойлер

The addition of the Michibiki 4 satellite puts Japan's Quasi-Zenith Satellite System on course to begin full operational service early next year, coming after the launch of the network's first pathfinder spacecraft in 2010 and two more platforms in June and August of this year.

The 174-foot-tall (53-meter) H-2A rocket ignited its LE-7A main engine and two solid rocket boosters to fire away fr om the Tanegashima Space Center in southwestern Japan at 2201:37 GMT (6:01:37 p.m. EDT) Monday.

Liftoff occurred at 7:01 a.m. Tuesday in Japan, shortly after sunrise at the picturesque spaceport carved on the southern flank of Tanegashima Island on a rocky overlook on the Pacific Ocean.

The launcher headed southeast, soaring through scattered clouds painted in the orange hue of sunrise. The H-2A's twin solid rocket boosters burned out and separated around two minutes after liftoff, and the rocket's hydrogen-fueled main engine continued driving the vehicle higher over the Pacific.

The first stage shut down and jettisoned around six-and-a-half minutes into the flight to fall into the sea, and an upper stage LE-5B engine fired two times to maneuver the Michibiki 4 satellite into an elliptical, egg-shaped transfer 31.7-degree inclination orbit ranging fr om about 200 miles (300 kilometers) to more than 22,000 miles (35,000 kilometers) above Earth.

A commentator on a live webcast of the launch provided by the Japan Aerospace Exploration Agency announced separation of the Michibiki 4 satellite around 28 minutes after liftoff, wrapping up the 36th flight of Japan's workhorse H-2A rocket.

"The launch and flight of H-2A Launch Vehicle No. 36 proceeded as planned," JAXA said in a statement. "So did the separation of Michibiki No. 4, which was confirmed at approximately 28 minutes and 20 seconds after liftoff."

The satellite weighed about 4 metric tons, or approximately 8,800 pounds, at the time of launch. It was built by Mitsubishi Electric Corp. in Japan.

Michibiki 4 is the fourth satellite designed for Japan's Quasi-Zenith Satellite System, which aims to improve navigation accuracy in Japan, especially in urban areas and rough terrain wh ere skyscrapers and terrain block GPS signals.

Michibiki is a nickname for the quasi-zenith satellites, meaning "guiding" or "showing the way" in Japanese.

The satellite is designed for a 15-year service life in an orbit inclined approximately 41 degrees to the equator.

Japan's Cabinet Office, the government agency in charge of the navigation program, says the quasi-zenith satellites are entirely compatible with the GPS network. Each spacecraft will broadcast four L-band navigation signals.

(https://img.novosti-kosmonavtiki.ru/126967.jpg)
The Michibiki 4 navigation satellite pictured before launch. Credit: Japanese Cabinet Office

The first two Michibiki spacecraft went into inclined geosynchronous-type orbits that oscillate between the northern and southern hemispheres, while Michibiki 3 launched into a geostationary orbit that hovers over the equator.

Michibiki 4 is roughly identical to the Michibiki 2 satellite launched in June.

The spacecraft's on-board thruster will raise its orbit into a near-circular inclined geosynchronous perch ranging in altitude between 24,000 miles (38,500 kilometers) over the northern hemisphere and 20,500 miles (33,100 kilometers) over the southern hemisphere.

The orbit will allow Michibiki 4 to complete one lap around Earth in nearly 24 hours, maintaining its position in the sky over the Asia-Pacific. Projected against Earth's surface, Michibiki 4's ground track will chart an asymmetric figure-eight pattern stretching from Japan to Australia as it alternates north and south of the equator.

GPS satellites, operated by the U.S. Air Force, circle Earth in lower orbits, meaning different spacecraft are visible in the sky at different times, acting as navigation beacons to triangulate the location of ground users.

Japan's Quasi-Zenith Satellite System will add more beacons to the sky over the Asia-Pacific, resulting in more precise position estimates and improved service in urban areas and remote regions, wh ere high-rise buildings and mountains can obstruct signals from GPS satellites low on the horizon.

The QZSS network will allow users in Japan to determine their position with unparalleled centimeter-level precision via satellite, according to Japan's Cabinet Office.

The four-satellite system should be operational as soon as April 2018, and the Japanese government plans to add three more satellites to upgrade the fleet in the 2020s.

Japan is not the only country working on a regional satellite navigation system. India has launched seven satellites to augment GPS signals over its own territory.

Other navigation projects strive to field an independent global navigation service. The Russian military's Glonass fleet is an analog to the U.S. Air Force's GPS network, currently providing near-global reach. China and the European Union are also developing their own worldwide navigation fleets.

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ЦитироватьЯпония запустила новый спутник для создания собственной системы GPS
ТОКИО, 10 окт — РИА Новости. Япония запустила во вторник свой четвертый спутник для создания собственной системы GPS высокой точности "Митибики-4" с космодрома Танэгасима, расположенного в префектуре Кагосима на юго-западе страны.
Старт ракеты-носителя H2A-F36 напрямую транслировался в режиме онлайн в интернете.
Предыдущий спутник этой серии был запущен 19 августа, чтобы стать составной частью системы позиционирования QZSS (Quazi Zenith Satellite System) по типу GPS.
Если работа четвертого спутника будет успешной, с 2018 года Япония начнет пользоваться своей системой позиционирования в дополнение к американской GPS, а с 2023 года правительство рассчитывает начать эксплуатацию своей собственной системы, состоящей из семи спутников, уже не опираясь на американскую GPS.

Спойлер

Квазизенитная спутниковая система QZSS, состоящая из трех спутников, передвигающихся по геосинхронной высокоэллиптической орбите "Тундра", и одного спутника на геостационарной орбите, позволит обеспечить бесперебойный прием GPS-сигналов и, таким образом, повысить надежность и точность трехмерной спутниковой навигации до 99,8%.
Точность системы позволит снизить погрешность при определении местоположения до нескольких сантиметров. Погрешность современных систем составляет около 10 метров.
Кроме системы позиционирования, в рамках QZSS планируется также создание новой спутниковой системы измерения времени, которая не требовала бы использования атомных часов на борту, таких как в спутниках ГЛОНАСС и GPS.
Разработка системы позиционирования QZSS началась около 15 лет назад. В 2010 году в Японии был осуществлен запуск ракеты-носителя с первым спутником "Митибики". Запуск второго спутника состоялся 1 июня 2017 года.
Хотя в Токио называют цели таких спутников навигационными, они вызывают опасение в КНДР. Ранее в Пхеньяне заявили, что на деле это спутники-шпионы, а навигация — только "предлог".
В КНДР утверждают, что Япония пытается оправдать "возрождение милитаризма" нападками на космическую программу Пхеньяна, который проводит ракетные испытания, несмотря на санкции СБ ООН.
В Северной Корее утверждают, что с 2003 года Япония "запустила уже множество шпионских спутников и постоянно ведет слежку" на северокорейской территории.

[свернуть]

Цитироватьche wi пишет:
 https://www.japantimes.co.jp/news/2017/10/10/national/science-health/japans-fourth-quasi-zenith-positioning-satellite-successfully-launches-orbit/

ЦитироватьТочность системы позволит снизить погрешность при определении местоположения до нескольких сантиметров. Погрешность современных систем составляет около 10 метров

Цитировать https://www.japantimes.co.jp/news/2017/10/10/national/science-health/japans-fourth-quasi-zenith-positioning-satellite-successfully-launches-orbit/#.Wd4E0Gi0M-U

Спойлер

ТANEGASHIMA, KAGOSHIMA PREF. – Japan successfully launched its fourth and final quasi-zenith satellite into orbit on Tuesday to help create a new system to improve the accuracy of GPS data for a range of applications, including smartphones and vehicle navigation systems.

Mitsubishi Heavy Industries Ltd. and the Japan Aerospace Exploration Agency (JAXA) launched an H-IIA rocket carrying the Michibiki No. 4 satellite fr om the Tanegashima Space Center in Kagoshima Prefecture at 7:01 a.m.

The government satellite was separated from the rocket about 28 minutes after liftoff and entered its target quasi-zenith orbit.

[свернуть]

The Michibiki satellite system complements GPS, helping reduce positioning errors in the U.S. system to around one meter. It is also designed to realize positioning accuracy of a few to scores of centimeters by using data received by electronic reference stations set up across Japan by the Geospatial Information Authority.

The Michibiki system helps reduce areas wh ere radio waves are difficult to reach, such as locations between tall buildings and in mountainous areas.

With the launch of the new satellite, radio waves from the Michibiki system can be received in Japan constantly.

The government plans to start supplying positioning data in fiscal 2018 using four Michibiki satellites — the No. 1, No. 2 and No. 4 quasi-zenith satellites moving almost directly above Japan and the No. 3 geostationary satellite.

Experiments have been conducted on such positioning data for introducing autonomous heavy machinery at construction sites and self-driving tractors on farmland.

Other applications include a tourism navigation system combining augmented reality technology with positioning data from Michibiki.

The government plans to operate seven positioning satellites in fiscal 2023, to make its Michibiki system fully independent from GPS.

"We're planning to conduct in November an experiment on a self-driving bus utilizing the Michibiki system on the main island of Okinawa," said Go Takizawa, executive director of the Quasi-Zenith Satellite System Strategy Office at the Cabinet Office's National Space Policy Secretariat.

Спойлер

The No. 1 satellite was launched in September 2010, the No. 2 in June this year and the No. 3 in August.

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Цитировать (https://img.novosti-kosmonavtiki.ru/30332.jpg) ネコビデオ ビジュアル ソリューションズ‏ @nvslive (https://twitter.com/nvslive) 13 окт. (https://twitter.com/nvslive/status/918866487741366277)

.@lizard_isana (https://twitter.com/lizard_isana) さんのGoogleSatTrackで、先日上がった　みちびき4号機の起動をみてみよう。　徐々に準天頂軌道へ調整中。　http://www.lizard-tail.com/isana/tracking/?catalog_number=42965,37158,42738,42917 ... (https://t.co/19UoTFIxzb)
(https://img.novosti-kosmonavtiki.ru/169065.jpg)