SpaceX

[triage]

Вообще-то для высокого разрешения нужна высокоскоростная связь на участке  Земля-Луна.... а не низкоорбитальная спутниковая группировка. Особенно интересно как эта группировка поможет когда корабль будет с другой стороны. Майл.ру шутит?

[Georgea]

pnetmon пишет:
Вообще-то для высокого разрешения нужна высокоскоростная связь на участке Земля-Луна.... а не низкоорбитальная спутниковая группировка. Особенно интересно как эта группировка поможет когда корабль будет с другой стороны. Майл.ру шутит?

Может, имеется в виду, что Маску гипотетически не потребуется сеть наземных станций для приема сигнала в любое время земных суток, так как сигнал может приниматься облаком спутников?

[triage]

Georgea пишет:
Может, имеется в виду, что Маску гипотетически не потребуется сеть наземных станций для приема сигнала в любое время земных суток, так как сигнал может приниматься облаком спутников?

а зачем такая переизбыточность по приему и передачи у спутников?

[кукушка]

https://hi-news.ru/space/spacex-dostavit-k-lune-neskolko-yaponskix-apparatov-v-2020-i-2021-godax.html
SpaceX доставит к Луне несколько японских аппаратов в 2020 и 2021 годах



Компания SpaceX заключила контракт с японским стартапом ispace на проведение двух миссий по доставке нескольких космический аппаратов к Луне в рамках программы HAKUTO-R. Запуски запланированы на 2020 и 2021 годы и будут проводиться с использованием ракеты-носителя Falcon 9. В ходе первого (в 2020 году) к нашему естественному спутнику SpaceX доставит орбитальный космический аппарат. В рамках второго (2021 года) - посадочный модуль с луноходами.

 Скрытый текст:

Компания ispace является одним из финалистов конкурса Google Lunar XPrize с главным призом в 30 миллионов долларов. Луноходы являются доработанной версией ровера HAKUTO, который компания представила в рамках этого конкурса. Посадочный модуль и орбитальный аппарат - совершенно новые разработки японского стартапа.

Напомним, что цель конкурса Google Lunar XPrize заключалась в разработке и отправке на Луну космического аппарата, способного преодолеть 500 метров по поверхности спутника Земли и прислать фотографии и видеозаписи спутника с высоким разрешением.

В январе 2018 года организаторы конкурса объявили, что ни одна из команд-участниц не успеет провести миссию до конца окончания конкурса, и он остался без победителей. Несмотря на досрочное завершение конкурса, некоторые финалисты продолжили разработку своих проектов и объявили о том, что продолжат подготовку к запускам своих аппаратов к Луне при поддержке сторонних инвесторов. Самой ispace удалось собрать на два запуска 95 миллиона долларов. Помимо ispace к Луне собирается, израильская компания SpaceIL, которая тоже подписала контракт с SpaceX на запуск их лунного посадочного модуля в декабре этого года. Другой бывший участник X Prize, компания Astrobotic планирует в середине 2020 года отправить посадочный аппарат Peregrine с помощью ракеты «Атлас-5» компании United Launch Alliance.

Орбитальный аппарат миссии HAKUTO-R компании ispace, который доставят к Луне в 2020 году




«Мы разделяем взгляды компании SpaceX в вопросе жизни человека в космосе и поэтому рады тому, что они присоединились к нам в нашем первом шаге нашего путешествия», -- прокомментировал в пресс-релизе компании ispace ее генеральный директор Такеши Хакамада.

Помимо миссий, запланированных на 2020 и 2021 годы ispace готовит семь миссий на 2022 год, во время которых она будет создавать транспортную платформу для перемещений между Землей и Луной и исследовать запасы воды в полярных областях Луны, однако ispace пока не раскрывает подробностей этих миссий.

 "Red Car on the Red Planet"  Художник - Peter DeLuce
[/IMG]

[Georgea]

pnetmon пишет:
а зачем такая переизбыточность по приему и передачи у спутников?

Спутники же нужны впервую очередь для земных дел. Но, может, их можно задействовать для приема сигнала от Луны. А количество только на пользу пойдет, уменьшит число искажений при приеме.

[triage]

Georgea пишет:

pnetmon пишет:
а зачем такая переизбыточность по приему и передачи у спутников?

Спутники же нужны впервую очередь для земных дел. Но, может, их можно задействовать для приема сигнала от Луны. А количество только на пользу пойдет, уменьшит число искажений при приеме.

Алле гараж! Зачем на спутники ставить избыточную аппаратуру, притом количество спутников очень велико, и стоимость такой избыточности выльется в большую сумму по сравнению со специализированными спутниками.
И как они помогут когда, а вопрос про упоротость автора в майл ру был именно про это

https://hi-news.ru/space/spacex-budet-translirovat-lunnuyu-missiyu-v-rezhime-virtualnoj-realnosti.html
Маск рассчитывает, что спутниковая система SpaceX Starlink будет готова к тому моменту, как миссия оторвется от Земли. Она помогли бы компании вещать происходящее в виртуальной реальности, особенно в те моменты, когда между космическим аппаратом SpaceX и Землей будет Луна.

[Apollo13]

https://www.reddit.com/r/spacex/comments/9kedv2/spacexmanager_k%C3%B6nigsmann_for_mars_im_too_old/e7057jd/

SPIEGEL Online: Up to now, you have earned a good part of your money fr om the US government. You are to bring astronauts into space for this customer, not only freight as previously. But you keep pushing these flights further back. What does NASA think of the fact that you are at the same time introducing lofty plans for the moon and Mars?

Königsmann: Crew transport is one of the top priorities for us. We are at a point wh ere the spacecraft is, in principal, finished. Now we have to work on the certification and the other formalities. I actually consider it to be very good to approach things more slowly at this point, and to do everything truly carefully, in order to be certain that nothing is forgotten. If the launch is then delayed one or two months, that is time well invested.

SPIEGEL Online: You have not yet performed any of the necessary qualification flights for transporting astronauts to the ISS.

Königsmann: You need two things, the spacecraft, and the paperwork. And that takes some time. For that reason we have not had a launch up to now. But soon we will be ready.

SPIEGEL Online: Who will actually make the first commercial manned flight to the space station, you -- or Boeing? And is it a race?

Königsmann: We'll see. We are working very hard to get there safely. I am responsible, in our firm, for the reliability of the flights, not for the time frame. You are also asking the wrong question, if you want to know whether or not this is a race. In my eyes, it is absolutely not one. It is a matter only of getting the astronauts safely into space and back again to the earth.

SPIEGEL Online: Your European competitor Arianespace has complained that SpaceX has demanded excessive prices from the US government -- and thereby been able to make offers to commercial customers too cheaply. What is your response?

Königsmann: That makes me laugh! Because it's not true. We list our prices on the website. The US government does require certain extra measures when they buy launches. With commercial launches we have less to do. But when for example we send a Dragon freight ship to the ISS for NASA, then we have to build the capsule, we have to supervise the mission for an entire month, and so on. And for other satellite launches, the government will demand yet other additional formalities and tests. All of that costs money, and for that we are paid. There are no subsidies.

SPIEGEL Online: The re-use of rocket parts is the central element of your strategy. At Arianespace, they say that this would not be worthwhile for the firm at this time. Can you go into that?

Königsmann: Re-usability is a giant change for the market. It makes complete sense to use something more than once. This makes rocket launches markedly less expensive than previously. If you don't recognize that, you should inspect your business model more closely.

SPIEGEL Online: Do you have customers who insist on always getting new rockets -- none that have already flown?

Königsmann: We did have customers who wanted new rockets. But they are fewer and fewer. Every time we recover a rocket after a flight, we learn. And we show that to our customers. And we convinced one particularly important customer: NASA uses flown rockets and Dragon capsules for resupply flights to the international space station. That is for one simple reason: They are sure that they are reliable and cost less.

[tnt22]

Jeff Foust‏ @jeff_foust 1 ч. назад

Koenigsmann: F9 performance to GTO depends on recovery:
3,500 kg for a return to launch site;
5,500 kg for drone ship landing;
6,500 kg if first stage expended.
#IAC2018

[Apollo13]

[Apollo13]

Потихоньку пробелы в нумерации миссий заполняются.

[zandr]

https://tass.ru/kosmos/5658929

ТЕЛЬ-АВИВ, 10 октября. /ТАСС/. Запуск первого израильского космического аппарата по исследованию Луны перенес на 2019 год из-за технических сложностей у компании Илона Маска SpaceX. Об этом сообщает в среду газета Yedioth Ahronoth.
Изначально частная израильская компания SpaceIL и государственный концерн Israel Aerospace Industries намеревались разместить лунный модуль в качестве дополнительной полезной нагрузки на ракете-носителе SpaceX Falcon-9, которая должна была стартовать с космодрома на мысе Канаверал (штат Флорида) в декабре 2018 года. Посадку своего космического аппарата на Луну израильтяне намеревались осуществить 13 февраля 2019 года. Теперь ожидается, что израильская станция отправится к спутнику Земли не ранее первого квартала 2019 года, указывает Yedioth Ahronoth.
Израильский аппарат массой 600 кг создавался в рамках проекта Google Lunar X Prize. Согласно его условиям, частная компания, первой доставившая на Луну автоматическую станцию, способную передвигаться по лунной поверхности на дистанцию как минимум 500 м, получала бы приз в $20 млн. В марте нынешнего года компания Google отменила этот конкурс, однако израильская компания продолжила работу над лунным модулем, затратив на проект около $88 млн.

[tnt22]

Chris B - NSF‏ @NASASpaceflight 5 ч. назад

ARTICLE:
Israel's first mission to the moon - to launch on a Falcon 9 - delayed a few weeks -

https://www.nasaspaceflight.com/2018/10/israels-first-moon-launch-falcon-delayed-weeks/ ...

- By Thomas Burghardt (@TGMetsFan98)

 Скрытый текст:

[tnt22]

Michael Baylor‏ @nextspaceflight 47 мин. назад

SpaceX has filed a NOTAM with the FAA and is set to perform a fairing drop test from a helicopter. The test is expected to utilize recovery vessel Mr. Steven. The ship's crew have set her destination to "DROPITLIKEITSHOT."

Track Mr. Steven: https://www.marinetraffic.com/en/ais/home/shipid:3439091/zoom:9 ...

[tnt22]

Michael Baylor‏ @nextspaceflight 16 с. назад

Track live: A Blackhawk helicopter is conducting a #SpaceX fairing drop test. Mr. Steven is in position to attempt a catch.

[tnt22]

https://www.teslarati.com/spacex-mr-steven-helicopter-drop-test-practice/

SpaceX's Mr. Steven returns with Falcon fairing half in net after drop test practice

By Eric Ralph
Posted on October 11, 2018

Captured in a series of photos taken by Teslarati photographers Pauline Acalin and Tom Cross over several days, SpaceX Falcon fairing recovery vessel Mr. Steven and recovery technicians and engineers have been preparing and practicing for a campaign of controlled fairing drop tests.

 Скрытый текст:

By using a helicopter to lift and drop a fairing into Mr. Steven's net, SpaceX will be able to gather an unprecedented amount of data and control far more variables that might impact the success of recoveries. If the fairing is not destroyed in the process, this test series could be as long-lived as SpaceX's Grasshopper program, used to work the largest up-front kinks out of Falcon 9 booster recovery.

Pauline Acalin‏ @w00ki33 20:45 - Oct 6, 2018

Mr Steven looks ready. Should be leaving port at some point today ahead of SAOCOM-1A launch scheduled for Sunday, Oct 7, 7:21pm PT #mrsteven #SpaceX

Although SpaceX technicians managed to reassemble and install Mr. Steven's net and arm fairing recovery mechanisms in just a handful of days, finishing less than 48 hours before the West Coast launch of SAOCOM 1A, the ship remained in port for the mission, passing up its fifth opportunity to attempt recovery of one of Falcon 9's two fairings halves. Why exactly Mr. Steven never left port is unclear and unconfirmed, although SpaceX did mention that recovery would not be attempted this time around during its official launch webcast.

The most likely explanation is mundane - sea states with average swells as large as 4m (13ft) were forecasted (and later recorded) at and around the optimal fairing recovery zone. As a Fast Supply Vessel (FSV) explicitly designed to rapidly and reliably resupply oil rigs and other maritime work areas almost regardless of weather conditions, 4m waves would normally be a tiny pittance for ships as large and heavy as Mr. Steven and would be a nonsensical reason to halt deep-sea operations.


Thanks to their relatively high angle of attack, Mr. Steven's newest arms should not seriously impact his stability, but there is a chance that they limit his operational envelope in high sea-states. (Chuck Bennett)


Mr. Steven seen listing roughly 5 degrees to port during arm installation, July 10th. (Pauline Acalin)


A few-degree list seen during fairing recovery practice, August 13th. (Pauline Acalin)
 
On the other hand, Mr. Steven is without a doubt the most unusual FSV in existence thanks to his massive arms and net, stretching at least 60m by 60m. Based on photos of the arm installation process, significant lists of 5+ degrees are not uncommon when arms are unbalanced during normal staggered (one-at-a-time) installations, and SpaceX quite clearly installs the first two arms on opposite sides and orientations in order to minimize installation-related listing. This indicates that his newest arms have significant mass and thus leverage over the boat's roll characteristics, perhaps explaining why Mr. Steven has performed anywhere fr om 5-10 high-speed trials at sea both with and without arms installed.

Most recently, however, Mr. Steven spent a solid six weeks armless at Berth 240 while some sort of maintenance, analysis, or upgrade was undertaken with those four arms and their eight shock-absorbing booms. It's hard to know for sure, but there are no obvious visual changes between the arms installed in July and August and those now present on his deck, and the net also looks almost identical.

FAIRING DROP TESTS?

What's less familiar these days is an oddly arranged Falcon 9 payload fairing half that has been floating around SpaceX's Port of Los Angeles berths for the last two or so weeks. Up until October 4th, the purpose of that single half was almost entirely unclear. On October 4th, Teslarati's entire space team (Tom, Pauline, and I) coincidentally arrived at the same time as 5-10 SpaceX technicians were working on the fairing, attaching a series of guylines and harnesses and inspecting a number of actuating mechanisms on the half.


First spotted at Berth 52 (JRTI's home), the particular fairing half appears to both be significantly unfinished and potentially cobbled together fr om hardware not meant for flight. Note the writing on the leftmost port: "NOT FOR FLIGHT ... SCRAP". (Pauline Acalin)

Just minutes after we arrived, a worker called out a short countdown and a wholly unexpected crashing noise sounded, followed immediately by several loud clangs as the harness connection mechanisms swung back and connected with metallic parts of the fairing. After the adrenaline wore off, the initial crashing noise was almost certainly the sound of the same mechanical jettison mechanism used to separate fairing halves ~3 minutes after the rocket lifts off.

Once photos of the event could be examined more carefully, that was exactly what we found - the six harness connections were attached to the fairing by way of the same mechanical interface that allows two halves to safely attach to each other. What we had witnessed was a harness separation test, using pressurized gas stored in COPVs (the gold striped cylinders) to rapidly actuate a latch, allowing the metal harness connectors to fall away. This is further evidenced by the presence of neon orange zip-ties connecting the ends of those harnesses to any sturdy fairing structure near the connection port, an easy and (presumably) affordable way to prevent those heavy connectors from swinging down and damaging sensitive piping and components.


An overview of the weird fairing test article just before the harnesses were jettisoned. (Pauline Acalin)


Note the taut, yellow ropes connected to the fairing at its original serparation connector ports. (Pauline Acalin)


Zip-ties prevented the harness connectors from smashing (too hard) into the fairing's innards. (Pauline Acalin)


A Falcon 9 fairing during encapsulation, when a launch payload is sealed inside the fairing's two halves. This small satellite is NASA's TESS, launched in April 2018. (NASA)
 
According to someone familiar with these activities, the purpose of that testing is to prepare for true fairing drop tests from a helicopter. The jettisonable harness would be a necessity for easy drop testing, allowing the helicopter to carry a basic cargo hook and line while technicians inside communicate with the fairing to engage its built-in separation mechanism, all while ensuring that it immediately begins a stable glide or free-fall after dropping.

Observed on October 4th, it was at least moderately disappointing to see Mr. Steven remain in port during the spectacular Falcon 9 launch of SAOCOM 1A, October 7th. Reasons aside, roughly 12 hours after launch, Mr. Steven left on a 10+ hour cruise ~100 miles off the coast, wh ere he repeatedly met up with tugboat Tommy and circled Santa Catalina Island once before heading back to port. Just 24 hours before launch (Oct. 6), the test fairing seen above was placed in Mr. Steven's net for communications and harness testing - 24 hours after launch, Mr. Steven returned to Port of San Pedro after his 10-hour cruise with the same fairing half resting in his net.

Mr. Steven returned to Port of San Pedro around 7pm on October 8th after a day spent at sea, apparently with a Falcon fairing half in tow. This is the second known time that a fairing has been in Mr. Steven's net. The fairing was eventually lifted off around noon the following day. (Pauline Acalin)


An overlay of the paths of travel of a test-related helicopter and Mr. Steven, both on Oct. 8. The yellow plane is the heli at the beginning of a hover, while the gap between blue triangles in the lower left is wh ere Mr. Steven was during that hover. (MarineTraffic + Flightradar24)
 
How and why it got there is unknown, as is the purpose of half a day spent boating around with the half in his net. However, a helicopter known to be involved in fairing drop tests was seen hovering and flying around Mr. Steven at the same time. Perhaps the two were practicing for real drop attempts, or perhaps the helicopter actually dropped a Falcon fairing (from > 2000 feet) and Mr. Steven successful caught it.

What is clear is that SpaceX is just getting started with efforts to perfect fairing recovery and eventually make the practice as (relatively) routine as Falcon 9 booster recovery and reuse is today. The latter was hardwon and the former will clearly be no easier.

[кукушка]

На постепенно строящемся космодроме SpaceX в Boca Chica, Texas, продолжаются земляные работы и постепенное наполнение его различной инфраструктурой.

 Скрытый текст:

https://vk.com/spacex?z=photo-41152133_456248967%2Fwall-41152133_87098

[tnt22]

SpaceX SAOCOM 1A - Launching & Landing pads at SLC-4 comparison in sizes - 4K

Jay DeShetler

Опубликовано: 14 окт. 2018 г.

SpaceX SAOCOM 1A - Vandenberg SLC-4

(0:32)

[tnt22]

Michael Baylor‏ @nextspaceflight 12 мин. назад

SpaceX's Falcon Heavy manifest:
- Arabsat 6A (NET early 2019)
- STP-2 (NET 2019)
- AFSPC-52 (NET September 2020)
- Ovzon (NET Q4 2020)

Pending confirmed payloads:
- Viasat
- Inmarsat

[tnt22]

Michael Baylor‏ @nextspaceflight 41 мин. назад

SpaceX will conduct another fairing drop test between 19:00 UTC on October 17th and 00:01 UTC on October 18th. Mr Steven is enroute to the drop zone.

[tnt22]

Pauline Acalin‏ @w00ki33 3 ч. назад

After an apparent fairing drop test out at sea today, Mr Steven arrived back at port with the fairing half on deck, but no net, at 1:15am PT.
#mrsteven #spacex