Angosat – Байконур 45/1 – Зенит-3SLБФ – 26.12.2017 22:00 ДМВ

[tnt22]

http://spaceflight101.com/zenit-angosat-1/zenit-to-launch-angosat-1/

Zenit's Potential Resurrection to Start with Tuesday Launch of Angola's 1st Communications Satellite
December 24, 2017


The first Zenit in over two years rolls to its Baikonur Launch Pad- Photo: Roscosmos

A Russian-Ukrainian Zenit booster was moved to its Baikonur Cosmodrome Launch Pad on Sunday as the first of its kind to take flight in over two years, starting what is hoped to be Zenit's resurrection as relations between the once-interconnected space industries of the two involved countries slowly mend.

Liftoff fr om Baikonur's Site 45/1 is set for 19 UTC on Tuesday and Zenit, outfitted with a Fregat SB upper stage, will be tasked with a multi-hour mission to directly deliver the first Angolan communications satellite to Geostationary Orbit.

Спойлер

Zenit, with over three decades of operation and more than 80 missions under its belt, had fallen victim to the conflict between Russia and the Ukraine... Employing Ukrainian-built stages and Russian engines, production of Zenit came to a halt as relations between the two countries deteriorated, also marking the final nail in the coffin for the multi-national Sea Launch venture that had struggled financially before the Ukraine crisis.


Zenit's Most Recent Launch – Photo: Roscosmos

Hardware for two or three Zenit missions remained at the Baikonur as the situation unfolded in the second half of 2014 and into 2015 while the Sea Launch infrastructure – two sea-going vessels and the home port facility in Long Beach – were taken out of operation and placed on the market for potentially interested parties.

A one-off agreement was reached in 2015 with much political back and forth around the Ukrainian launch processing team traveling to Baikonur to ready one of the Zenits remaining in storage for flight with the Elektro-L No. 2 meteorological satellite. The thunder of Zenit's mighty RD-171M engine roared across the Baikonur Cosmodrome on December 11, 2015 when the vehicle took flight on what many believed would be Zenit's swan song.


Sea Launch Commander & Odyssey Platform – Photo: Sea Launch

Some optimism emerged in 2016 when the S7 Group, owner of S7 Airlines, announced they were purchasing Sea Launch and all its assets, including the Sea Launch Commander Ship and the Odyssey launch platform. That October, a meeting was held with Russian and Ukrainian space officials plus all interested parties in resurrecting the Zenit, resulting in a nonbinding agreement calling for Russia to order up to 12 Zenit vehicles – still pending final green-lighting by the political leadership of both countries.

The meeting also resulted in the decision to allow the launch of a Zenit rocket with the AngoSat 1 communications satellite, initially targeting mid-2017. In a repeating pattern, the departure of Ukrainian engineers for the Baikonur Cosmodrome was made a political bargaining chip by both sides – delaying the readiness of the Zenit booster until at least December. Eventually clearing all political hurdles, teams were able to travel to Baikonur to complete refurbishment steps on the booster that had already crossed its warranty date.


Photo: Roscosmos

AngoSat 1, manufactured by former Sea Launch majority holder RSC Energia, arrived at the launch site in November to undergo final checkouts before taking its place atop the Zenit rocket. The 1,647-Kilogram satellite is based on Energia's Universal Satellite Platform and hosts a hybrid communications payload built by Airbus Defence and Space, comprising 16 physical C-band and six Ku-band transponders to deliver TV broadcasting and telecommunications services to Angola as the African nation's first owned geostationary satellite.

Tuesday's launch will mark the end of an eight-year journey to the launch pad for the satellite, overcoming financial hurdles and waiting for a launch opportunity as it initially targeted a sea-based Zenit launch, was then switched to the second Angara A5 flight that is still waiting for a launch date and moving back to a Zenit launch out of Baikonur. Starting its journey, AngoSat is hoped to operate for 15 to 18 years from an orbital position at 14 degrees East in Geostationary Orbit.

>> AngoSat 1 Satellite Overview


Photo: RSC Energia

AngoSat's liftoff was pushed from December 7th to the 26th due to problems with a fuel valve on the Fregat SB upper stage when it was undergoing propellant loading in the second half of November. The failure of a Soyuz/Fregat rocket lifting the Meteor-M 2-1 satellite and a group of international secondary satellites on November 28 did not affect this mission since the failure mechanism was quickly traced back to a previously unknown software bug within the guidance algorithm that can only manifest itself for launches from the Vostochny Cosmodrome due to the geographical orientation of its Soyuz launch complex.

Moving toward Russia's year-closing launch, engineers completed the encapsulation of the Fregat-AngoSat stack on Monday followed by installation of the upper composite on the two-stage Zenit rocket on Wednesday. The assembled Zenit-3SLBF, also known under the simpler designation Zenit-3F, was rolled to Baikonur's Site 45/1 in snowy conditions on Sunday morning to enter the typical two-day on-pad processing campaign comprising the final checkouts of the vehicle ahead of an overnight countdown to an early morning liftoff on Wednesday, local time.


Photo: Roscosmos

Pending clean checkouts of the vehicle and the green light from the Russian State Commission, teams will initiate propellant loading on the vehicle at T-2 hours and 30 minutes – starting with loading some 296 metric tons of -183°C Liquid Oxygen followed one hour later by the start of Kerosene tanking to transfer 113 metric tons to the vehicle's tanks. The Transporter Erector will be lowered at T-15 minutes and move to a safe distance as Zenit enters the final minutes of the count, pressurizing its tanks and switching to internal power with under two minutes to go.

Zenit stands 54 meters tall and weighs 457 metric tons at liftoff, hosting the world's most powerful liquid-fueled engine on its first stage to lift the vehicle off the pad with a thrust of 7.55 Meganewtons through four combustion chambers. RD-171M will come to life at T-3.5 seconds for thrust build-up and engine monitoring before the vehicle will start rising with liftoff targeted for exactly 19:00:00 UTC on Tuesday.

Balancing on its four-chamber main engine, Zenit will climb vertically to depart the Baikonur launch site – showing off its characteristically shaped exhaust plume merging from bright orange to a bluish hue due to the engine's particularly oxidizer-rich mixture and very high chamber pressure.

>> Zenit Launch Vehicle Overview


Photo: Roscosmos

The four nozzles will individually gimbal to steer the rocket onto its departure path to the north-east, heading toward the border between Kazakhstan and Russia.

The first stage will consume nearly 327 metric tons of propellant in less than two and a half minutes, shutting down its RD-171M engine two minutes and 25 seconds into the flight. At that point, the RD-8 vernier engine on the second stage will already be firing to pull the second stage away from the 32.9-meter long booster. When the second stage is clear of the spent first stage, it will fire up its RD-120 main engine to continue pushing toward orbit with a total thrust of 912 Kilonewtons.

Separation of the protective payload fairing will occur just over five minutes into the flight and the second stage will shut down its main engine around the T+7:15 mark and continue firing the RD-8 vernier, itself delivering 78.5kN of thrust, for another minute and 20 seconds to push the upper composite into a preliminary Low Earth Orbit for Fregat SB separation 8.5 minutes after liftoff.

Fregat-SB is the largest member of the Fregat Upper Stage Family, adding a torus-shaped Auxiliary Propellant Tank to the baseline Fregat version flying on the Soyuz rocket. It is 3.9 meters tall and 2.4 meters in diameter with a launch mass of 11,780 Kilograms, powered by a single S5.92 main engine that generates 14 to 19.85 Kilonewtons of thrust.

Roscosmos did not publish a flight profile outline for the Angosat mission, though based on the satellite's launch mass and target orbit it is safe to assume a standard three-burn trajectory into Geostationary Drift Orbit will be followed by the Fregat-SB upper stage, starting with a coast phase until around 74 minutes into the flight when the stage will execute a burn of around eight and a half minutes to empty out its Auxiliary Tank and push the orbit's high point to nearly 5,000 Kilometers in altitude.

Next would be a coast phase of a little over two hours with the second burn in charge of raising the apogee to nearly 36,000 Kilometers to match the satellite's desired injection altitude at GEO. The mission then enters a long coast phase to allow Fregat to climb all the way to the apogee of the orbit wh ere the third burn will occur to lift the perigee to match Geostationary altitude and reduce the inclination to as close to zero degrees as possible. Separation of the satellite would occur just before the mission hits nine hours duration.

[свернуть]

[Вован]

Старый пишет:
Что это написано над воротами? "Зенит-ТМ"?
А Зенит-ТМА будет?    

И "Зенит-МС" будет, только буквы переставить в "Зенит-СМ".

[tnt22]

Вывоз РКН «Зенит-2SБ» с КА «Ангосат»

Телестудия Роскосмоса

Опубликовано: 24 дек. 2017 г.

(2:54)

[ZOOR]

ЗАПУСК КА «АНГОСАТ»
26 декабря 2017
 

   

    

   Запуск космического аппарата «Ангосат» ракетой-носителем «Зенит-2SБ» с разгонным блоком «Фрегат-СБ» запланирован на 26 декабря 2017 года в 22:00 мск с пусковой установки №1 площадки 45 космодрома БАЙКОНУР.

    

   «Ангосат» — космический аппарат (КА), созданный РКК «Энергия» в интересах Республики Ангола, будет обеспечивать вещание в частотных C- и Ku-диапазонах на территорию Республики Ангола, а также на территорию всего африканского континента. Проект «Ангосат» предусматривает создание спутника связи с ретранслятором, запуск его на геостационарную орбиту и создание наземной инфраструктуры связи и телевизионного вещания.

    

   В работе над космическим аппаратом «Ангосат» применен ряд инновационных решений, которые позволили создать достаточно мощный аппарат с относительно малой массой для спутников данного класса – всего 1647 кг. При этом «Ангосат» создан на основе новой служебной платформы, состоящей из компонентов российского производства.

    

   Служебная платформа обеспечивает возможность применения бортового ретрансляционного комплекса мощностью до 7 кВт с номиналами электропитания 28; 50; 100 В. В космическом аппарате «Ангосат» используется электроракетная двигательная установка, которая позволяет проводить длительное довыведение космического аппарата на орбиту (при необходимости) и коррекцию его орбитального положения. В работах по спутнику «Ангосат» впервые применялся созданный в РКК «Энергия» стенд виртуальной реальности.

[tnt22]

http://www.russian.space/306/

Прямая трансляция запуска РН "Зенит-2СБ" с КА "Ангосат"

начало трансляции:		26 декабря 2017		20:00:00 (Московское время)
время запуска:		26 декабря 2017		22:00:00 (Московское время)
окончание трансляции:		26 декабря 2017		23:00:00 (Московское время)

[zandr]

https://www.roscosmos.ru/24460/

Программа полета

Операция	Время (час, мин, сек)	Комментарии
Пуск	22.00.00
Разделение 1 и 2 ступеней	22.02.24	Район падения первой ступени - Карагандинская область, РК.
Сброс головного обтекателя	22.05.22	Район падения головного обтекателя - Алтай, Тыва, Хакасия
Отделение головного блока	22.08.37	Вторая ступень остается на орбите
Вкл. ДУ СОЗ РБ	23.13.57	Формирование промежуточной орбиты
1-е вкл. МД РБ выкл. МД РБ отделение СБ	23.14.52 23.22.47 23.23.24
Вкл. ДУ СОЗ РБ	01.22.58	Формирование геопереходной орбиты
2-е вкл. МД РБ выкл. МД РБ	01.23.53 01.35.01
Вкл. ДУ СОЗ РБ	06.43.06	Формирование целевой орбиты
3-е вкл. МД РБ выкл. МД РБ	06.44.01 06.52.42
Отделение КА	06.54.43	Отделение КА от РБ

[zandr]

В ожидании старта
https://www.energia.ru/ru/news/news-2017/news_12-25.html

РН «Зенит-2SБ» с КА «Ангосат» вывезена на стартовый комплекс 
24 декабря 2017 года на космодроме Байконур состоялся вывоз на стартовый комплекс площадки 45 ракеты-носителя «Зенит-2SБ» с разгонным блоком «Фрегат-СБ», предназначенной для вывода на орбиту космического аппарата «Ангосат».
После завершения операций по установке ракеты в пусковое устройство совместные расчеты предприятий ракетно-космической отрасли приступили к операциям по графику первого стартового дня.
Пуск запланирован в 22:00 мск 26 декабря 2017 года.

Спойлер

«Ангосат» — космический аппарат, созданный РКК «Энергия» в интересах Республики Ангола. Он предназначен для обеспечения вещания в частотных C- и Ku-диапазонах на территории Республики Ангола, а также всего африканского континента. Проект «Ангосат» предусматривает создание спутника связи с ретранслятором, его запуск на геостационарную орбиту и создание наземной инфраструктуры связи и телевизионного вещания.

[свернуть]

Видеосюжет:

[Salo]

http://www.russianspaceweb.com/angosat.html

The Angosat-1 communications satellite

The Angolan satellite or Angosat-1 was designed to be the first national communications spacecraft for the African country of Angola. In part thanks to extensive political, economic and military ties between Russia and Angola dating back to the Soviet period, the Russian firm RKK Energia won the contract for the development of the Angosat-1 satellite.

The Angosat-1 mission at a glance:

Operational orbital position in the geostationary orbit	14.5 degrees East
Spacecraft mass	1,550.0 - 1,647 kilograms
Communications payload mass	262.4 kilograms
Power supply capability	3,753 Watts
Transponders	16 C-band and 6 Ku-band
Guaranteed life span in orbit	15 years
Launch vehicle	Zenit/Fregat
Launch site	Baikonur, Site 45
Launch date and time (planned)	2017 Dec. 26, 22:00:00 (planned)
Project cost	$327.6 million

At the beginning of the 21st century, the Angolan government embarked on a major effort to revamp the nation's telecommunications infrastructure and switch local TV channels from analog to digital format. In order to improve and expand communications across all 117 municipalities and to link the nation to the rest of the African continent, the Angolan Ministry of Telecommunications and Informational Technologies planned to launch the first Angolan communications satellite, Angosat-1.

The spacecraft, which was expected to carry up to 40 C- and Ku-band transponders, could be used for all forms of modern communications including TV broadcasts, telephone service, the Internet and secure electronic services for the government. According to the African press, the Angolan government gave high priority to the project, estimated to cost around $300 million, despite limited financial resources.

In June 2009, Rosoboroneksport, a Moscow-based entity specialized in sales of Russian defense-related technologies reached an agreement with the Angolan government to build and launch the Angosat-1 satellite. The deal was probably sweetened by the fact that Russian banks had agreed to lend the money for the venture. The actual job of building the spacecraft was delegated to RKK Energia, which had pioneered satellite communications in the USSR in the 1960s and returned to this line of work in the 1990s.

After preliminary studies, the practical implementation of the project started in December 2012.

RKK Energia based the design of the Angosat satellite on a standard platform, which had previously served as a basis for the Yamal communications satellite series and the military EKS Tundra early-warning spacecraft. By the standards of modern commercial communications satellites, which reach up to six tons in mass, Angosat was a relatively small spacecraft. The initial mass of the satellite was reported to be around 1,550 kilograms, but shortly before the completion of the project, RKK Energia quoted its mass as 1,647 kilograms, which is a modest increase likely resulting from various design changes during the course of the development.

The company reported that the service module of the Angosat satellite could provide an onboard communications payload with up to seven kilowatts of power with electric current available at 28, 50 and 100 volts.
RKK Energia also said that the platform had consisted of Russian-made components and the company's newest virtual reality design center assisted in the development of the satellite, however, the spacecraft's communications payload was apparently supplied by the European consortium Airbus Defense and Space.
The communications payload aboard Angosat included 16 C-band and 6 Ku-band transponders, whose antennas could provide communications across Angola, but also cover the entire African continent.
Like other satellites in the Yamal series, the Angosat was equipped with electric thrusters which could be used to maneuver the satellite to its operational orbit after launch and then maintain the correct orbital parameters.
 

In addition to the spacecraft itself, Russia also agreed to help Angola build the primary ground control station for Angosat near the Angolan capital of Luanda and a backup facility in Korolev, Russia, as well as train local engineers to operate the satellite in orbit.

In 2017, the total cost of the Angosat project, including ground infrastructure, was reported to be $327.6 million.

RKK Energia's Yamal platform, which served as a basis for the Angosat satellite.

Building Angosat-1

In 2011, Moscow-based banks, including Vneshekonombank, VTB and Roseksimbank, extended a $278.46-million credit to the Angolan Finance Ministry for 13 years to fund the Angosat project.

The full-scale development of the Angosat satellite officially started in November 2013 and was expected to last 36 months. Around that time, RKK Energia began work on the design documentation and it was also preparing for a formal approval of the preliminary design of the spacecraft and its ground complex. That phase was followed with the development of the production documentation and, finally, the production of components for the spacecraft.

In the middle of 2014, RKK Energia said that the planned work for building the satellite and its ground infrastructure was underway.

By 2015, the company reported that the development of the Angosat-1 had passed the critical design review and the design of the ground segment had been submitted to the customer. The project officials were also working on securing necessary communications frequencies for the operation of the satellite.

At the end of June 2015, the Angolan Ministry of Communications announced laying the foundation for the satellite control center in Funda, municipality Cacuaco, near Luanda. According to the Interministerial Commission Coordinating the National Space Program, GGPEN, the prime factor for choosing that particular location was the low level of electromagnetic interference in this largely rural area. The center's communications equipment included a 7.6-meter ZS SKU flight control antenna and a 4.9-meter support antenna. The facility also included two power generators, two electric transformers and a fuel storage, enabling its operation in case of a power outage. A water-treatment plant located five kilometers away on the Bengo river also supported the center.

The futuristic three-story building of the satellite control center, designed by Moscow-based 2K Engineering Company, was completed by September 2016.

In April 2016, the Minister of Telecommunication and Information Technologies of Angola José Carvalho de Rocha announced that the Angosat-1 satellite would be launched in the first quarter of 2017. However in September of the same year, the Izvestiya daily reported that the completion of the Angosat satellite was still two months away. (828) As of October 2016, the Angosat-1 was not expected to be ready before July 2017. The satellite finally reached the launch pad in December 2017.

Known contractors in the Angosat project:

[/li]
• RKK Energia/ZAO ZEM - Prime contractor and system integrator;
• Airbus Defense and Space - Transponder payload;
• AO NII Argon;
• FGUP NII of Command Instruments;
• AO AVEKS;
• PAO Saturn;
• ZAO TsSKT;
• OOO NPO Rubikon-Innovatsiya;
• AO NPP Geophysika-Kosmos;
• OOO NPP TAIS;
• OOO S7 Space Systems;
• FGUP TsNIIMash.
  

[azeast]

https://ria.ru/science/20171226/1511711530.html

Запуск первого национального спутника Анголы AngoSat-1 ("Ангосат" — 1) на ракете-носителе "Зенит-3Ф" с разгонным блоком "Фрегат" назначен на 26 декабря с Байконура, сообщил РИА новости представитель Роскосмоса.
"Старт назначен в 22.00 мск", — отметил собеседник агентства.

Как уточнили в РКК "Энергия", планируется, что головная космическая часть (ГКЧ) в составе разгонного блока "Фрегат" и спутника связи AngoSat-1 отделится от второй ступени ракеты-носителя "Зенит-3Ф" в 22.08 мск. Отделение самого космического аппарата от "разгонника" ожидается в 6.55 мск, а выход "Ангосата" на расчетную орбиту — в 9.23 мск уже 27 декабря.

[ZOOR]

Завтра начнется ангольский спутник

Ангольское общественное телевидение (ТРА) и ТВ Зимбо создают технические условия для трансляции церемонии запуска на орбите Ангосата в 7 утра во вторник с базы Байконур в Казахстане. , первый ангольский спутник, построенный Россией.

Информация была обнародована в четверг в Луанде во время встречи, на которой министр телекоммуникаций и информационных технологий, Хосе Карвалью да Роча, поддерживаемый журналистами в качестве генерального координатора Национальной космической программы.
Директор TPA Channel 1, Пауло Джулиану, подтвердил присутствие в Казахстане команды для проведения полевых испытаний для прямой трансляции церемонии в следующий вторник.

Журналисты - они и в Африке журналисты

[us2-star]

[oby1]

 Ну что, в последний свой пуск, Зенит "поднимет" стол, как тогда, или нет?  :-)

[tnt22]

Прямая трансляция запуска РН "Зенит-2SБ" с КА "Ангосат"

Космический центр "Южный"

[Вован]

oby1 пишет:
Ну что, в последний свой пуск, Зенит "поднимет" стол, как тогда, или нет? :-)

Воронам можно и заткнуться, а не каркать перед пуском!  :evil:

[ZOOR]

Интересный вопрос - форум уйдет в даун или нет?

[Чебурашка]

-

[Чебурашка]

В трансляции кручение одной и той же гайки сто раз подряд показывют

[tnt22]

[tnt22]

[Вован]

Начали захолаживание коммуникаций заправки килопродом