Telstar 12V – H-IIA 204 (F29) – Танэгасима – 24.11.2015 06:50 UTC

[che wi]

РН готовят к отправке в Танэгасиму на следующей неделе.




http://www.sacj.org/openbbs/

[Salo]

http://spaceflightnow.com/launch-schedule/

Nov. 24H-2A • Telstar 12V
Launch window: 0623-0807 GMT (1:23-3:07 a.m. EST)
 Launch site: Tanegashima Space Center, Japan
 A Japanese H-2A rocket will launch the Telstar 12 Vantage communications satellite for Telesat. Telstar 12V will provide broadband communications coverage over the Americas, the Atlantic Ocean, Europe, the Middle East and Africa. The rocket will fly in the "204" configuration with four solid rocket boosters.

[Salo]

http://space.skyrocket.de/doc_sdat/telstar-12v.htm

Telstar 12V (Telstar 12 Vantage)
 

Telstar 12V (Telstar 12 Vantage) [Astrium]
 
Astrium has been awarded a contract in August 2013 by global satellite operator Telesat to build the Telstar 12 Vantage (Telstar 12V), the latest addition to Telesat's fleet of communications satellites. This satellite will use Astrium's highly-reliable Eurostar E3000 platform.
Telesat's new, multi-mission satellite will replace and significantly expand on Telstar 12 at 15 degrees West. Scheduled to be launched at the end of 2015, Telesat's newest satellite will have powerful coverage of the Americas and EMEA regions as well as maritime zones in Europe, the Caribbean and South Atlantic.
Telesat's newest satellite will have a launch mass of under five tonnes with 11 kW of electrical power. It has been designed to have a nominal service life of more than 15 years in orbit.
[TH]Nation:[/TH] [TH]Type / Application:[/TH] [TH]Operator:[/TH] [TH]Contractors:[/TH] [TH]Equipment:[/TH] [TH]Configuration:[/TH] [TH]Propulsion:[/TH] [TH]Power:[/TH] [TH]Lifetime:[/TH] [TH]Mass:[/TH] [TH]Orbit:[/TH]

USA

Communication

Telesat

EADS Astrium → Airbus Defence and Space

52 Ku-band transponders

Eurostar-3000

?

2 deployable solar arrays, batteries

15 years

~5000 kg

GEO

[anik]

Launch of Telstar 12 VANTAGE aboard H-IIA Launch Vehicle No. 29
http://global.jaxa.jp/press/2015/09/20150918_h2af29.html

Mitsubishi Heavy Industries, Ltd. (MHI) and the Japan Aerospace Exploration Agency (JAXA) are pleased to announce the launch schedule for Telesat's broadcast and telecommunication satellite, Telstar 12 VANTAGE, by H-IIA Launch vehicle No. 29 (H-IIA F29):

Scheduled date of Launch    ：    November 24 (Tue.), 2015 (Japan Standard Time, JST)
Launch time    ：    15:23 through 17:07 (JST) *
Reserved Launch Period    ：    November 25 (Wed.) through December 31 (Thu.), 2015
Launch site    ：    Yoshinobu Launch Complex at the Tanegashima Space Center
* Launch time will be set for each launch day if the launch is delayed.

H-IIA Launch Vehicle No. 29 (H-IIA F29) incorporates the outcome of the H-IIA UPGRADE that focuses on upper stage modifications to launch satellites more flexibly than ever.

[ZOOR]

Япония запустит первый коммерческий спутник в ноябре

ТОКИО, 18 сен — РИА Новости, Ксения Нака. Япония запустит первый коммерческий спутник в ноябре, соответствующий заказ был принят от Канады, сообщило агентство Киодо со ссылкой на министерство образования и науки.

Телекоммуникационный спутник TELSTAR 12V канадской компании TELESAT будет выведен на орбиту ракетой Н2А с космодрома Танэгасима на юге Японии 24 ноября. Министерство рассчитывает в дальнейшем запускать до 20 коммерческих спутников в год. После вывода на орбиту спутник будет отвечать за телекоммуникационное сообщение над обширной территорией Южной Америки и Атлантического океана.

РИА Новости http://ria.ru/world/20150918/1259575993.html#ixzz3m7l5JYRn

Неплохая пропускная способность у КРК запланирована.

[triage]

от 2013 года https://www.telesat.com/sites/www.telesat.com/files/news/telesat_orders_telstar_12_vantage_-_final.pdf

 https://www.telesat.com/our-fleet#telstar-12v


https://www.telesat.com/sites/www.telesat.com/files/satellite/telesat_satellitebrochurea4_telstar12v_2.pdf


pdf на японском посвещенные запуску H-IIA F29
68 стр http://www.mext.go.jp/component/b_menu/shingi/toushin/__icsFiles/afieldfile/2015/09/10/1360312_1.pdf
24 стр http://www.mext.go.jp/component/b_menu/shingi/toushin/__icsFiles/afieldfile/2015/09/10/1360312_2.pdf
18 стр http://www.jaxa.jp/press/2015/09/files/20150918_h2af29.pdf

p.s. зацепишься за что-то в новостном российском изложении... и найдешь множество отличий - например по обслуживаемой территории

[che wi]

H-IIA UPGRADE – Moving to a new stage
http://global.jaxa.jp/projects/rockets/h2a/upgrade.html

[triage]

фото галерея на сайте JAXA по запуску F29
фото галерея на сайте MHI

страница миссии на сайте MHI

видео сравнения, моделирования при запуске на Геостационарную орбиту




видео было к этой пресс конференции (на японском)
pdf презентации

[fagot]

Значит, увеличили САС второй ступени и она будет выдавать апогейный импульс, как и наши РБ, в итоге избыток энергетики носителя для спутника непредельной для Н-2А массы будет использован наиболее выгодным образом и Телстар выведут на "европейскую" ГПО с недобором 1490 м/с.

[che wi]

Отсчёт до трансляции пуска:

[ОАЯ]

Кто может объяснить по простому:
В книгах описывается самый экономичный способ перехода с одного наклонения на другое через эллиптическую орбиту с более высокой апогейной точкой. Почему на видео не так?


Может быть, потому, что 36000 км это слишком далеко, чтобы экономить в мелочах?

[fagot]

Вы имеете ввиду переход через суперсинхронную орбиту? Для ГСО выигрыш начинается с широты точки старта 39 градусов, а Танегасима южнее, поэтому, если ступень способна выполнять апогейное включение, выгоднее делать его на высоте ГСО.

[che wi]

С погодой в Танегасиме пока не очень.

[Salo]

http://spaceflightnow.com/2015/11/23/sporting-new-upgrades-h-2a-rocket-readied-for-flight/

Sporting new upgrades, H-2A rocket readied for flight       
Posted on November 23, 2015 by Stephen Clark

A Japanese H-2A rocket arrived at the launch pad Monday for liftoff with the Telstar 12 Vantage communications satellite. Credit: MHI
 
A Japanese H-2A rocket is set for liftoff Tuesday on its first fully commercial mission, carrying a communications satellite for Telesat of Canada that will bridge the Atlantic Ocean with expanded coverage for television broadcasters and mobile users from Latin America to the Middle East.
Engineers from Mitsubishi Heavy Industries, the H-2A rocket's builder and operator, rolled the rocket out of its vehicle assembly building at the Tanegashima Space Center on Monday, transferring to a nearby seafront launch complex for fueling and final preparations.
Launch crews will load cryogenic liquid hydrogen and liquid oxygen into the H-2A rocket in the hours before blastoff on its 29th flight.
Fitted with four solid rocket boosters, the H-2A is set for liftoff at 0623 GMT (1:23 a.m. EST) Tuesday, the opening of a 104-minute launch window.
The launch will debut an upgraded upper stage capable of a long-duration coast, extending the H-2A rocket's in-orbit life span four hours over previous missions.
Japanese engineers updated the upper stage to allow the H-2A rocket to deploy communications satellites in higher orbits closer to their eventual operating posts in geostationary orbit, a belt 35,786 kilometers (22,236 miles) above the equator.
Satellites in geostationary orbit move around Earth at the same rate the planet rotates, making the spacecraft hover over a fixed geographic location, an ideal attribute for communications satellites.
Most rockets drop satellites heading for such orbits in egg-shaped transfer orbits with low points dipping well below geostationary altitude, leaving the spacecraft themselves to do the rest of the work. The energy required to push payloads toward orbits directly over the equator also counts against the satellites' propellant reserves.
The result is satellites launched into lower orbits with higher inclinations — meaning farther from their final destinations — must consume more of their own fuel, reducing the amount left for the rest of their missions.
The payload on Tuesday's launch is the Telstar 12 Vantage communications satellite, a multipurpose signals relay station owned by Telesat of Canada. Telesat sel ected the H-2A rocket for the launch in 2013, giving Japan's workhorse launcher its first dedicated commercial flight.
The H-2A has flown commercial secondary payloads before, but the Telesat contract marked its first in the global telecom market.
Built by Airbus Defense and Space, Telstar 12 Vantage is heading for geostationary orbit at 15 degrees west longitude, but the upgrades slated to fly on Tuesday's H-2A rocket launch will put Telstar 12 Vantage in a higher orbit than achievable on previous H-2A flights.

The Telstar 12 Vantage satellite, seen here in its factory in France, will cover a swath from Latin America to the Middle East with up to 52 Ku-band transponders. Credit: Airbus Defense and Space
 
Many other rockets launching large communications satellites regularly place their payloads into higher orbits like the one targeted Tuesday, and Japanese officials said the H-2A needed the capability to become competitive in the global launch market.
Europe's Ariane 5 rocket, which launches many commercial telecom satellites, flies from a space base in French Guiana near the equator, reducing the maneuvers the spacecraft must do for itself once in orbit.
Other rockets, such as Russia's Proton/Breeze M, release their payloads in high-altitude orbits after up to nine hours of in-space maneuvers to overcome the high latitude of the Proton's launch pad at the Baikonur Cosmodrome in Kazakhstan.
The H-2A rocket's launch facility on Tanegashima Island, which lies just off the southern coast of the southernmost of Japan's main islands, sits near 30 degrees north latitude, far enough from the equator to require payloads expend much of their own propellant to reach their intended geostationary orbits.
H-2A flights with communications satellites of Telstar 12 Vantage's class before Tuesday carried payloads owned by the Japanese government, depositing the craft in stretched orbits at less than 300 kilometers (186 miles) on the low end and up to 35,786 kilometers (22,236 miles) at the high end.
At the end of Tuesday's launch, the Telstar 12 Vantage satellite will end in an orbit ranging from 2,700 kilometers (1,677 miles) to 35,586 kilometers (22,112 miles), with an inclination of 20.1 degrees.
The orbit leaves less lifting to be done with Telstar 12 Vantage's on-board thrusters, leaving extra fuel in its tanks for a service life forecast to exceed 15 years.

The H-2A's upper stage, seen here with its liquid hydrogen tank painted white, is lifted atop the rocket's first stage inside Tanegashima's vehicle assembly building. Credit: JAXA
 
"Through the upgrade development to improve its 2nd stage, the H-2A launch vehicle can allow a satellite in geostationary orbit to have a longer lifetime," Mitsubishi Heavy Industries wrote in a document discussing the upgrades.
The higher orbit is possible due to a third firing of the H-2A rocket's LE-5B upper stage engine, which only needed to ignite twice on the launcher's earlier missions.
Engineers have painted the upper stage's liquid hydrogen tank white. The reflective paint will help keep the super-cold fuel fr om boiling off during the long coast between the second and third burns on Tuesday's launch.
Designers added a lithium-ion battery to keep the rocket powered during the long flight, and propulsion engineers qualified the LE-5B engine for firings at a throttle setting of 60 percent, allowing for a more precise orbital injection, according to Mitsubishi Heavy Industries.
Other changes include a programmed roll to ensure components of the upper stage and the satellite do not get too hold or cold in the harsh vacuum of space, and the installation of tiny thrusters at the base of the upper stage to keep liquid hydrogen and liquid oxygen propellants near the bottom of their tanks and eliminate the risk of sloshing.
Engineers also modified the LE-5B engine's chill-down procedure, which conditions the powerplant for ignition. Cryogenic liquid oxygen will trickle through the engine turbopump during the coast to ensure it is ready for restart.
The first segment of Tuesday's launch will be like most H-2A flights, with the rocket's four strap-on boosters burning out and releasing in pairs two minutes into the flight. The rocket's four-meter (13.1-foot) nose cone will jettison at T+plus 4 minutes, 10 seconds, followed by shutdown of the first stage's LE-7A at T+plus 6 minutes, 40 seconds.
Staging should occur eight seconds later, then the upper stage LE-5B engine will fire up for the first of its three burns and switch off at T+plus 11 minutes, 7 seconds.
The second maneuver is scheduled to begin at T+plus 22 minutes, 36 seconds, and will end at T+plus 26 minutes, 37 seconds.
Then comes nearly four hours of silence as the rocket climbs to geostationary altitude before restarting the LE-5B engine at T+plus 4 hours, 22 minutes and 30 seconds. The third burn will last for one minute, according to a timeline provided by Mitsubishi.
Deployment of Telstar 12 Vantage is scheduled for T+plus 4 hours, 26 minutes, and 56 seconds.

[Lanista]

Трансляция

[Lanista]

Опять чей-то утлый челн заплыл в запретную зону.

[Lanista]

Уплыл.
Пуск в 9.50, кажется, болтово у них с английским.

[triage]

http://global.jaxa.jp/press/2015/11/files/20151124_h2af29.pdf

[Lanista]

5 мин.

[Lanista]

Ушла!