USSF-8: GSSAP 5, GSSAP 6 - Atlas V 511 (AV-085) - CCAFS SLC-41 - 21.01.2022 19:00 UTC

[zandr]

  ULA  @ulalaunch
We are entering the final five hours until liftoff of the #USSF8 mission aboard an #AtlasV 511 rocket. All continues to progress smoothly in our countdown and the team is not working any issues that would preclude liftoff at 2:00pmEST (1900 UTC). http://bit.ly/av_ussf8

[zandr]

  ULA  @ulalaunch
The #AtlasV flight control operational test has been accomplished to validate the valve functions and engine steering system performance on the first stage and Centaur upper stage.

[zandr]

ULA  @ulalaunch
_{Trivia Question #3.} The #USSF8 launch will be the #AtlasV rocket's third direct-to-GEO mission. _{Can you name the previous two?}

Прямое выведение на ГСО

[zandr]

Spaceflight Now  @SpaceflightNow
The Atlas 5 countdown began at Cape Canaveral at 6:40am EST (1140 GMT), targeting launch of an Atlas 5 rocket at 2pm EST (1900 GMT).
It'll take almost seven hours to deploy two US Space Force satellites in geosynchronous orbit.

[zandr]

  Spaceflight Now  @SpaceflightNow
ULA's first mission of 2022 will debut a version of the Atlas 5 rocket with a 5-meter-diameter payload fairing & one solid rocket booster, a variant officially designated the "511" configuration but popularly known as the "Big Slider."
Read more: https://spaceflightnow.com/2022/01/20/ulas-first-launch-of-the-year-to-debut-unflown-variant-of-workhorse-atlas-5-rocket/...

РД-180

[Игорь Годунов]

Jan. 21 Live Broadcast: Atlas V USSF-8

Watch live as an Atlas 5 rocket launches for the U.S. Space Force

[zandr]

  ULA  @ulalaunch
The countdown has resumed and we are GO to fuel the #AtlasV rocket with 66,000 gallons of liquid oxygen and liquid hydrogen. ULA Launch Director Eric Richards has authorized cryogenic tanking operations. Liftoff remains targeted for 2:00pmEST (1900 UTC). http://bit.ly/av_ussf8

[zandr]

  ULA  @ulalaunch
Fueling operations have been initiated at the Space Launch Complex-41 pad. The first step in tanking procedures is loading 4,150 gallons of liquid oxygen into the Centaur upper stage for today's launch of the #USSF8 mission. http://bit.ly/av_ussf8

[zandr]

ULA  @ulalaunch
The last step of fueling has started. This will place about 12,300 gallons of liquid hydrogen fuel into the energetic Centaur upper stage to deliver the #USSF8 mission into geosynchronous orbit. Still targeting 2:00pmEST (1900 UTC) for liftoff.

Заправка жидким водородом верней ступени.

[zandr]

ULA  @ulalaunch
Launch Weather Officer Will Ulrich confirms all conditions remain acceptable for liftoff of #AtlasV #USSF8 less than 30 minutes from now. Live reports from the Cape: http://bit.ly/av_ussf8

Погода даёт добро!

[zandr]

(п.с. скриншот виден?)

Нет.

P.S. Смотреть скриншот на стороннем ресурсе? Ссылка на который, вполне вероятно, со бременем протухнет?!
Хотите поделится - грузите на форум.

[zandr]

стоят на Т= -4:00

Вышли на четырёхминутную готовность и ждут начало окна.

[zandr]

  ULA  @ulalaunch
Our mission today is delivery of the GSSAP-5 and -6 spacecraft into geosynchronous orbit for the U.S. Space Force. The data from GSSAP greatly improves our ability to rapidly detect, warn, characterize and attribute disturbances to space systems in the geosynchronous environment.

[zandr]

Т-10 мин.
Вы не можете просматривать это вложение.

[zandr]

Отсчёт возобновлён
Вы не можете просматривать это вложение.

[zandr]

Пуск!
Вы не можете просматривать это вложение.

[zandr]

.
Вы не можете просматривать это вложение.

[zandr]

ULA  @ulalaunch
The first main engine cutoff, or MECO-1, is confirmed for the #AtlasV rocket's Centaur upper stage. It will coast in this preliminary Earth orbit for the next hour before the second burn begins. http://bit.ly/av_ussf8

Центавр первое включение отработал. Орбитальный полёт.

[zandr]

Jonathan McDowell @planet4589
Centaur now in 176 x 519 km x 28.0 deg parking orbit,  coasting to equator before the geotransfer insertion burn
.
Correction: 176 x 319 km, I didn't have the webcast on a sensible resolution and misread it...

[zandr]

Код Выделить Развернуть

https://www.youtube.com/watch?v=NByaaPxj8LQ

6:05
Atlas V launches GSSAP-5 and GSSAP-6
  SciNews
A United Launch Alliance (ULA) Atlas V 511 rocket launched the USSF-8 mission, two identical Geosynchronous Space Situational Awareness Program (GSSAP) satellites - GSSAP-5 and GSSAP-6 - for the U.S. Space Force, from Space Launch Complex 41 at Cape Canaveral Air Force Station, Florida, on 21 January 2022, at 19:00 UTC (14:00 EST). This is the 102nd mission for an Atlas V launch vehicle and the first and only planned flight of the Atlas V 511 configuration, the two-stage rocket with a single solid rocket booster.
Credit: Illustrations, photos and video footage Courtesy of United Launch Alliance