SES-20, SES-21 – Atlas V 531 AV-099 – Canaveral SLC-41 – 04.10.2022 2136 UTC

[Pirat5]

погода ещё лучше Atlas V SES L-1 Forecast
04 Oct 2022 = 80%
05 Oct 2022 = 90%

[zandr]

Код Выделить Развернуть

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

Oct. 4 Live Broadcast: Atlas V SES-20/21
United Launch Alliance
A United Launch Alliance (ULA) Atlas V 531 rocket will launch the SES-20 and SES-21 satellites into near-geosynchronous orbit to provide television broadcasting services across the United States. The commercial dual-payload launch is in service to satellite operator SES of Luxembourg. Liftoff will occur from Space Launch Complex-41 at Cape Canaveral Space Force Station, Florida.
Launch Date and Time: Oct. 4 at 5:36 p.m. EDT (2136 UTC).

Go Atlas! Go Centaur! Go SES-20! Go SES-21!
Live blog: bit.ly/av_ses

[zandr]

https://twitter.com/BoeingSpace/status/1577377291478384688/

Boeing Space  @BoeingSpace
Take a peek behind the curtains!
See a glimpse of #SES20 and #SES21 before getting tucked inside the #AtlasV 5-meter fairing.
Tune in for live coverage of tonight's launch starting at 5:16 p.m. ET: https://ulalaunch.com

[zandr]

ULA  @ulalaunch
The countdown has entered the planned 30-minute built-in hold at T-minus 4 minutes. The final readiness polls will be performed during this hold before permission is given to launch. Liftoff time remains 5:36pmEDT (2136 UTC). http://bit.ly/av_ses

Заправка завершена. Перешли к 30-ти минутному удержанию 4-х минутной готовности.

[zandr]

Предстартовый отсчёт возобновился
Вы не можете просматривать это вложение.

[zandr]

Пуск!Вы не можете просматривать это вложение.

[zandr]

Ускорители и ступень с РД-180 отработали штатно.

[zandr]

ULA  @ulalaunch
Successful staging and ignition of the Centaur upper stage is confirmed! The vehicle now weighs a little more than 10 percent of its liftoff mass. http://bit.ly/av_ses

Теперь работает Кентавр.

[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 12 minutes before the second burn begins. http://bit.ly/av_ses

Первое включение отработано - предварительная орбита.

[zandr]

Jonathan McDowell  @planet4589
Centaur first main engine cutoff, parking orbit is 163 x 611 km x 28.09 deg

[zandr]

Код Выделить Развернуть

https://www.youtube.com/watch?v=2C33xJd-gHM

5:44
Atlas V launches SES-20 and SES-21
  SciNews
A United Launch Alliance (ULA) Atlas V 531 launch vehicle launched the SES-20 and SES-21 satellites into near-geosynchronous orbit, from Space Launch Complex-41 at Cape Canaveral Air Force Station, Florida, on 4 October 2022, at 21:36 UTC (17:36 EDT). SES-20 and SES-21 are all-electric 702SP (small platform) satellites equipped with C-band payloads that will operate to provide television broadcasting services across the United States.
Credit: United Launch Alliance

[zandr]

ULA  @ulalaunch
Ignition! The Centaur's single @AerojetRdyne RL10C-1-1 engine has re-ignited to climb from its initial parking orbit into a highly elliptical orbit on the way to near-geosynchronous orbit later tonight. http://bit.ly/av_ses

Второе включение.

[zandr]

ULA  @ulalaunch
Main Engine Cutoff #2 is confirmed for Centaur. The #AtlasV mission now begins a five-hour coast away from Earth before the third burn occurs to circularize the orbit for payload release. http://bit.ly/av_ses

Второе отработано.
Третье - через 5 часов.

[zandr]

ULA  @ulalaunch  ·  30m
The third burn by the Centaur upper stage is complete, finishing powered flight on this launch for @SES_Satellites to directly deliver its twin satellite payloads near their operational orbits. Standing by for the first payload deployment. http://bit.ly/av_ses

[zandr]

ULA  @ulalaunch  ·  28m
Separation confirmed! The United Launch Alliance #AtlasV has delivered #SES20.
@SES_Satellites will position the spacecraft in geostationary orbit at the 103 degrees West orbital slot to relay digital TV signals to millions of homes in the continental U.S. http://bit.ly/av_ses

первый пошёл

[zandr]

ULA  @ulalaunch
Separation confirmed! The #SES21 spacecraft has been deployed by the #AtlasV rocket's Centaur upper stage, completing today's tandem launch for @SES_Satellites to deliver television, radio services and critical network communications to U.S. customers. http://bit.ly/av_ses

Второй пошёл.

[zandr]

Ранее

ULA  @ulalaunch
Our official liftoff time was 5:36:00.244 p.m. EDT (2136:00.244 UTC), right at the opening of the window on the first launch attempt.

[zandr]

ULA  @ulalaunch  ·  11h
MISSION SUCCESS! ULA's #AtlasV launched @SES_Satellites #SES20 and #SES21 to deliver TV, radio and critical data transmission services in support of the FCC's 5G national transition. Success #154 for ULA!

[zandr]

https://celestrak.org/

53960   2022-123A    1,395.58   1.86   35,021   34,958   0.0007569
53961   2022-123B    1,389.24   1.93   35,018   34,711   0.0037266
53962   2022-123C   1,338.23   1.85   35,016   32,680   0.0290365

[Брабонт]

Прекрасная работа "Центавра".