NROL-42 (SBIRS HEO-4) – Atlas V 541 (AV-072) – Ванденберг SLC-3E – 24.09.2017, 05:49 UTC

[tnt22]

09/24/2017 06:29

And the chilldown conditioning of liquid hydrogen propellant lines is starting to prepare the plumbing for transferring the Minus-423 degree F fuel into the rocket. The Centaur holds about 12,300 gallons of the cryogenic propellant.

[tnt22]

09/24/2017 06:35

The first stage liquid oxygen loading is transitioning from slow-fill to fast-fill mode.

[tnt22]

09/24/2017 06:43

Centaur liquid oxygen is topping to flight level.

[tnt22]

09/24/2017 06:45

First stage liquid oxygen tank is passing the 30 percent mark. Chilled to Minus-298 degrees F, the liquid oxygen will be used with RP-1 kerosene by the RD-180 main engine on the first stage during the initial minutes of flight today. The 25,000 gallons of RP-1 were loaded into the rocket previously.

[tnt22]

09/24/2017 06:53 Centaur hydrogen loading

Chilldown of the liquid hydrogen system has been accomplished. The launch team has received the "go" to begin filling the Centaur upper stage with the supercold fuel.

[tnt22]

Spaceflight Now‏ @SpaceflightNow 1 мин. назад

Final step in fueling now with loading of 12,700 gallons of liquid hydrogen into Centaur for #NROL42 https://spaceflightnow.com/2017/09/19/av072_journal/ ... (ULA pic)

[tnt22]

09/24/2017 06:57

First stage liquid oxygen now at 60 percent.

[tnt22]

09/24/2017 07:00

Centaur liquid oxygen has reached flight level.

[tnt22]

09/24/2017 07:03

Now beyond the three-quarters level of liquid oxygen on the first stage.

[tnt22]

09/24/2017 07:04

The Centaur liquid hydrogen tank is 50 percent loaded so far. The cryogenic propellant will be consumed with liquid oxygen by the stage's Aerojet Rocketdyne-made RL10 engine.

[oby1]

прямая трансляция будет?

[oby1]

Atlas V NROL-42 Live Launch Broadcast:

Сам нашёл

[tnt22]

09/24/2017 07:12

The liquid hydrogen tank in the Centaur upper stage just reached the 96 percent level. Topping is now beginning.

[tnt22]

09/24/2017 07:12

Fast-filling of the first stage liquid oxygen has been completed. Topping mode is now underway.

[tnt22]

oby1 пишет:
Сам нашёл

А  посмотреть тему - #31 или #73, - глядишь, и искать бы не пришлось

[oby1]

 Ну что, сверхнапряжённый порадует сегодня кого-нибудь?   ;-)

[tnt22]

Spaceflight101 LIVE‏ @S101_Live 3 мин. назад

L-70 Minutes: All #AtlasV tanks are topping up to flight level. Final preps of the hydraulic system commence at this time in the count.

[tnt22]

09/24/2017 07:30 L-60 minutes and counting

The 1.2-million-pound Atlas 5 rocket now stands fueled for flight and activities are proceeding toward a liftoff at 10:30 p.m. local time (1:30 a.m. EDT; 0530 GMT).

[tnt22]

Spaceflight101 LIVE‏ @S101_Live сейчас

Inside one hour to launch. #AtlasV stands fully fueled atop its SLC-3E launch pad, weather is GO and countdown is on track. #NROL42

[tnt22]

Spaceflight101 LIVE‏ @S101_Live 2 мин. назад

The #AtlasV Flight Control System is being configured for launch & receives an updated version of the flight software inside L-1 hour.