JPSS-1 (NOAA-20) – Delta II 7920-10C – Vandenberg SLC-2W – 18.11.2017

[tnt22]

William Harwood‏ @cbs_spacenews 13 сек. назад

D2/JPSS1: Good morning. After back-to-back delays earlier this week, now 1 hour away from a third attempt to launch a United Launch Alliance Delta 2 rocket carrying NOAA's JPSS 1 polar orbiting weather satellite

[tnt22]

Tory Bruno‏Подлинная учетная запись @torybruno 57 сек. назад

Getting a little breezy on upper level winds. Everybody think still thoughts. #JPSS1

[tnt22]

ULA‏Подлинная учетная запись @ulalaunch 2 мин. назад

Now 58 minutes from launch. Today's mission is the penultimate Delta II rocket launch. It's the 154th Delta II flight since 1989 and 53rd for NASA.

[tnt22]

11/18/2017 11:52

The launch team is beginning the "slew" or steering checks of the first and second stage engines. These are gimbal tests of the nozzles on the first stage main engine and twin vernier engines and second stage engine to ensure the rocket will be able to steer itself during launch.

Testing of the Delta 2's flight termination system, which would be used to end the flight in the event of a mishap, was also accomplished in the last few minutes.

[tnt22]

Tory Bruno‏Подлинная учетная запись @torybruno 43 сек. назад

Second stage slews complete

[tnt22]

Spaceflight Now‏ @SpaceflightNow 6 сек. назад

The Delta 2 launch team has finished slew checks on the first and second stage engines. These checks test the rocket's steering mechanisms. https://spaceflightnow.com/2017/11/13/delta-2-jpss-1-mission-status-center/ ...

[tnt22]

11/18/2017 11:58

The first and second stage steering checks have been accomplished. The launch team is now verifying good telemetry and data links with the Delta 2 rocket.

[tnt22]

11/18/2017 12:02

T-minus 15 minutes and holding. Clocks have entered the first of two planned hold periods during the final portion of the terminal countdown. This pause will last 20 minutes in duration.
These holds are designed to give the launch team a chance to deal with any problems and catch up on work that could be running behind schedule.

[tnt22]

Tory Bruno‏Подлинная учетная запись @torybruno 2 мин. назад

Still looking good. No significant issues in work at this time. #JPSS1

[tnt22]

Tory Bruno‏Подлинная учетная запись @torybruno 42 сек. назад[/url

Slews were good. The board is green

[tnt22]

[tnt22]

11/18/2017 12:09

Second stage helium and nitrogen pressurization is reported complete.

[tnt22]

[tnt22]

[tnt22]

[tnt22]

Погода
 

[tnt22]

[tnt22]

NASA_LSP‏Подлинная учетная запись @NASA_LSP 4 мин. назад

Today's 66 second launch window for #DeltaII #JPSS1 has NO Collision Avoidance (COLA) cutouts. The current T-Zero time is the open of the launch window at 1:47:03 a.m. PST (4:47 EST/0947 UTC).

[tnt22]

Tory Bruno‏Подлинная учетная запись @torybruno 3 мин. назад

The count has resumed, T-15 min

[tnt22]

Tory Bruno‏Подлинная учетная запись @torybruno 2 мин. назад

All green on the last balloon ! #JPSS1