ULA社,Atlas Vの打上げを天候不良で2日続けて直前に中止

Spaceflghtnow(2/17)
初日は打上げ75秒前に、２日目は5分前程度で中止を決定。

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初日のMission Status Centerの記事を見ると、推進薬排出は約1時間で完了している模様。
２日目のタイムスケジュールが掲載されていたので転載します。計画ホールドが、T-120分に30分間、T-4分に10分間あり、T-120分ホールドの後で推進薬充填作業が開始されています(LOX:T-1:50, LH2:T-1:25)。

T-6:20..10:42am...Countdown begins with rocket power up

T-5:30..11:32am...Weather briefing

T-4:55..12:07pm...Start clearing assembly building area

T-4:20..12:42pm...C-band tracking beacon testing

T-3:40...1:22pm...S-band telemetry link checks

T-2:55...2:07pm...Establish blast danger area roadblocks

T-2:20...2:42pm...Weather briefing

T-2:15...2:47pm...Clear the pad

T-2:00...3:02pm...T-120 minutes and holding (for 30min)

T-2:00...3:27pm...Launch conductor briefing to team

T-2:00...3:29pm...Readiness poll for fueling

T-2:00...3:32pm...Resume countdown

T-1:50...3:42pm...Centaur LOX transfer line chilldown

T-1:43...3:49pm...Begin Centaur liquid oxygen loading

T-1:30...4:02pm...Begin Atlas first stage LOX loading

T-1:25...4:07pm...Centaur LH2 transfer line chilldown

T-1:10...4:22pm...Centaur RL10 engine chilldown

T-1:02...4:30pm...Begin Centaur liquid hydrogen loading

T-0:40...4:52pm...FLight termination system final test

T-0:16...5:16pm...RD-180 engine fuel fill sequence

T-0:10...5:22pm...Weather briefing

T-0:04...5:28pm...T-4 minutes and holding (for 10min)

T-0:04...5:35pm...Readiness poll for launch

T-0:04...5:38pm...Resume countdown

T-0:00...5:42pm..LAUNCH