Author Topic: Vega-C VV21, maiden flight - LARES 2 - 13 July 2022 (13:13 UTC) (Read 70258 times)

Steven Pietrobon · « **Reply #120 on:** 07/13/2022 11:17 am »

Clock reset to T-4 minutes and holding.

Chris Bergin · « **Reply #121 on:** 07/13/2022 11:34 am »

Overview while we wait:
https://www.nasaspaceflight.com/2022/07/vega-c-debut-launch/

Sirflashback · « **Reply #122 on:** 07/13/2022 11:36 am »

Ground systems are green again. Waiting for the go of the launch authorization

https://twitter.com/EuropeSpacePort/status/1547182046958731264

aga · « **Reply #123 on:** 07/13/2022 11:41 am »

new launch time is 12:13 utc

Steven Pietrobon · « **Reply #124 on:** 07/13/2022 11:41 am »

Launch rescheduled to 12:13 UTC.

eeergo · « **Reply #125 on:** 07/13/2022 11:44 am »

Seems to be one of those "overly conservative" redline parameters that we're used to seeing in many of the first-time flows for new vehicles:

https://twitter.com/marinofrag/status/1547182078751608835

Steven Pietrobon · « **Reply #126 on:** 07/13/2022 12:08 pm »

Commentary has resumed.

Steven Pietrobon · « **Reply #127 on:** 07/13/2022 12:08 pm »

Board is green.

eeergo · « **Reply #128 on:** 07/13/2022 12:09 pm »

Clock is not running?

Never mind, it is now, but there was a few seconds' delay between the DDO saying "top!" and the clock picking up. Might have been a stream thing.

Steven Pietrobon · « **Reply #129 on:** 07/13/2022 12:10 pm »

Automatic sequence has started.

eeergo · « **Reply #130 on:** 07/13/2022 12:12 pm »

Past T-90 s.

And hold again! Now at T-84 s, for range safety and pad reds.

Steven Pietrobon · « **Reply #131 on:** 07/13/2022 12:12 pm »

Another red!

Steven Pietrobon · « **Reply #132 on:** 07/13/2022 12:13 pm »

Triggered by safety. Clock stopped at T-1 minute 23 seconds.

Steven Pietrobon · « **Reply #133 on:** 07/13/2022 12:14 pm »

Commentators taking a break while we wait for a new launch time.

ZachS09 · « **Reply #134 on:** 07/13/2022 12:16 pm »

What safety were they referring to?

Is it fouled Range or a parameter that passed a redline?

Steven Pietrobon · « **Reply #135 on:** 07/13/2022 12:16 pm »

Clock reset to T-4 minutes and holding.

Steven Pietrobon · « **Reply #136 on:** 07/13/2022 12:21 pm »

Quote from: ZachS09 on 07/13/2022 12:16 pm

What safety were they referring to?

Is it fouled Range or a parameter that passed a redline?

I don't know, but the red's were

Autorisation Lancement (Launch Permission)
Etat Base (Base State)
Ensemble de Lancement (Launch Set)
Sauvegarde (Backup)

ZachS09 · « **Reply #137 on:** 07/13/2022 12:26 pm »

In this case, per the fourth parameter you listed, there could be an issue with the backup flight software. Can’t rely on the main computer; make sure there’s enough redundancy.

eeergo · « **Reply #138 on:** 07/13/2022 12:54 pm »

Quote from: ZachS09 on 07/13/2022 12:26 pm

In this case, per the fourth parameter you listed, there could be an issue with the backup flight software. Can’t rely on the main computer; make sure there’s enough redundancy.

I believe "sauvegarde", or "safeguard" literally rather than "backup", is referring to range safety (also correlating it to the "Base status" and "Pad" red conditions).

By the way, the launch window for today will end in 20 minutes' time.

Steven Pietrobon · « **Reply #139 on:** 07/13/2022 12:56 pm »

New launch time of 13:13 UTC.