Robomekk @ Robomekk @lemmy.ca

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2 yr. ago

Horsehead Sheeran?

Finally got some new outlets installed in the basement, near my workbench.

Or at least some lights. I think I recall someone saying they would be deployed during orbital night, so hopefully they’ll be visible somehow.

Holding at T-0:00:40

Impression seems to be that they've cleared the issue and are proceeding towards launch.

Exciting!

Update: hold in the count apparently.

Excited to see mock Starlink deployment, hopefully.

Wouldn’t that be 60 Hz without a rectifier, and 120 Hz with one? If the voltage crosses zero twice per cycle, but goes negative only once.

I think this is the correct link for the SpaceX official feed on X/Twitter: https://twitter.com/i/broadcasts/1LyxBnOvzvOxN

Looks like it's scheduled to start at 6:56 CDT now that launch is targeting 7:30 AM CDT.

Looks like some sort of fuelling is underway. Or at least chilling lines in the OLM and tower in preparation for filling.

Countdown and Flight Test Timeline (from SpaceX Site)

Countdown All times approximate Hr/Min/Sec Event

• 01:15:00 SpaceX Flight Director conducts poll and verifies GO for propellant load
• 00:53:00 Ship LOX (liquid oxygen) load underway
• 00:51:00 Ship fuel (liquid methane) load underway
• 00:42:00 Booster LOX load underway
• 00:41:00 Booster fuel load underway
• 00:19:40 Raptor begins engine chill on booster and ship
• 00:03:30 Booster propellant load complete
• 00:02:50 Ship propellant load complete
• 00:00:30 SpaceX flight director verifies GO for launch
• 00:00:10 Flame deflector activation
• 00:00:03 Raptor ignition sequence begins
• 00:00:00 Excitement guaranteed

Flight Test Timeline All times are approximate Hr/Min/Sec Event

• 00:00:02 Liftoff
• 00:00:52 Max Q (moment of peak mechanical stress on the rocket)
• 00:02:42 Booster MECO (most engines cut off)
• 00:02:44 Hot-staging (Starship Raptor ignition and stage separation)
• 00:02:55 Booster boostback burn startup
• 00:03:50 Booster boostback burn shutdown
• 00:06:36 Booster is transonic
• 00:06:46 Booster landing burn startup
• 00:07:04 Booster landing burn shutdown
• 00:08:35 Starship engine cutoff
• 00:11:56 Payload door open
• 00:24:31 Propellant transfer demo
• 00:28:21 Payload door close
• 00:40:46 Raptor in-space relight demo
• 00:49:05 Starship entry
• 01:02:16 Starship is transonic
• 01:03:04 Starship is subsonic
• 01:04:39 An exciting landing!