SpaceX launch live coverage

[wireties]

Originally Posted by antimatter_john

They stopped the timer at 3:40? wonder why

FYI - the countdown is not supposed to be a linear temporal scale. It is more of a reverse progress indicator (lower number = more progress towards lift-off) . Certain activities occur at each point in the countdown and there is little correlation to clock time. At least that is how NASA did things.

[EricH]

Originally Posted by wireties

FYI - the countdown is not supposed to be a linear temporal scale. It is more of a reverse progress indicator (lower number = more progress towards lift-off) . Certain activities occur at each point in the countdown and there is little correlation to clock time. At least that is how NASA did things.

The timer stop at 3:40 was actually when they scrubbed the 3rd attempt on Monday. It's just that nobody reset the clock. Although SpaceX definitely seems to prefer a running clock most of the time, when they do stop it goes back to whenever they need it to go back to. I've seen 18 and 16 minutes in a couple of the 3 holds they've applied so far (not counting the two scrubs).

FYI, per the webcast page, they're taking a look at the engines, and it could be a few days. Not my department, so I know nothing. I'm sure it'll be announced when the launch crew goes for it again.

[seg9585]

Originally Posted by wireties

FYI - the countdown is not supposed to be a linear temporal scale. It is more of a reverse progress indicator (lower number = more progress towards lift-off) . Certain activities occur at each point in the countdown and there is little correlation to clock time. At least that is how NASA did things.

You are thinking of the "T-" clock vs the "L-" clock. NASA, ULA, etc use both clocks and use T- is the context you describe with built-in holds. However the L- clock represents time from planned engine ignition.
SpaceX did away with the T- clock and uses only the L- (and calls it T-). Although events are sequenced based on clock times, there's no scheduled clock holds and the clock really should be treated like time left until nominal ignition.

[EricH]

Just to wrap this one up: This launch attempt succeeded in delivering its payload to its target orbit.


And yes, I was "stuck at work" during launch... so of course I watched it! (If you didn't figure it out yet, I work at SpaceX.)

[dcarr]

Livestream was having some serious issues for me but I managed to catch the launch.

Check out Elon's twitter (and SpaceX's) for some details and cool shots

https://twitter.com/elonmusk

[Barry Bonzack]

couldn't drive out to the coast last night, but even from 50 miles away that launch was breathtaking. Launches just after sunset are the best.