SpaceX Falcon 9 v1.1 - SES-8 - DISCUSSION THREAD

[dcporter]

Saw what looks like snow on the webcast during a closeup of the engines. Condensation falling out from cold GOX clouds?

[Jim]

Ice falling off the vehicle

[dcporter]

Ice falling off the vehicle

Very fine ice!

[Lars_J]

Smooth webcast quality so far - although one of the pad cams is using a lot of compression.

[Norm38]

They mentioned in the webcast that there's a launch window for this flight.  But why does a GEO mission have a window?  The SES-8's final position is fixed over a point on Earth, that rotates with the launch point.  So if there's no relative movement, what closes the launch window?  More like range issues?

[Lars_J]

It's snowing in Florida

[kevin-rf]

Reminds me of snow, what is the temp?

[Jarnis]

Awww.. abort. Guess that means "not today".

[mrmandias]

It could be something they can look at and still launch later in the window, right?

[e of pi]

Something about "LOX load did not terminate during terminal count"?

[Jarnis]

It could be something they can look at and still launch later in the window, right?

Latest word is that they haven't decided yet. So "maybe".

[Joffan]

Positive mention of recycling the count - probably  from L-00:13:00

[sdsds]

What time is "close of window minus 13 minutes?"

[Jason1701]

What time is "close of window minus 13 minutes?"

1830 EST.

[Norm38]

Power supply issue?  My field drives me crazy sometimes, I hate nuisance trips like this.  But then, they haven't built enough of these to get a good cpk.  Get a proper 3 sigma on those values, then pad a bit more.  Nothing ruins my day faster than seeing a board trip out due to 100mV.

[input~2]

Peter B. de Selding ‏@pbdes
SpaceX says they will not continue their webcast through to satellite separation 33 mins after liftoff. It'll shut off before. Odd.

[simonbp]

Peter B. de Selding ‏@pbdes
SpaceX says they will not continue their webcast through to satellite separation 33 mins after liftoff. It'll shut off before. Odd.

They probably lose the signal before then.

[deltaV]

"SpaceX headquarters
Hawthorne, CA, Earth"

[AJA]

Power supply issue?  My field drives me crazy sometimes, I hate nuisance trips like this.  But then, they haven't built enough of these to get a good cpk.  Get a proper 3 sigma on those values, then pad a bit more.  Nothing ruins my day faster than seeing a board trip out due to 100mV.

cpk?

Also, they said LOX Loading did not abort during terminal count. Don't know if that was an anomaly, or just a status update.
The lead flight controller also seemed to suggest that they'd cycle back to hold at T-13:00 while AVI (Avionics) worked on the issue.
And then there was something about the first stage not transitioning to internal power.
Finally there was a change in some telemetry power limit. (What this was wasn't elaborated).

But hey, we're counting again.


...and scrubbed for the second time.




And I'm going to go ahead and assume that this one wasn't due to avionics limits etc. Is there any difference in GSE between the Cassiope F9 v 1.1 launch at Vandenberg and at SLC-40? Specifically with the LOX stuff?

[Joffan]

Pretty sure that's no launch today folks...