Author Topic: LIVE: Falcon 9 Flight 1 Maiden Flight - June 4, 2010 (Read 499371 times)

Satori · « **Reply #380 on:** 06/04/2010 05:47 pm »

Quote from: DaveS on 06/04/2010 05:46 pm

Quote from: Satori on 06/04/2010 05:45 pm
If window closes at 1800UTC I don't see they'll make it today...
It closes 1900UTC. Four window remember?

Ah! Thanks Dave!!!

Ronsmytheiii · « **Reply #381 on:** 06/04/2010 05:47 pm »

Potential range infringement with a couple vessels, sending out choppers to make sure they don't cross into the restricted zone

ChefPat · « **Reply #382 on:** 06/04/2010 05:48 pm »

The Countdown clock is reset to T-15.

Chandonn · « **Reply #383 on:** 06/04/2010 05:48 pm »

Clock has recycled to T-15:00

ugordan · « **Reply #384 on:** 06/04/2010 05:48 pm »

Is that the sun peeking through the clouds? The colors in that webcam view make everything look gloomy, but shadows started appearing on the vehicle.

Nick L. · « **Reply #385 on:** 06/04/2010 05:48 pm »

iamlucky13 · « **Reply #386 on:** 06/04/2010 05:50 pm »

Quote from: ugordan on 06/04/2010 05:44 pm

Quote from: iamlucky13 on 06/04/2010 05:42 pm
Can anyone confirm they start the engines in staggered fashion, not all at once?

Simultaneously.

Hmm. I might have misinterpreted what I saw, or a small amount of fuel reaching the chambers may have been the second flash.

bad_astra · « **Reply #387 on:** 06/04/2010 05:50 pm »

Potential T-0 of 1830

Chris Bergin · « **Reply #388 on:** 06/04/2010 05:50 pm »

If they don't scrub for the day, the new T-0 will be at the end of the window (or near about) as there's things like changing out the engineering camera (film) which takes a while.

amon · « **Reply #389 on:** 06/04/2010 05:50 pm »

Jim: I remember watching that STS-1 launch with my engineering team from a process control product development we'd just completed and we had a laugh when we heard about one CPU locking on the wrong edge. We'd been there and done that!

daj24 · « **Reply #390 on:** 06/04/2010 05:51 pm »

sorry to join the party late but where is the live feed located?

Ford Mustang · « **Reply #391 on:** 06/04/2010 05:51 pm »

SpaceX Falcon 9 Pad Abort video:

drdave · « **Reply #392 on:** 06/04/2010 05:51 pm »

Interesting note on the Space-X webcast page: 10:30 AM PST "It looks as if we may have experienced a shutdown condition just after ignition. In these situations the vehicle puts itself into “safe mode”. There may be the chance to “recycle” the count and try again."

Downix · « **Reply #393 on:** 06/04/2010 05:52 pm »

Quote from: daj24 on 06/04/2010 05:51 pm

sorry to join the party late but where is the live feed located?

http://www.spacex.com/webcast.php

Ben the Space Brit · « **Reply #394 on:** 06/04/2010 05:54 pm »

For me, the most significant parallel to this situation was the failure on the first static fire attempt. Could there be an issue with the engine monitoring system? Are the abort criteria too tight?

Admittedly, it is difficult to make assessments about the system so soon. However, 1/3 ignitions being successful to date (and the aborts happening at the last possible moment) might suggest something needs to be looked at more closely.

Chris Bergin · « **Reply #395 on:** 06/04/2010 05:56 pm »

Quote from: Downix on 06/04/2010 05:52 pm

Quote from: daj24 on 06/04/2010 05:51 pm
sorry to join the party late but where is the live feed located?
http://www.spacex.com/webcast.php

And opt for low quality to avoid lagsville.

rkoenn · « **Reply #396 on:** 06/04/2010 05:56 pm »

If they cannot come up with the reason and determine it would allow for a recycle in this time frame then they should call for a scrub today. They should not attempt another launch if they do not fully understand the cause. Of course I would certainly hope they are thinking along those lines. They have nothing to prove that won't be proven if they succeed tomorrow after a thorough analysis and also come up with a fix for whatever happened. And although I doubt Elon will let it out anytime soon they should explain it to the world what it was in straight forward terms and not obtuse excuses. I respect what Elon has managed to do but still don't care for his secretiveness and irrelevant analogies.

Norm Hartnett · « **Reply #397 on:** 06/04/2010 05:57 pm »

Quote from: Ben the Space Brit on 06/04/2010 05:54 pm

For me, the most significant parallel to this situation was the failure on the first static fire attempt. Could there be an issue with the engine monitoring system? Are the abort criteria too tight?

Admittedly, it is difficult to make assessments about the system so soon. However, 1/3 ignitions being successful to date (and the aborts happening at the last possible moment) might suggest something needs to be looked at more closely.

As I remember they went through a similar process with the Falcon 1's. Gradually loosening the abort criteria with experience.

Ford Mustang · « **Reply #398 on:** 06/04/2010 05:57 pm »

Pad abort involved an out-of-limit startup parameter. Looking for a new T-0. Stand by.

Nick L. · « **Reply #399 on:** 06/04/2010 05:58 pm »