Could the extra performance required from the second stage to reach orbit after first stage problem have depleted the second stage in such a way that it wasn't able to perform the Orbcomm part of the mission ?
Quote from: hektor on 10/08/2012 07:16 amCould the extra performance required from the second stage to reach orbit after first stage problem have depleted the second stage in such a way that it wasn't able to perform the Orbcomm part of the mission ?Gravity loss from one engine out in first stage for 90 seconds is probably < 50 m/s, whereas the injection burn for Orbcomm was supposed to be around 100 m/s and you'd think they'd have SOME performance margin, paricularly with such a lightly-loaded Dragon.
There were satellites other than the ORBCOMM onboard.
Has ORBCOMM said whether their prototype has reached the expected orbit or had to be aborted to LEO?
Note that apparently this Orbcomm satellite will be used for testing, so deployment into the operational orbit may not be necessary.
Quote from: QuantumG on 10/08/2012 06:45 amThere were satellites other than the ORBCOMM onboard.Is this your assumption or do you have information to support this?
And Chris, I'm assuming that we'll see the opening of an SpX Mission Updates thread soon?
Quote from: Skyrocket on 10/08/2012 09:17 amQuote from: QuantumG on 10/08/2012 06:45 amThere were satellites other than the ORBCOMM onboard.Is this your assumption or do you have information to support this?Gwynne said so in the preflight briefing.
Quote from: QuantumG on 10/08/2012 10:15 amQuote from: Skyrocket on 10/08/2012 09:17 amQuote from: QuantumG on 10/08/2012 06:45 amThere were satellites other than the ORBCOMM onboard.Is this your assumption or do you have information to support this?Gwynne said so in the preflight briefing.Any info, which other satellites these are?
Quote from: hektor on 10/08/2012 07:16 amCould the extra performance required from the second stage to reach orbit after first stage problem have depleted the second stage in such a way that it wasn't able to perform the Orbcomm part of the mission ?Gravity loss from one engine out in first stage for 90 seconds is probably < 50 m/s, ...