Just a possible ignition source clue is all I'm saying . The frame grab is at
1:12 in the original video posted. The is a definite downward spike visible
below the outgassing ball. But it is the ball that rapidly expands to consume
the rocket. I think we can agree it appears to involve & start with stage 2.
The "disassembly" appears to run top to bottom.
Dave
Sent from my iPhone
On Sep 1, 2016, at 3:56 PM, Jonathan Goff <jongoff@xxxxxxxxx> wrote:
Dave,
But the thing is that liquid air won't burn air, you need fuel, oxidizer, and
ignition source to get combustion. And to get an explosion powerful enough to
shred the rocket, it seems like it needs a decent amount of confinement
too... An external combustion event doesn't seem like it would be likely to
do that, but maybe my intuition is off.
~Jon
On Thu, Sep 1, 2016 at 1:53 PM, David Spain <david.l.spain@xxxxxxxxx> wrote:
An early frame grab at 1:12 shows a jet running vertically down the
exterior. Liquid air in combustion? Funny recent topics here were on liquid
air condensation challenges.
Dave
Sent from my iPhone
On Sep 1, 2016, at 2:44 PM, Doug Jones <djones@xxxxxxxx> wrote:
A downloadable copy of 1:10 to 4:10 is here. If you play it back in VLC,
you can adjust the audio track by -12.2 seconds with tools-track
synchronization to make the audio and video synch up. The explosion starts
at 00:02 in this trimmed clip.
http://www.onlinevideoconverter.com/download?id=d3d3i8j9f5f5c2b1&ext=m4v&v=_BgJEXQkjNQ
Doug Jones, Chief Test Engineer
XCOR Aerospace
1325 Sabovich
Mojave CA 93501
(661) 824-4714 x117
cell 661 313-0584
On 9/1/2016 10:24 AM, Nathan Bergey wrote:
Video of RUD posted:
https://www.youtube.com/watch?v=_BgJEXQkjNQ
Ouch.
-Nathan
On Thu, Sep 1, 2016 at 11:21 AM, Nathan Bergey <nathan.bergey@xxxxxxxxx>
wrote:
So far I'm running on the unproven assumption that they hadn't lit yet,Looks like you are correct. From Elon himself a few minutes ago:
and
that this happened during propellant transfer. (As always, I reserve
the
right to be completely confused.)
"Loss of Falcon vehicle today during propellant fill operation.
Originated around upper stage oxygen tank. Cause still unknown. More
soon."
https://twitter.com/elonmusk/status/771394161756942336
-Nathan
