[extropy-chat] SpaceX launch attempt later today

spike spike66 at comcast.net
Thu Mar 22 00:14:46 UTC 2007

> -----Original Message-----
> From: extropy-chat-bounces at lists.extropy.org [mailto:extropy-chat-
> bounces at lists.extropy.org] On Behalf Of Damien Broderick
> Sent: Tuesday, March 20, 2007 10:18 PM
> To: ExI chat list
> Subject: Re: [extropy-chat] SpaceX launch attempt later today
> At 09:40 PM 3/20/2007 -0700, spike wrote:
> >As far as I could tell it was still
> >going pointy end first at the end of the video.
> http://www.space.com/missionlaunches/070320_spacex_falc1_test2.html
> The roll control glitch affected how the Falcon 1 booster's second
> stage controlled itself in flight, sending the vehicle on a path that
> likely reentered the Earth's atmosphere over the Pacific Ocean
> without completing a full orbit, Musk said. The malfunction could
> have been due to a range of issues, such as helium leak or a roll
> control jet glitch, but only a subsequent analysis will root out the
> cause, he added.


I spoke to my propulsion guy today who said a wobble like that can get the
fuel sloshing around the outside of the tank such that the bird runs out of
fuel with some still in the tank.  A sophisticated rocket can deal with that
level of roll, but this one probably didn't have the high end fuel slosh
scavenging equipment.  {8-[  Damn.


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