Re: [ERPS] Interesting analysis of X-Prize competitors launch modes

2003-05-27 Thread David Masten
I have to say that the several seconds around and after liftoff are quite dangerous for an airplane. Right before I soloed my instructor went over the options for engine failure while on the upwind (from takeoff until the first turn in the pattern) at Reid-Hillview. There were none that I found ve

Re: [ERPS] Interesting analysis of X-Prize competitors launch modes

2003-05-27 Thread David Weinshenker
Randall Clague wrote: > > On Sun, 25 May 2003 14:49:49 -0500, John Carmack <[EMAIL PROTECTED]> > wrote: > > > Actually, I think most on this list are VTVL advocates, although Randall > > may have been corrupted by XCOR by now. :-) > > A fair assessment. :-) > > Given XCOR's environment and mis

Re: [ERPS] Interesting analysis of X-Prize competitors launch modes

2003-05-27 Thread Pierce Nichols
At 08:59 PM 5/27/2003 -0700, Randall Clague wrote: On Sun, 25 May 2003 14:49:49 -0500, John Carmack <[EMAIL PROTECTED]> wrote: Actually, I think most on this list are VTVL advocates, although Randall may have been corrupted by XCOR by now. :-) A fair assessment. :-) Given XCOR's environment and

Re: [ERPS] Interesting analysis of X-Prize competitors launch modes

2003-05-27 Thread Randall Clague
On Sun, 25 May 2003 14:49:49 -0500, John Carmack <[EMAIL PROTECTED]> wrote: Actually, I think most on this list are VTVL advocates, although Randall may have been corrupted by XCOR by now. :-) A fair assessment. :-) Given XCOR's environment and mission, HTHL is the only sensible mode. Given

Re: [ERPS] Interesting analysis of X-Prize competitors launch modes

2003-05-27 Thread Ken Doyle
Andrew, I'm in agreement with most all you wrote. :-) I did want to comment on this part: > One of the possible VT risk mitigation strategies that S-K didn't > mention is assisted launch, like Brian Walker's vehicle. Coupled with > hold down clamps, assisted launch could increase the safety margi

Re: [ERPS] Interesting analysis of X-Prize competitors launch modes

2003-05-27 Thread Ken Doyle
- Original Message - From: "Henry Spencer" <[EMAIL PROTECTED]> To: "ERPS" <[EMAIL PROTECTED]> Sent: Monday, May 26, 2003 2:47 PM Subject: Re: [ERPS] Interesting analysis of X-Prize competitors launch modes > On Sun, 25 May 2003, Ken Doyle wrote: > > ...Always operating only from incredi

[ERPS] CPSS Turns 2 StarBoosters Around in 24 Hours

2003-05-27 Thread Bill Weitze
FYI, from the California Space Authority's e-mail newsletter, SpotBeam California, May 22, 2003. CPSS Turns 2 StarBoosters Around in 24 Hours Cal Poly rocket club demonstrates reusability of its StarBooster models: http://www.californiaspaceauthority.o