[roc-chat] Re: Rocstock 41 Pictures + Punisher Drag Race Video
- From: Cliff Sojourner <cls@xxxxxxxxxxxxx>
- To: roc-chat@xxxxxxxxxxxxx
- Date: Mon, 15 Jun 2015 23:33:29 -0700
On 2015-06-15 12:17, R Dierking wrote:
Hum, if there is significant thrust vectoring the only ‘simple’
solution would seem to be a designed high rate of spin out of the
launcher. Not a big fan of that.
for great thrust vectoring use a moonburner. sheesh. seen more
ultimate altitude small fin low margin machines go awry that way.
why not a fan of spin? all the sounding rockets did that. the spin
inducing pad was just as much a part of the system as the rest of the
vehicle. yeah you lose some in drag but gain a lot in reliability and
repeatability. and they launched slightly off 90 degrees.
but flight angle may not matter much. look at the curve of the
derivative of the tangent, that's the rate you lose altitude from a few
degrees off 90o, to 80o, 75 degrees... 15 degrees off sounds like a lot
but really it's just a few percent off from a perfect 90o launch.
regards
Cliff
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