[AR] Re: Regarding Univerity solid rockets for cube-sat launch to orbit
- From: Henry Spencer <hspencer@xxxxxxxxxxxxx>
- To: Arocket List <arocket@xxxxxxxxxxxxx>
- Date: Sat, 3 Mar 2018 14:54:48 -0500 (EST)
On Sat, 3 Mar 2018, Henry Vanderbilt wrote:
...and via liquid thrust vector control, where small amounts of a liquid
propellant are injected into fixed nozzles around the periphery of the
main engine exhaust to steer the overall exhaust direction. Titan 4
used this last on its large solid strapons, for just one example.
Small correction: Titan III. One of the changes made for Titan IV, in
fact, was development of new improved SRBs, whose changes included
gimbaled nozzles instead of LITVC. (The first few Titan IVs flew with the
old SRBs because the new ones ran late, not least because the first test
ended early with a spectacular explosion.) The Titan III LITVC system had
been a constant ops headache, because its valves had a tendency to leak,
and when the fluid leaking would be N2O4, that forced elaborate
precautions for any pad operations after the N2O4 tanks were filled.
Henry
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