(Yes, you can shut down solids on command, if they're designed for it.)
Yes and even at the 60KLbF level. I saw a Minuteman stage 3 at my work
place at UTC/CSD in S. San Jose where they were regrained, it had 4 or 6
large
blow out port on the forward bulkhead designed for in flight thrust
termination. This was how I learned that solids could be turned off or at
least thrust neutralized circa 1985 before UTC shutdown the CSD facility
all together and returned the site to nature. So sad after millions were
pumped into that facility in anticipation of contracts they never received.
Ken
On Sun, Aug 29, 2021 at 12:04 AM Henry Spencer <hspencer@xxxxxxxxxxxxx>
wrote:
On Sat, 28 Aug 2021, roxanna Mason wrote:
A bit of additional information, the Titan 2nd stage swiveled its turbo
pump exhaust for roll control but,after pump shutdown, I'm not sure how
the velocity was trimmed to the resolution necessary to hit it's target
as did the Atlas and Thor with their vernier engines...
Both Titan second stages in fact had verniers. Titan I had four actuated
nozzles for roll control and velocity trim. Titan II had *solid-fuel*
verniers that were lit at second-stage cutoff and fired for about 16
seconds until guidance shut them down; they were purely for velocity trim,
with the turbopump exhaust duct doing roll during main burn. There are
brief mentions of both systems in Stumpf's book, but an annoying lack of
technical detail.
(Yes, you can shut down solids on command, if they're designed for it.)
Henry
