[AR] Re: APCP properties, was Re: Re: starship abort?
- From: George Herbert <george.herbert@xxxxxxxxx>
- To: arocket@xxxxxxxxxxxxx
- Date: Tue, 25 Apr 2023 12:10:55 -0700
On Apr 24, 2023, at 8:59 AM, David Summers <dvidsum@xxxxxxxxx> wrote:
Just to show the importance of addressing the variability of each batch of
propellant: Note that the space shuttle required that both solid rocket
boosters be cast from the same propellant batch - they were concerned about
differential thrust if they were cast from different mixes using the same
formula!
https://www.space-shuttle.com/srb.htm
Thanks!
Shuttle didn’t quite do that, it would have required enormous mixers…. But they
did have the same batch poured into both right and left booster matching
segments of the segmented booster. There could be variations segment to
segment but they’d be the same side to side. Thrust might vary a bit flight to
flight as long as it was right/left balanced.
-george
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