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Old January 4th 07, 08:08 AM posted to sci.space.policy
Alex Terrell
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Posts: 492
Default Sacraficial tanks


Totorkon wrote:
Henry Spencer wrote:
In article . com,
Totorkon wrote:
The shuttle's SRBs hit the ocean at about 85 mph. Would it be
practical to have a liquid booster with a 'crushable' upper tank to
absorb the force of that kind of impact to protect its engine? Some
kind of air bags could cushion and serve as floats when the upside down
booster falls on its side.


As JRF has noted, there are some problems with this in a tail-heavy
booster. That said, schemes along those lines have been proposed many
times. It's not impossible, although there are a number of practical
difficulties. As with the SRBs, though, refurbishing rocket hardware
after it's been soaked in seawater is tedious and manpower-intensive, and
when all is said and done, there is a high payoff for "flyback" schemes
which recover the boosters onto land.
--
spsystems.net is temporarily off the air; | Henry Spencer
mail to henry at zoo.utoronto.ca instead. |


Any site you could refer me to? What about a high lofting trajectory
that puts the boosters a few hundred miles down range in a desert? If
properly floated on the ocean, would the engines necessarily have to
get wet?


Ask any sailor, and I'm sure they'll say yes.