Re: OVER-G'ed Bumpy ride in Soyuz?

Brian Gaff wrote:
hang off centre for a while. It worries me a little that now the US is
returning to capsules, that we apparently know so little about what affects
the smoothness of the re-entry. Or what can be done to make it less of a
bumpy ride.


You need to take media reports with a grain of salt since they tend to
put things out of context if it makes their report look more sensationalistic.

It is a given that the capsules will not give the "cadillac" comforts
that the shuttle provides, and that the landings will not be smooth and
that they may experience higher Gs during re-entry. It's just a
capsule. But it seems that uit will be pretty easy to ensure that the
capsule will provide a survivable G force environment no matter what
mistakes are made. Even the Soyuz provides survivable G forces even when
its primary computer fails and it reverts to a simpler ballistic
re-entry.

Capsules are not designed for comfort. They are a very primitive device
for transport. They work and they are cheap. So if you're willing to
forgo the luxuries of the shuttle, they make for a decent taxi ride
between the ground and LEO.


"Rougher than expected" could simply be the equivalent of a person's
first ride in a car over an unpaved road. It doesn't mean that it is
anywhere near dangerous, just that the person had expected it to be smoother.

And while the shuttle gives "cadillac" landings, the shuttle is actually
rougher on occupants during lift-off due to the noise/vibration from the
SRBs, while the more primitive Soyuz gives a quieter environment.

Of course, the "CEV" will be the worse of both worlds: SRBs for liftoff
giving lots of vibration/noise, with capsule for re-entry. Hopefully by
being on top of the stack, the CEV will have less noise/vivration
resonate to the capsule.
.

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