Re: [ERPS] TPS options

[Ian Woollard]

Randall Clague wrote:

I could be wrong, but I think of it as a flash evaporator on nuclear
steroids.  Dump the water out the back.  It will boil, and then
disassociate, and then blow away, taking a bunch of heat with it.

If you do that you've used the latent heat of vapourisation in cooling the hot air near to the body, rather than in cooling the body; which I don't think is as good, since the cooled air may not be in contact with the vehicle, but I could certainly be wrong also.

It's easier to keep the vehicle cool if none of it gets hot in the
first place.

Trivially true, but that's not an option.

-R

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