NASA Chief rules out NASA returning to the moon

On 4/10/2013 8:37 AM, Jeff Findley wrote:

Can't even test spacesuits. Specifically, Apollo (and shuttle, and US-
ISS) spacesuits all use water (for cooling. This works because it is
essentially vented to vacuum where it freezes and sublimates. This
won't work well, or at all, on Mars due to the thin atmosphere.

Water vented to a vacuum will boil, not freeze.

In article , says...

On 4/10/2013 8:37 AM, Jeff Findley wrote:

Can't even test spacesuits. Specifically, Apollo (and shuttle, and US-
ISS) spacesuits all use water (for cooling. This works because it is
essentially vented to vacuum where it freezes and sublimates. This
won't work well, or at all, on Mars due to the thin atmosphere.

Water vented to a vacuum will boil, not freeze.

Nope. Look here for "ice" and "sublimates".

Liquid Cooling and Ventilation Garment
http://en.wikipedia.org/wiki/Liquid_...lation_Garment

Jeff
--
"the perennial claim that hypersonic airbreathing propulsion would
magically make space launch cheaper is nonsense -- LOX is much cheaper
than advanced airbreathing engines, and so are the tanks to put it in
and the extra thrust to carry it." - Henry Spencer