Re: Mass/x-naut/day ...
- From: "hop" <hellsownpuppy@xxxxxxxxx>
- Date: 3 Oct 2005 13:15:34 -0700
Andrew Gray wrote:
> Water 12.99
> (Urine flush water 0.49)
> (Clothes wash water 12.50)
> --------
> 27.98 kg.person.day
>
ISS does away with clothes wash water. Shipping up clothes obviously
adds mass, even a full change every day is a lot less than 12 kg. ISS
also avoids shower and dish wash water. A good example of where policy
can make a significant difference.
Looking at recent progress flights ( see here for a brief overview of
the last 4
<http://www.nasa.gov/mission_pages/station/resupply/index.html> ) it
looks like they use closer to the l0bs/day figure. 1 progress every 3
months for a crew of 2. Progress payload is something over 2000kg, but
a significant portion of that is fuel, spares and other
non-consumables.
Normal consumable payload seems to be about 240 lbs of air/oxygen (they
ship a mix of both. Note that this was increased from ~120 around 16p,
no doubt to make up for elektron problems) and about 1000lbs of water
(19p brought less water, perhaps due to extra water available from
STS-114). Food and clothing isn't specified, but subtracting the listed
fuel delivery gives you an upper bound.
.
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