Reformatted list re: Space plumbing, was Re: SPACE: Why so much EVA on ISS?

From: Michael M. Butler (
Date: Sat Mar 17 2001 - 09:29:46 MST

Pesky "helpful" word wrap. :|

Let's try that tradeoffs list again:

         Location: Shirtsleeve environment Fixed bulkhead mount Exposed outside
  Typical Trait: ================== ================ ============
+Ease of assembly High to medium High (initial mate) Medium to low (EVA)
+Accessibility High to low, depending Very low(unmate+EVA) High
-Risk of access Low to high, depending High (unmate+EVA+remate) Medium to high (EVA)
-Risk of fire Significant Potential(depends) Low
-phys stress Low to high (hatch close) Low to very high Low?
                                                   (frame flex)
-thermal stress Very low to low Low to medium Medium to high
-contaminants Very high to medium High to low Low
  /corrosion expos.
-UV/particle/01 exp. Essentially zero Close to zero High
-cold soak Low Low to medium Medium to high
-outgassing Slow to no Probable Likely
-vacuum welding No Possible Occurs
-Potential leak? No Yes Yes
-Gets in the way
  /uses up elbow room Yes Maybe No
  /valuable "cubic"
+Can dog hatches and No Probably Yes
  maintain connection?

This archive was generated by hypermail 2b30 : Mon May 28 2001 - 09:59:41 MDT