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Old 04-05-2004 | 09:24 PM
  #32  
Woketman
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From: Slidell, LA LA
Default RE: BVM UAT

During the Apollo program (and probably Gemini and Mercury before it), similar technology was used to get fuels to feed in zero G. Think about it. In trans-lunar space, when you need to fire the Command Module's big SPS (Service Propulsion System) engine and there is no up or down in the tank (zero grav), a clunk ain't no good. So there were stainless steel screens or meshes in the hypergolic propellant tanks that used the same surface tension effects to keep the fuels clinging to them (and I think kept them on one side) to allow them to be fed, via pressurized feed, the the main reactant valves.

Same thing makes the BVM UAT and my pleated paper clunk work!