RESEARCH AND DEVELOPMENT PROGRAM FOR ROCKET-BORNE CRYOSORPTION PUMP
Final rept. 15 May 1965-15 Jul 1966
NRC EQUIPMENT CORP NEWTON HIGHLANDS MA
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A cryosorption pump, intended for use with a flight mass spectrometer, has been constructed and laboratory tested. The pumping surfaces were formed by first brazing metallized pellets of Zeolon a synthetic Zeolite to copper trays, after which the overlying braze was machined away, exposing bare sorbent. The advantages of this process are that the completed pump is free of volatile or corrosive residues, can be baked at temperatures approaching 300C, and has good thermal contact between sorbent and heat sink. The pump was laboratory tested at 77K, the intended operating temperature for flight, by admitting controlled bursts of air, nitrogen, and argon. The shape and intensity of these bursts simulated those to be expected in flight. It was found that pump will maintain pressures within the operating limits of the spectrometer, and that the speed and total gas capacity of the pump are superior to those of previously flown cryosorption pumps, despite the fact that the sorbent areas of the latter pumps substantially exceed the area of this pump.
- Pumps, Filters, Pipes, Tubing, Fittings and Valves
- Test Facilities, Equipment and Methods
- Solid State Physics