A PRELIMINARY DISCUSSION OF POSSIBLE APPLICATION OF FLUID-FILM BEARINGS TO AUXILIARY POWER A-C GENERATORS IN SPACE VEHICLES
FRANKLIN INST PHILADELPHIA PA LABS FOR RESEARCH AND DEVELOPMENT
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A preliminary, general discussion is given of fluid-film bearings for auxiliary power, AC-generators in space vehicles as a possible alternative to conventional, rolling-element type bearings, the use of the latter being precluded due to relatively high temperature conditions and environmental factors. The gen erators, rated at 30 to 100 KVA at 24,000 rpm, are to be turbine-driven, self-contained units, having no external seals between rotating and stationary elements. The sealed containers are to withstand external pressures of 0 to 1 atmos phere and the ambient generator temperature is given as 600 F. Substances specified as possible working fluids for the closed-cycle turbine are mercury, sulfur, rubidium and aluminum bromide. These fluids are considered as lubricants for the journal and thrust bearings of the generators and the feasibility is discussed regarding their use in the liquid andor in the gaseous state, within a very roughly defined but limited temperature - pressure regime.
- Unmanned Spacecraft
- Electric Power Production and Distribution