RAM fan system for an aircraft environmental control system
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United States of America Patent
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Jul 20, 2010
Grant Date -
Mar 23, 2006
app pub date -
Apr 12, 2005
filing date -
Sep 22, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An environmental control system includes a RAM air fan system downstream of a respective heat exchanger in the relatively high temperature RAM exhaust. The RAM air fan includes a RAM air fan electric motor such that the RAM air fan is driven at a speed independent of an air cycle machine. A fan rotor is completely supported by hydrodynamic foil journal and thrust bearings. As the RAM air fan is driven by the RAM air fan electric motor the RAM air fan is installed in the environmental control system as a self-contained system.
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