Emergency cabin pressurization system and method for an...

Details Emergency cabin pressurization system and method for an... Emergency cabin pressurization system and method for an...

2006-11-13

2011-11-01

McAllister, Steven B (Department: 3749)

Ventilation

Vehicle

Pressure regulation

Reexamination Certificate

active

08047903

ABSTRACT:
An emergency pressurization system for an aircraft having an air pump that is powered by bleed air from an engine of the aircraft. Although the air pump is powered by engine bleed air, the air pump draws ambient fresh air from outside the aircraft, compresses the fresh air to a predetermined pressure and pumps compressed fresh air into the pressurized cabin of the aircraft without ever exposing the compressed fresh air to the engine air. The speed of the air pump is selectively controlled as a function of cabin pressure and/or bleed air pressure. In this manner, the cabin is maintained at a constant safe pressure.

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patent: 6848261 (2005-02-01), Claeys

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