Variable double lip quiet inlet

Details Variable double lip quiet inlet Variable double lip quiet inlet

1977-03-28

1979-01-02

Cohan, Alan

Fluid handling

Processes

Cleaning, repairing, or assembling

244 53B, 181214, B64D 3302

Patent

active

041322401

ABSTRACT:
An inlet for a gas turbine engine is provided with a fixed geometry upstream lip defining the primary inlet flow passage, and a variable position downstream lip partially defining an efficient auxiliary fluid flow passage through the inlet. The upstream lip is sized to pass all of the engine flow requirements at a near-sonic average Mach number during engine approach operating conditions. Apparatus is provided to position the variable lip for modulating flow through the auxiliary passage during higher engine power settings.

REFERENCES:
patent: 3446223 (1969-05-01), Hancock
patent: 3618876 (1971-11-01), Skidmore
patent: 3662556 (1972-05-01), Poucher

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