Inlet guide vane bleed system

Details Inlet guide vane bleed system Inlet guide vane bleed system

1976-12-27

1979-05-29

Garrett, Robert E.

Power plants

Reaction motor

Interrelated reaction motors

60269, 415119, 415145, F02K 306

Patent

active

041563441

ABSTRACT:
This invention is an improvement to a turbofan engine intended to reduce fan noise caused by the interaction of the rotor with secondary flow generated by the inlet guide vanes. A portion of the air flowing through the engine is removed from the fan duct from a region between the inlet guide vanes and the rotor and near the outer periphery of the fan duct by a system of bleed ducts. The ducts have one or more openings in the fan casing. The system may also include means for controlling the flow through the bleed ducts and means for injecting high energy flow into the bleed ducts to assist in ejecting the bleed flow.

REFERENCES:
patent: 3632223 (1972-01-01), Hampton
patent: 3730639 (1973-05-01), Moore

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