Method and apparatus for increasing compressor inlet pressure

Details Method and apparatus for increasing compressor inlet pressure Method and apparatus for increasing compressor inlet pressure

1978-12-27

1981-10-06

Garrett, Robert E.

Power plants

Reaction motor

Method of operation

60226B, F02K 3075

Patent

active

042928028

ABSTRACT:
A plurality of blocker door vanes are disposed in the bypass duct to selectively close off the bypass flow and increase the flow and pressure of the air flowing into the compressor. In this way, the compressor inlet pressure can be increased sufficiently to allow air starts without starter torque assist. The vanes may also be closed down during ground idle to reduce the thrust and increase the compressor bleed pressure and both the pressure and the temperature of the air to the combustor. Provision is made for the controlling of the blocker door vanes as a function of core speed.

REFERENCES:
patent: 2873576 (1959-02-01), Lombard
patent: 3060680 (1962-10-01), Wilde et al.
patent: 3472027 (1969-10-01), Snow et al.
patent: 3514952 (1970-06-01), Schumacher et al.
patent: 3779665 (1973-12-01), Tatem et al.
patent: 3908362 (1975-09-01), Szydlowski
patent: 4043121 (1977-09-01), Thomas et al.
patent: 4069661 (1978-01-01), Rundell et al.
patent: 4080785 (1978-03-01), Koff et al.
patent: 4175384 (1979-11-01), Wagenknecht et al.

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