Bleed valve control system

Details Bleed valve control system Bleed valve control system

1976-10-19

1978-07-25

Husar, C. J.

Rotary kinetic fluid motors or pumps

Method of operation

415 28, 415 29, 60226R, F01D 1706

Patent

active

041025954

ABSTRACT:
The opening of variable bleed doors is scheduled as a function of both booster and compressor speed so as to better maintain the desired booster stall margin and increase efficiency during certain periods of engine operation. The schedule based on core speed is modified in response to changes in fan speed to increase or decrease the amount of bleed, thereby increasing stall margin or improving the steady-state performance, respectively.

REFERENCES:
patent: 2785848 (1957-03-01), Lombard et al.
patent: 2837269 (1958-06-01), Torell
patent: 2873576 (1959-02-01), Lombard
patent: 2978166 (1961-04-01), Hahn
patent: 3091080 (1963-05-01), Crim et al.
patent: 3638428 (1972-02-01), Shipley et al.
patent: 3688504 (1972-09-01), Hutchinson et al.
patent: 3996964 (1976-12-01), McCombs

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