Aircraft engine bleed air flow balancing technique

Details Aircraft engine bleed air flow balancing technique Aircraft engine bleed air flow balancing technique

1986-07-11

1988-08-23

Casaregola, Louis J.

Power plants

Combustion products used as motive fluid

60 3907, F02C 608

Patent

active

047651318

ABSTRACT:
A bleed flow modulator is used in conjunction with pressure regulating valves regulating bleed air pressure from each engine to a common manifold. The bleed flow modulator monitors the pressure drop across a heat exchanger, which pressure drop is proportional to flow rate of bleed air through the heat exchanger. By providing a limited authority negative feedback signal to the pressure regulating valve from the bleed flow modulator, flow rate of bleed air from each engine to the common manifold is kept near a desired uniform value, thereby achieving balanced flow extraction of bleed air from the aircraft engines.

REFERENCES:
patent: 2000721 (1935-05-01), Standwick
patent: 2459000 (1949-01-01), Morris
patent: 2648490 (1953-08-01), Messinger et al.
patent: 2723615 (1955-11-01), Morris et al.
patent: 4384818 (1983-05-01), Blotenberg
patent: 4506594 (1985-03-01), Rowland et al.

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