Helicopter cruise fuel conserving engine control

Details Helicopter cruise fuel conserving engine control Helicopter cruise fuel conserving engine control

1982-04-16

1984-12-11

Chin, Gary

Boots, shoes, and leggings

36443101, 36443105, 244182, F02C 908

Patent

active

044882360

ABSTRACT:
A digital fuel control (53) for a helicopter engine (20) controls fuel flow (52) to the engine in response to a turbine reference speed (62) determined in a normal mode (FIG. 5) to be a rated speed, in a fade-in mode (FIG. 6) to be incremented (117, 120) to an estimated optimum minimum speed (114, 115, 125), in an optimizer mode (FIG. 7) to be incremented (138) in a direction (137) leading to least fuel consumption (135), and in a fade-out mode (FIG. 8) to be incremented (151, 153) back to rated speed (154). The invention provides an engine reference speed which results in minimum fuel consumption during cruise flight.

REFERENCES:
patent: 3863054 (1975-01-01), Monpetit
patent: 4159088 (1979-06-01), Cosley
patent: 4322800 (1982-03-01), Hisegawa et al.
patent: 4325123 (1982-04-01), Graham et al.
patent: 4344141 (1982-08-01), Yates

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