Counterweighted propeller control system

Details Counterweighted propeller control system Counterweighted propeller control system

1996-11-22

1999-04-27

Denion, Thomas E.

Fluid reaction surfaces (i.e., impellers)

With control means responsive to non-cyclic condition...

Impeller rotation speed responsive

416 44, 416 46, 416 47, 416 48, 416 49, 416 50, 416 51, 416114, 416157R, B63H 300

Patent

active

058972935

ABSTRACT:
A system for controlling functions of a propeller having a plurality of blades is disclosed. The system comprises an electronic control for controlling the functions of the propeller. A plurality of backup devices are provided for backing up the electronic control upon the occurrence of conditions. These conditions include at least one of testing, manual override, and a malfunction in the electronic control causing at least one of the functions to endanger safety. The system further includes a bypass device for bypassing the electronic control and for invoking at least one of the plurality of backup devices to acquire control over at least one of the functions. The bypass devices include a mechanism for determining the occurrence of at least one of the conditions and for actuating electronic control override.

REFERENCES:
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patent: 4750862 (1988-06-01), Barnes et al.
patent: 4899641 (1990-02-01), Khan
patent: 5037271 (1991-08-01), Duchesneau et al.
patent: 5042966 (1991-08-01), Schwartz et al.
patent: 5174718 (1992-12-01), Lampeter et al.
patent: 5186608 (1993-02-01), Bagge

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