Propeller with variable rate of pitch change

Details Propeller with variable rate of pitch change Propeller with variable rate of pitch change

1996-01-22

1999-08-03

Denion, Thomas E.

Fluid reaction surfaces (i.e., impellers)

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

With electrical means comparing and reducing error related...

416 48, 416161, 416165, 416167, B63H 300

Patent

active

059316373

ABSTRACT:
A propeller is controlled to change pitch at at least two different rates. In one embodiment, an electric motor is provided with a high or low voltage for driving a pitch change mechanism at a high or low change rate. Preferably the rate is selected automatically. Preferably, the high rate is not used unless the current pitch is below a threshold.

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