Method and apparatus for controlling pitch of an aircraft propel

Details Method and apparatus for controlling pitch of an aircraft propel Method and apparatus for controlling pitch of an aircraft propel

1998-01-08

1999-12-07

Lopez, F. Daniel

Fluid reaction surfaces (i.e., impellers)

Interrelated controls for impeller and drive means

Pitch adjustment and throttle regulation with condition...

416 1, 416 35, 416 36, 416 37, 416 38, 416 27, 416 28, 416 30, 416 42, 416 39, 416 40, 416 44, 416 47, B64C 1130, B63H 300, B63H 302

Patent

active

059972505

ABSTRACT:
A propeller pitch control apparatus for an aircraft in which the vector sum of the aircraft forward speed and the propeller rotational tip speed is a selected fraction of the speed of sound, the fraction based on percent power and altitude, to maximize efficiency and minimize noise.

REFERENCES:
patent: 1972669 (1934-09-01), Soucek
patent: 2307040 (1943-01-01), Hammond, Jr.
patent: 2737252 (1956-03-01), Knapp et al.
patent: 2840170 (1958-06-01), Best
patent: 3001588 (1961-09-01), Fischer
patent: 5209640 (1993-05-01), Moriya
patent: 5284418 (1994-02-01), Moriya
patent: 5299911 (1994-04-01), Moriya

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