Aircraft propeller assembly with blade pitch reset for ground id

Fluid reaction surfaces (i.e. – impellers) – With control means responsive to non-cyclic condition... – Impeller rotation speed responsive

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416 48, 416 49, B64C 1140

Patent

active

049041576

ABSTRACT:
An aircraft propeller has adjustable pitch blades which are reset from a low pitch in-flight idle position to a lower pitch ground idle position by a beta feedback and reset mechanism. The reset mechanism includes a set of cam elements supported for movement in response to rotation of the blades and positioned to engage a follower plate adjustably mounted on the beta feedback control rods.

REFERENCES:
patent: 2694459 (1954-11-01), Biermann
patent: 3167131 (1965-01-01), Voisard
patent: 3249159 (1966-05-01), Biermann
patent: 3261405 (1966-07-01), Andrews
patent: 3380535 (1968-04-01), Biermann
patent: 3389640 (1968-06-01), Best et al.
patent: 3551069 (1970-12-01), Morris
patent: 3575529 (1971-04-01), Biermann
patent: 4097189 (1978-06-01), Harlamert
patent: 4648798 (1987-03-01), Voisard
patent: 4650402 (1987-03-01), Jones, Jr. et al.

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