Rotor diameter indicator

Details Rotor diameter indicator Rotor diameter indicator

1975-11-05

1977-02-15

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

With measuring, testing, signalling or inspection means

416 89, B64C 1128

Patent

active

040079970

ABSTRACT:
A variable length blade in telescopic form adapted to be used with similar blades to form a variable diameter rotor or propeller wherein the outer blade portion, at the will of the pilot, is caused to telescope with respect to the inner blade portion by jackscrew action and means are provided for limiting the extending and retracting movements of the blades and also for providing a continuing visual indication of the diameter of the rotor.

REFERENCES:
patent: 2381991 (1945-08-01), Symons
patent: 2403899 (1946-07-01), Ammen
patent: 2485245 (1949-10-01), Schoenbaum
patent: 3297094 (1967-01-01), Kisovec
patent: 3501248 (1970-03-01), Brocker
patent: 3713751 (1973-01-01), Fradenburgh et al.
patent: 3768923 (1973-10-01), Fradenburgh
patent: 3814351 (1974-06-01), Bielawa

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