Arrangement for adjusting the rotor blades of a propfan turbopro

Details Arrangement for adjusting the rotor blades of a propfan turbopro Arrangement for adjusting the rotor blades of a propfan turbopro

1989-11-08

1991-07-02

Look, Edward K.

Fluid reaction surfaces (i.e., impellers)

Plural impellers having relative movement or independent...

Coaxial rotation

416157A, 416157B, B64C 1100, B64C 2700

Patent

active

050282077

ABSTRACT:
An arrangement for the adjusting of rotor blades of a propfan turboprop engine equipped with two counter-rotating propfan rotors has a number of double-toothed planet wheels which are fastened in a rotatably disposed web. The web is supported on the side of the housing by planet members disposed on one of the propfan rotors. The two toothings of the planet wheels are in operative connection with ball spindle adjusting rings. Using an adjusting motor, a relative movement of the web can be achieved with respect to the housing, whereby the blades of two counter-rotating rotor blade rings can be swivelled. According to the invention, an adjustment of rotor blades will also be possible when no stationary housing parts are available for the support.

REFERENCES:
patent: 1042980 (1912-10-01), Shawver
patent: 2297214 (1942-09-01), Gosslau
patent: 2380889 (1945-07-01), Waseige
patent: 2394299 (1946-02-01), Friedrich
patent: 2455239 (1948-11-01), Doussain
patent: 2948343 (1960-08-01), Conn et al.
patent: 3153907 (1964-10-01), Griffith
patent: 4738261 (1988-03-01), Wright et al.
patent: 4738589 (1988-04-01), Wright
patent: 4842484 (1989-06-01), Johnson

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