Reversible ducted fan assembly

Details Reversible ducted fan assembly Reversible ducted fan assembly

1975-06-09

1976-10-19

Raduazo, Henry F.

Rotary kinetic fluid motors or pumps

Runner or blade selectively adjustable relative to casing

416127, 416 23, 60226R, F01D 130

Patent

active

039867943

ABSTRACT:
A gas turbine engine of a ducted-fan bypass type includes a fan with a plurality of circumferentially spaced airfoils thereon each including first and second portions thereof defining a forward thrust airfoil having a chord to blade spacing ratio greater than one. Each of the first and second portions are rotatably supported on the fan hub and are movable from a forward thrust position when the trailing edge of the first portion is juxtaposed against the leading edge of the second portion to a reverse thrust position wherein the first and second portions are corotated so as to locate the leading edge of the first portion in juxtaposed relationship to the trailing edge of a second portion to define a reverse thrust airfoil for producing a reverse flow of air through the fan duct passage with a resultant reverse thrust action on the gas turbine engine.

REFERENCES:
patent: 2982361 (1961-05-01), Rosen

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