Foldable counter-rotating propfan blades

Details Foldable counter-rotating propfan blades Foldable counter-rotating propfan blades

1989-02-02

1990-06-26

Peters, Jr., Joseph F.

Aeronautics and astronautics

Aircraft propulsion

Screw

416129, 416142, 60268, 244 53R, B64C 1146

Patent

active

049365266

ABSTRACT:
An unducted turbofan engine comprises first and second fan blades journaled for rotation from a folded position substantially parallel to the axis of rotation of the engine to a radially orientated propulsion condition. A releasable shroud normally retains the fan blades in the folded condition and releases the fan blades in a controlled sequence.

REFERENCES:
patent: 2478206 (1949-08-01), Redding
patent: 2955656 (1960-10-01), Balje et al.
patent: 3811791 (1974-05-01), Cotton
patent: 3957229 (1976-05-01), Davis

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