Deployable rotor

Details Deployable rotor Deployable rotor

1977-01-31

1978-12-26

Powell, Jr., Everette A.

Fluid reaction surfaces (i.e., impellers)

Working member foldable, pivotable or collapsible to non-use...

416140, B64C 1128, B64C 2750

Patent

active

041313925

ABSTRACT:
A deployable stowed rotor having a rotor hub to which a pair of telescoping otor blades are connected is foldable into a package suitable for stowage prior to use. When the rotor is deployed, for example, as a lifting device for an ejection seat, positive preconing of the blades is provided by a spreading link arrangement connected to a drogue chute. Further coning during rotor spin-up is synchronized by intermeshed gears provided at respective one ends of the blades attached to the hub by teeter link hinges. Rotor speed is automatically regulated by a governing spring formed in conjunction with a helical spline arrangement between each of the blades and the hub and which varies the pitch of the spinning blades according to rotational velocity.

REFERENCES:
patent: 2500382 (1950-03-01), Rowley
patent: 3016217 (1962-01-01), Polleys et al.
patent: 3194519 (1965-07-01), Rhodes
patent: 3246864 (1966-04-01), Mack et al.
patent: 3321021 (1967-05-01), Girard
patent: 3428271 (1969-02-01), Hollrock et al.
patent: 3838940 (1974-10-01), Hollrock
patent: 4017043 (1977-04-01), Barzda
patent: 4028001 (1977-06-01), Watson

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