Deployable rotor

Details Deployable rotor Deployable rotor

1976-03-08

1977-04-12

Blix, Trygve M.

Aeronautics and astronautics

Safety lowering devices

244122A, 244141, 416142, B64D 1902

Patent

active

040170438

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: 3662978 (1972-05-01), Hollrock
patent: 3838940 (1974-10-01), Hollrock

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