Accession Number : ADD004041

Title :   Deployable Rotor.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Barzda,Justin J

Report Date : 12 Apr 1977

Pagination or Media Count : 10

Abstract : The patent describes a deployable stowed rotor having a rotor hub to which a pair of telescoping rotor 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.

Descriptors :   *Patents, *Telescoping rotors, *Lift fans, *Ejection seats, Deployment, Folding, Descent trajectories, Deceleration, Actuation

Subject Categories : Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE