Accession Number : ADD006747

Title :   Compensating Structure for Circulation Control Rotor Pneumatic Valve.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : McCoubrey,George A

Report Date : 11 Jul 1979

Pagination or Media Count : 15

Abstract : This invention relates to structure for minimizing gap changes in a circulation control pneumatic valve. A flat, flexible ring is located below and adjacent to the plane of the nozzle of blade ducts. The flat, flexible ring is supported from beneath by an array of actuators. In one embodiment, the nozzles are immobilized relative to hub-induced displacements and thus eliminate any feedback due to hub flexing. In another embodiment, the nozzle is pivotally attached to a rotating carrier and feedback is reversed so that feedback becomes negative. (Author)

Descriptors :   *Patent applications, *Pneumatic valves, *Helicopters, Feedback, Inventions, Ducts, Rotor blades(Rotary wings), Air, Nozzles, Actuators

Subject Categories : Helicopters
      Pumps, Filters, Pipes, Tubing, Fittings & Vlvs

Distribution Statement : APPROVED FOR PUBLIC RELEASE