Accession Number : ADD003302
Title : Circulation Controlled Rotary Wing Aircraft and Control System Therefor.
Descriptive Note : Patent,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C
Personal Author(s) : Danielson,Henry C
Report Date : 09 Nov 1976
Pagination or Media Count : 5
Abstract : The patent relates to a control system for rotary wing aircraft having a circulation controlled rotor. Two axial flow air compressors driven from the engine input shaft provide an air flow which is ducted to the rotor blades through a bifurcated duct and a non-rotating air plenum and released through spanwise slots in the blades. Damping is accomplished by a conically shaped diverter valve in the air plenum and a butterfly valve adjacent the air compressors. Aircraft stability is achieved through a gyro coupled to the rotor shaft which integrates pilot controlled input with rotor cyclic flap moment input.
Descriptors : *Helicopter rotors, *Control systems, *Patents, Damping, Compressed air, Ducts, Axial flow compressors
Subject Categories : Helicopters
Distribution Statement : APPROVED FOR PUBLIC RELEASE