Accession Number : ADD005237

Title :   Rotor Hub for a Helicopter.

Descriptive Note : Patent Application,


Personal Author(s) : McCoubrey,George A

Report Date : 12 Jul 1978

Pagination or Media Count : 12

Abstract : This document describes a rotor hub for a helicopter having a hub member rotatably mounted to a rotor mast stationarily attached to the fuselage of a helicopter and forming an air plenum for circulation control. A shaft, which is driven from a transmission, drives a torque plate which is attached to the top of the hub member. A flexible hub plate is attached to a flange on the hub member and has a plurality of axles to which the rotor blades are individually attached. Air from inside the plenum is piped to the rotor blades through flexible ducts. The flexible hub plate is designed to provide a high degree of stiffness in the plane of rotation and a lesser degree of stiffness in a plane normal to the plane of rotation. (Author)

Descriptors :   *Patent applications, *Helicopter rotors, *Hubs, Control, Circulation, Pneumatic actuators, High velocity, Lift

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE