Accession Number : ADD007874

Title :   Reverse Velocity Rotor System for Rotorcraft.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Verrill,Thomas D ; Ewans,John R

Report Date : 14 Oct 1980

Pagination or Media Count : 7

Abstract : A blade control method and means for helicopter rotors which increases helicopter speed by mixing two/rev. control motion with one/rev. cyclic and collective motion through mechanical summation is provided. Both rotary and vertical motions are imparted to an inner control shaft and these motions are combined to impart vertical oscillatory motions to the rotor head which motions increase the thrust developed by the helicopter rotor. (Author)

Descriptors :   *Patents, *Rotor blades(Rotary wings), *Helicopter rotors, Helicopters, Rotary wing aircraft, Pitch(Motion), Lift, Thrust, Motion, Oscillation, Rotation, Shafts(Machine elements), Vertical orientation

Subject Categories : Helicopters

Distribution Statement : APPROVED FOR PUBLIC RELEASE