Engineering topics
Publications and source records attributed to Jenkins, J. L., Jr..
Equations for analyzing the potential gust-induced overspeed tendency of helicopter rotors are presented. A parametric analysis was also carried out to illustrate the sensitivity of rotor angular acceleration to changes in rotor lift, propulsive force, tip speed, and forward velocity.
Rotor systems research aircraft vehicles, (RSRA), were developed specifically to provide the capabilities necessary for the effective and efficient in-flight test and verification of promising new rotor concepts and supporting technology developments. The capabilities of the RSRA aircraft for potential research programs are discussed.
Systems analysis of directional control, rotary wing vibratory loads, lift sharing, and fuselage vibration and damping during helicopter maneuvers
Flight tests on hingeless rotor compound helicopter to determine level flight and maneuvering characteristics
Numerical solution of coupled, nonlinear, equation of motion for rigid blade to simulate response sensitivity and blade-motion stability of fully articulated rotor
NASA flight test of hingeless rotor compound helicopter to determine lift sharing characteristics, showing rotor lift dependence on airspeed
Articulated rotor blade motion stability, numerically analyzing effect of initial disturbances on tip speed ratio for divergence and effects of restraints
Lift sharing characteristics of wing and rotor of Army Lockheed hingeless rotor compound helicopter at various airspeeds in level and maneuvering flight
Analysis of blade-motion stability and tip speed ratio for articulated rotor
Flight investigations of wing-rotor lift-sharing characteristics of XH-51 helicopter
Numerical method for determining transient blade motions of rotor with flapping and lead-lag degrees of freedom
Wind-tunnel tests of helicopter rotor stall
Wind-tunnel tests of helicopter-rotor stall
Wind tunnel testing of helicopter rotor operating at extreme thrust coefficients and high-tip-speed ratios
Longitudinal aerodynamic characteristics of two full-scale helicopter fuselage models