A Survey of Nonuniform Inflow Models for Rotorcraft Flight Dynamics and Control ApplicationsNational Aeronautics and Space Administration, Ames Research Center, 1989 - Ground-cushion phenomenon |
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Aerodynamics Airloads Ames Research Center angle of attack Autogyro azimuthal positions Blade pitch Blake/White model CAMRAD Coleman correlation cosine component Curtiss developed disc-load distribution Drees dynamic inflow model dynamics and control first-harmonic inflow models flight conditions flight regime flight speed flight test Forum AHS FREE WAKE free-wake methods gain matrix Glauert ground effect Ground-induced interference velocity harmonic inflow models Harris Helicopter Rotor Heyson Hingeless Rotor hover INDUCED INFLOW RATIO induced-velocity INFLOW ANGLE ERROR inflow components inflow dynamics Landgrebe lateral flapping lifting rotor longitudinal plane low advance ratios low-speed mean induced velocity Moffett Field momentum theory NASA nonuniform inflow model normalized Peters Pitt/Peters r/R Figure radial roll-up rotor blade rotor disc Rotor in Forward rotor wake shown in Fig simple first-harmonic inflow simple vortex theory simulation test data TPP angle Vertica vertical flight Wake Geometry wake model wake skew angle WAKE UTRC wind tunnel