4 pages matching shrouded fan in this book
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32 knots adverse yaw Airfoil altitude angle of attack auto rotation autorotation blade pitch brief flight investigation collective pitch control inputs control positions conventional tail rotor cruise flight dihedral effect directional control directional stability directional unsteadiness disk loading ducted fan Effects of wind fan diameter fan in fin fan in forward fan thrust fan-in-fin configuration fan-in-fin yaw control Fenestron figure fin force fixed-wing aircraft forward flight forward speed ground effect ground proximity hovering and low-speed hovering flight indicated airspeed Langley Research Center large vertical fin left pedal main rotor torque meters NACA pedal position percent Pilot comment indicated right crosswind right pedal rotor speed shaft power shrouded fan sideslip angles static stability tail-fan power required tail-fan thrust test helicopter total travel trim-level-flight airspeed U. S. Army U.S. Army unload the fan values of tail-fan vertical velocity wind direction YAW CONTROL CONCEPT yaw control system yaw excursion