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CONTROL STRATEGY AND DESIRED CONTROL CHARACTERISTICS
EQUATIONS OF MOTION FOR HOVER AND FORWARD FLIGHT
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acceleration achieve aerodynamic aircraft attitude aircraft's response airspeed response angle of attack bandwidth bank angle Bode plot characteristic roots closed-loop command system complex pair constant control augmentation control sensitivity criteria damping ratio display Dutch roll dynamics equations example feedback first-order flight director flightpath and airspeed flightpath angle flightpath response flying qualities forward flight ft/sec/rad gain ground effect Harrier at 100 Harrier in hover knots lateral control lateral velocity lateral-directional lead compensation Level lift locus and Bode longitudinal velocity loop closure low-frequency magnitude numerator root open-loop performance phase margin phugoid pilot pitch attitude pitch control position propulsion system rad/ft-sec rad/sec rad/sec2/in ratio Real Axis reference roll mode root locus shown in figure sideslip speed stability derivatives steady-state STOVL takeoff task thrust deflection thrust vector transfer function turbulence typically unstable V/STOL aircraft velocity control velocity response vertical velocity damping yaw control yaw rate