FLIGHT INVESTIGATION OF PILOT'S ABILITYnTO CONTROL AN AIRPLANE HAVING POSITIVE AND NEGATIVEnSTATIC LONGITUDINAL STABILITY COUPLED WITH VARIOUSnEFFECTIVE LIFT-CURVE SLOPES

摘要

A flight investigation was made of an airplane having an automatic control system capable of varying static longitudinal stability and liftcurve slope. The control system operated wing flaps which were geared to a portion of the elevator and produced a variation in both the static stability and lift-curve slope of the airplane. The ability of human pilots to control the variable-stability airplane without the aid of stability augmentation wa6 investigated at various values of positive and negative static stability and lift-curve slope.