INVESTIGATION OF LATERAL CONTROL NEAR THE STALL ANALYSIS FOR REQUIRED LONGITUDINAL TRIM CHARACTERISTICS AND DISCUSSION OF DESIGN VARIABLES

摘要

It has been recognized for same time, and shown quantitatively by the results of flight tests, that low-speed lateral control of airplanes may be insured by a simple limitation of the maximum elevator deflection so that the maximum angle of attack maintainable is that which will still allow, satisfactory lateral control characteristics. However, this pro¬cedure places severe requirements on the longitudinal trim characteristics of the airplane, inasmuch as this maximum elevator deflection must be ade¬quate for the range of power settings and center-of-gravity locations encountered in flight. The purpose of this report is to provide the analytical means by which designers may estimate the elevator deflection required to trim in steady longitudinal flight and to demonstrate in a quantitative manner the effects on longitudinal trim of changes in some of the more important design parameters.