Investigation of an automatic spin prevention system for fighter airplanes

Abstract TECH LIBRARY KAFB, NM I. Illill __ I -.. lllll lllll lllll lllll Ill11 Ill1 Ill 01133882 5. Report Date March 1972 6. Performing Organization Code 8. Organization Report No. L-8112 10. Work Unit No. 136-62-02-03 11. Contract or Grant No. 13. Type of Report and Period Covered I Technical Note 14. Sponsoring Agency Code An investigation has been conducted to eva-Jate the effectiveness of an automatic spin-prevention system for current fighter airplanes as a first step in determining the feasibility of such a system. The concept makes use of the components of the conventional flight-control system with the addition of control logic to monitor angle of attack, yaw rate, and normal acceleration. Analytical techniques were used to study the system concept applied to three representative fighter configurations; and model flight tests were employed to eval­uate a prototype system on a representative fighter configuration. Emphasis was placed on the development of the control logic required.. A discussion of possible implementations of the system concept is presented. Results of the investigation indicated that