Preliminary Test Results for Stability and Control Characteristics of a Generic T-Tail Transport Airplane at High Angle of Attack

Cunningham, Kevin ; Shah, Gautam H ; Frink, Neal T ; McMillin, Susan N ; Murphy, Patrick C ; Brown, Frank R ; Hayes, Patrick J ; Shweyk, Kamal M ; Nayani, Sudheer N

关键词: AERODYNAMIC CHARACTERISTICS;    ANGLE OF ATTACK;    COMPUTATIONAL FLUID DYNAMICS;    DYNAMIC STABILITY;    FLOW VISUALIZATION;    TRANSPORT AIRCRAFT;    ASYMMETRY;    CONTROLLABILITY;    DYNAMIC TESTS;    HYSTERESIS;    REYNOLDS NUMBER;    WATER TUNNEL TESTS;   

RP-ID  :  NF1676L-27400

学科分类：航空航天科学

美国|英语

来源: NASA Technical Reports Server

【 摘 要 】

Tests of a generic T-tail transport airplane, in flaps-up configuration, were conducted using two wind tunnels, a water tunnel, and computational fluid dynamics. Static force and moment testing, forced oscillation testing and dye flow visualization test techniques were used. The purpose of the testing was to obtain stability and control characteristics for development of a research flight simulator aerodynamic database. The purpose of that database was for assessment of aerodynamic model fidelity requirements to train airline pilots to recognize and recover from full stall conditions. Preliminary results, at initial stall conditions, include: an unstable stall pitch break, and near-neutral roll damping. Preliminary results, at deep stall conditions, include: a potential static longitudinal trim condition at approximately 35 degrees angle of attack, large aerodynamic asymmetries, and localized unstable dynamic stability.