Accession Number : ADA319984

Title :   Volume II. Flying Qualities Phase. Chapter 14: Flight Control Systems.

Corporate Author : AIR FORCE TEST PILOT SCHOOL EDWARDS AFB CA

PDF Url : ADA319984

Report Date : DEC 1988

Pagination or Media Count : 311

Abstract : The study of flight control systems is of central importance in the design and flight test of modern aircraft. Increasingly these aircraft are designed with performance considerations only and sophisticated flight control systems are required to correct a host of handling qualities deficiencies. Today's complex control systems are comprised of various elements, washout filters, prefilters, sensors, electronic compensators and structural filters, in full authority fly-by-wire systems. The purpose of this course is to provide a fundamental understanding of the basic types of aircraft control strategies. Simple mechanical systems are presented including the effect of control system elements, such as actuators, artificial feel systems, and mechanical elements. Stability and control augmentation systems are then discussed, stressing the advantages and disadvantages of each type of feedback commonly used. Electronic compensators are studied as further refinements to the augmented system. Modern analog and digital electronic flight control systems are then analyzed to gain an appreciation for their operation and potential handling qualities deficiencies. In addition, automatic flight control systems are discussed including both autopilots and the more sophisticated integrated systems for automated maneuvering. Aircraft sensors used in most of these flight control systems are also analyzed. Finally, flight control system test techniques are presented.

Descriptors :   *FLIGHT CONTROL SYSTEMS, MANEUVERABILITY, PITCH(MOTION), AERODYNAMIC STABILITY, DAMPING, ANGLE OF ATTACK, FEEDBACK, AERODYNAMIC LOADING, FLIGHT MANEUVERS, AIRCRAFT MODELS, AUTOMATIC PILOTS, FLY BY WIRE CONTROL, ELEVATORS, TRIM(AERODYNAMICS), AIRCRAFT DESIGN.

Subject Categories : Flight Control and Instrumentation
      Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE