Accession Number : ADP005782

Title :   A Second Look at MIL Prime Flying Qualities Requirements,

Corporate Author : AIR FORCE WRIGHT AERONAUTICAL LABS WRIGHT-PATTERSON AFB OH

Personal Author(s) : Woodcock, Robert J.

Report Date : MAY 1988

Pagination or Media Count : 15

Abstract : This presentation addresses current and projected applications of flying qualities criteria, rather than their research and development. We will discuss the current state of the art, its deficiencies, and needs for further work. The rationale for the new US Military Standard and Handbook on flying qualities is briefly discussed. With advanced vehicles, the scope of flying qualities is expanding, opening new areas to investigate and creating new problems. With relaxed static stability now commonly used, control margin is a prime safety consideration: control must be available for stabilization, maneuvering and recovery from any possible attitude, as well as the trim. Flying qualities aspects of agility include the need for nonlinear flying qualities metrics, and control systems that provide both rapid maneuvering and good damping for tight tracking. For all-aspect engagement, the pilot needs to be thoroughly integrated with displays, automatic flight control modes and other systems. For dynamic longitudinal flying qualities, MIL-STD-1797 presents the Control Anticipating Parameter (CAP) of an equivalent classical system as a primary criterion, but gives several alternatives in recognition of problems, and research continues. (SDW)

Descriptors :   *FLIGHT CONTROL SYSTEMS, REQUIREMENTS, STATIC STABILITY, STABILIZATION, FLIGHT MANEUVERS, RECOVERY.

Subject Categories : Flight Control and Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE