Accession Number : ADA181475

Title :   Experimental Investigation of the Short-Period Requirements of MIL-F-8785C. Volume 2.

Descriptive Note : Interim rept. Jun 84-Dec 85,

Corporate Author : ARVIN/CALSPAN ADVANCED TECHNOLOGY CENTER BUFFALO NY

Personal Author(s) : Bailey,Randall E

PDF Url : ADA181475

Report Date : Nov 1986

Pagination or Media Count : 211

Abstract : An investigation of the short period frequency requirements of MIL-F-8785C was performed using the USAF/TIFS in-flight simulator. Thirty-five evaluations of eighteen configuration were conducted. The experiment examined the minimum frequency boundary at three values of alpha for one true airspeed. The experiment included the effects of pilot location and evaluation task. The data indicate that the current requirement is essentially valid. The minimum acceptable frequency boundary may be relaxed, however, when the pilot station is forward of the center of rotation. Also, the phasing between the normal acceleration and pitch rate responses has been shown to be a critical determinant of longitudinal short period flying qualities. The results are analyzed also using the equivalent systems methodology. Keywords: Handling qualities; Flight control system; Equivalent system; Aircraft;

Descriptors :   *PILOTS, *FLIGHT CONTROL SYSTEMS, *MAN MACHINE SYSTEMS, AIRCRAFT, METHODOLOGY, BOUNDARIES, FREQUENCY, INFLIGHT, SIMULATORS, AIRSPEED, PITCH(MOTION), RATES, RESPONSE, HANDLING, QUALITY, ACCELERATION, STATIONS, REQUIREMENTS, SHORT RANGE(TIME), AERODYNAMIC FORCES, FLIGHT SIMULATORS, TRANSPORT AIRCRAFT, CUES(STIMULI), INSTRUMENT PANELS

Subject Categories : Flight Control and Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE