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


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a181475.pdf


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