Accession Number : ADA325976

Title :   V/STOL Equivalent Systems Analysis.

Descriptive Note : Final rept. 27 Aug 79-27 May 80,

Corporate Author : MCDONNELL AIRCRAFT CO ST LOUIS MO

Personal Author(s) : Carpenter, Carl G. ; Hodgkinson, John

PDF Url : ADA325976

Report Date : MAY 1980

Pagination or Media Count : 225

Abstract : A fixed base manned V/STOL handling qualities simulation was performed to answer questions concerning: (a) the pilot's frequency range of interest, (b) the maximum allowable mismatch between high order systems and their low order equivalents, (c) acceptability of high order appearing responses and (d) the piloting effects of phase lag at the natural frequency versus time delay. Various high or low frequency terms were added to low order attitude systems. Pilot ratings and comments showed that the pilot's frequency range of interest was .5-4.0 rad/sec; the amount of mismatch allowed was dependent on the type of high order dynamics added and the match frequency range; pilots did not accept high order appearing dynamics and; time delay is a better correlating parameter than phase lag at the configuration natural frequency. Equivalent systems analysis established criteria for the different flying qualities levels in terms of equivalent parameters.

Descriptors :   *VERTICAL TAKEOFF AIRCRAFT, *SHORT TAKEOFF AIRCRAFT, HIGH FREQUENCY, ATTITUDE CONTROL SYSTEMS, COCKPITS, PILOTS, CONFIGURATIONS, RATINGS, FLIGHT SIMULATORS.

Subject Categories : V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE