Accession Number : ADP006869

Title :   Initial Validation of an R and D Simulator with Large Amplitude Motion,

Corporate Author : DEFENCE RESEARCH AGENCY BEDFORD (UNITED KINGDOM) FLIGHT SYSTEMS DEPT

Personal Author(s) : White, A. D. ; Hall, J. R. ; Tomlinson, B. N.

Report Date : FEB 1992

Pagination or Media Count : 24

Abstract : The Advanced Flight Simulator (AFS) Complex at DRA Bedford has been enhanced by the addition of a large displacement motion platform and a three channel Computer Generated Image (CGI) outside world visual system. The trial described in this report was the first in a series of trials aimed at validating the AFS in its present configuration and in particular at demonstrating its ability to address a wide range of vehicle handling qualities with a high degree of fidelity and user confidence. It included a direct comparison between the ground-based AFS and the Calspan Learjet in-flight simulator. The comparison between AFS and Learjet involved three pilots flying the same offset approach landing tasks using the same aircraft model in both the AFS and in flight. The lateral handling qualities were varied by adjusting the time constant of a filter in the pilot's roll control loop. Pilot comments, handling quality and PIO ratings indicate that the AFS reproduces the lateral handling qualities and roll PIO tendencies of the Learjet in-flight simulator with high fidelity. The degradation in handling qualities and increase in PIO tendencies with increasing filter time constant were clearly revealed in both the AFS and Learjet. The importance of good platform motion cueing and task design when evaluating handling qualities was also demonstrated.

Descriptors :   *FLIGHT SIMULATION, *MILITARY AIRCRAFT, COMPUTER AIDED DESIGN, FLY BY WIRE CONTROL, PILOTS, COCKPITS, TEST AND EVALUATION.

Subject Categories : Military Aircraft Operations
      Aircraft

Distribution Statement : APPROVED FOR PUBLIC RELEASE