Accession Number : ADA136291

Title :   A Pilot/Vehicle Model Analysis of the Effects of Motion Cues on Harrier Control Tasks.

Descriptive Note : Final rept. Mar 81-Mar 82,


Personal Author(s) : Baron,S

PDF Url : ADA136291

Report Date : Sep 1983

Pagination or Media Count : 40

Abstract : In this study, the results of an analytical investigation of pilot control of a simulated AV-8B (Harrier) aircraft are presented. The analysis was performed using a well-established pilot-vehicle model, namely, the Optimal Control Model. The effects on closed-loop performance of aircraft configuration (SAS-ON or SAS-OFF) and flight condition (hover or cruise) and of simulator motion cueing condition (fixed-base, moving platform or g-seat) were all analyzed. In addition, the interaction between these conditions and the level of pilot attention and/or skill (or training) was investigated by means of a sensitivity analysis in which we systematically varied a parameter of the OCM (the observation noise/signal ratio) which can be related to these pilot factors. The results indicate that motion cues could be very significant in the Harrier hover control task for the augmented (SAS-OFF) vehicle. For hover with the SAS-ON and for cruise flight, motion cues are predicted to be, at best, of marginal utility for improving performance. The model results suggest that motion cues may be provided for these tasks by a g-seat with little loss in performance as compared to using platform motion. However, the assumptions underlying the g-seat analysis have not been verified experimentally. (Author)

Descriptors :   *Flight control systems, Flight simulation, Motion, Cueing, Closed loop systems, Vertical takeoff aircraft, Hovering

Subject Categories : V/STOL

Distribution Statement : APPROVED FOR PUBLIC RELEASE