The need of artificially generated positive stick force stability for longitudinal flight control systems based on pitch-rate-command/attitude-hold (PRC/AH) has been investigated in two flight test programs using a Beechcraft Queen Air-80 and a Fokker F-28/Mk6000. The main conclusion, based on statistical analysis of performance measures and effort ratings of 120 approaches, is that positive stick force stability reduces airspeed deviations from the reference speed at the cost of increased glide path deviations and increased pilot effort. Only for relatively small levels of positive stick force stability was a modest reduction of airspeed deviation obtained, while glide path tracking and pilot effort were not significantly degraded as compared to the case of neutral stick force stability.
Flight Test of Stick Force Stability in Attitude-Stabilized Aircraft
1977
7 pages
Report
Keine Angabe
Englisch