National Aerospace Laboratory Control Systems Division
National Aerospace Laboratory Control Systems Division
National Aerospace Laboratory Control Systems Division
National Aerospace Laboratory Control Systems Division
National Aerospace Laboratory Control Systems Division
出版者
航空宇宙技術研究所
出版者(英)
National Aerospace Laboratory (NAL)
雑誌名
航空宇宙技術研究所資料
雑誌名(英)
Technical Memorandum of National Aerospace Laboratory
A flight simulation was conducted to investigate the relationship between visibility and helicopter pilot performance. For this purpose, a fixed-base helicopter simulator with a two-channel computer generated visual system was prepared, where the stability derivatives of BO-105 model were utilized. Pilot tasks were to perform a hover and to follow a traffic pattern around a simulated airport under three levels of visibility; clear, 3.0 km range, and 0.5 km range. In addition to flight data and pilot comments, tracking eye fixation point data were obtained. Results of the power spectral analysis of control stick movements showed that the visibility affected the lateral cyclic control most significantly during level flight. The eye fixation point data revealed that the pilot derived visual cues for attitude control from the attitude indicator in the case of low visibility. It also became apparent from the pilot comments and other results that the simulator could not provide sufficient information for low altitude maneuvers.