Analysis of VTOL Handling Qualities Requirements. Part 2. Lateral-Directional Hover and Transition
Final rept. Jul 1968-Jan 1970
SYSTEMS TECHNOLOGY INC HAWTHORNE CA
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Analyses of available handling qualities data were performed to determine lateraldirectional dynamic requirements for VTOL aircraft in hover and low speed flight. The basis for this treatment is an examination of the pilotvehicle as a closed-loop servo system. The quasi-linear pilot describing function is applied. The results of the studies suggest that the primary factors identifying satisfactory and unacceptable hover mode dynamic features are related to the closed-loop deficiencies. Detailed consideration is made of the control task and piloting functions in transition flight. The results of this generic appraisal are evoked to confirm and justify preliminary lateral directional requirement for control in transition.