| 摘要 |
<p>The present invention provides a vertical takeoff and landing aircraft vehicle in which a ducted fan (3) with upwardly directed inlet (11) discharges air generally horizontally across a segmented circular wing (6). Said wing segments are individually controllable in pitch and each includes a spoiler (10) and split flaps (29,30) to increase effectiveness and sensitivity in lifting and controlling the aircraft. Directional stability and thrust for horizontal movement is provided by controls directing different proportions of total airflow to the various segments around the aircraft and varying the direction of said airflow both radially and vertically. Power failure protection is provided by means for maintaining free rotation of the fan until needed to provide lift at touchdown. <IMAGE></p> |
