| 摘要 |
<p>By mounting a lift engine (4) and a lift/cruise engine (6) closely to the center of gravity (C.G.) of an aircraft (2) and by orienting the respective engines (4, 6) such that the thrust axes thereof are arranged for ensuring that the vector sum of the lift engine thrust and the lift/cruise engine thrust pass through the center of gravity at all times, a fuel efficient aircraft (2) can controllably takeoff and land vertically. To provide for vectoring the thrust of the respective engine, different nozzles (16, 36) are provided. Further, to provide for pitch, roll and yaw control, a vane assembly (24) is coupled to the aircraft in such a way that it remains in alignment to the jet stream of the lift engine (4).</p> |
