| 摘要 |
<p>A compound helicopter drawings has wings in addition to a helicopter rotor and has twin power plants each including a low pressure compressor, a gas generator, a power turbine driven by the gas generator and connected through a gearbox to drive the helicopter rotor, and a variable area final propulsion nozzle which receives the exhaust from the power turbine. Augmenter wing flaps are provided on the wings and fed with air from the low pressure compressor for providing additional lift and thrust from the wings. The flaps are pivotal mounted on the trailing edge of the wing and are movable to a position where the trailing edges of the flaps obturate the flow through the gap between the flaps. In this position the flaps provide a means of decelerating the forward speed of the aircraft.</p> |
