| 摘要 |
PROBLEM TO BE SOLVED: To provide an autorotation control device, capable of spontaneously controlling autorotation flight from detection of occurrence of engine trouble to safe landing even in case where engine trouble occurs during the flight of a helicopter aircraft to stop a supply of rotation energy to a main rotor. SOLUTION: This device is provided with a change-over part 130 to control for detection of occurrence of engine trouble based on the rotation speed of the main rotor, or change-over of connection to various kinds of control parts, a rotation speed control part 110 connected to the change-over part 130 when occurrence of engine trouble is detected to control the rotation speed of the main rotor to reach a target value, and a lowering speed control part 120 connected to the change-over part 130 when the rotation speed has reached the target value to control lowering speed. The rotation speed control part 110 and the lowering speed control part 120 spontaneously carry out control using various corrective pitch angles obtained based on various model expressions indicating dynamic characteristics of the helicopter aircraft. COPYRIGHT: (C)2007,JPO&INPIT
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