| 摘要 |
<p>Flight control actuation systems are typically provided with inertial motors having high speed rotating parts that are difficult to stop. The use of an unidirectional high gain brake arrangement that includes in combination a shaft (11) mounted for rotation within a housing (16) has been found to aid in stopping the actuation system when it has reached its maximum travel. The shaft is rotatable in either direction. A brake (25) is selectively releasably coupled to the housing and to the shaft. The brake has a first member (45). An intermittent motion device (60) is respectively coupled through the first member to the housing and through a one-way clutch (25) to the shaft. The brake also has a second member (42) that is mechanically coupled to the first brake member and to the housing. The intermittent motion device causes the brake to be activated by movement imparted to the first brake member after a preset number of revolutions of the shaft in one direction. The brake is released by rotation of the shaft in an opposite direction whereby torque transmitted through the one-way clutch to the first brake member is removed. </p> |
