Load rejection releasing mechanism

The invention discloses a load rejection releasing mechanism. The load rejection releasing mechanism is capable of realizing the emergency load rejection, floating and recovery of unmanned autonomousaircrafts such as an underwater glider and the like, and is simple in structure, reliable in action and large in load rejection weight. The load rejection releasing mechanism comprises releasing components and execute components, wherein the execute components comprise a linear motor, a rack and a gear; the releasing components comprise a base, an angle sensor and a release rotating shaft; when anunmanned autonomous aircraft fails, a control center gives a load rejection command, the linear motor acts and pushes the rack to drive the gear to rotate, the gear drives the release rotating shaftto rotate, the angle sensor detects a rotation angle of the release rotating shaft during the rotation of the release rotating shaft, the release rotating shaft stops to rotate after rotates 90 degrees, at the moment, the relea