An unlocking device and its application in spacecraft landing stability test

Abstract

The invention provides an unlocking device and its application in a spacecraft landing stability test, belonging to the design field of spacecraft ground landing test devices. The unlocking device includes a side plate, a lock hook, a first elastic member, a push rod and a power assembly, wherein the push rod and the lock hook are respectively hinged on the side plate, one end of the first elastic member is connected to the lock hook, and the other end is connected to the side plate. Plate connection, the lock hook is provided with a limit protrusion, and the power component is arranged on the side plate. When locked, the second end of the push rod is located at the limit protrusion, so that the lock hook is in the first position. When released, The power assembly drives the push rod to rotate, so that the second end is separated from the position-limiting protrusion, and the lock hook is separated from the first position under the contraction or pressing force of the first elastic member. The structure improves the safety and reliability of the unlocking and separation of the fixed rope, and reduces the disturbance of the landing attitude of the spacecraft caused by the separation of the fixed rope; the unlocking device can be used repeatedly, which greatly reduces the test cost.

Description

technical field [0001] The invention belongs to the design field of a spacecraft ground landing test device, and relates to an unlocking device and its application in a spacecraft landing stability test. Background technique [0002] In recent years, with the advancement of manned moon landing, Mars and other exploration projects, the simulation test technology of spacecraft soft landing process has developed rapidly, and the frequency of spacecraft landing stability tests has increased day by day. [0003] In the current spacecraft landing stability test, the spacecraft is separated from the fixed rope through the unlocking device, so as to swing with the pendulum rope. At present, the commonly used unlocking device is a pyrotechnic device, which is wirelessly controlled by triggering a photoelectric sensor to disconnect the fixed rope. [0004] Due to the general weight of the spacecraft, this method brings about the problems of limited load capacity of the pyrotechnic un...

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Problems solved by technology

[0004] Due to the general weight of the spacecraft, this method brings about the problems of limited load capacity of the pyrotechnic unlocking device, single-use non-reusable, increased test costs, and the disturbance of the pendulum rope when the pyrotechnic device is in motion, which affects the landing attitude of the spacecraft. and test safety issues, etc.

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