External electric folding landing mechanism

Abstract

The invention provides an external electric folding soft landing mechanism. The external electric folding soft landing mechanism comprises at least three groups of the same supporting mechanisms arranged on a vehicle body, each of the supporting mechanism groups comprises a damping post and a landing leg, wherein the damping post comprises an electric transmission mechanism and a hydraulic damping device; the electric transmission mechanism comprises a motor, a bearing, a lead screw and a plurality of stage transmission sleeves which are sequentially nested; the hydraulic damping device comprises a spiral fastening device, a piston rod, a piston head, a buffer outer cylinder and a sealing device. The landing mechanism disclosed by the invention is suitable for repeated use in perpendicular ascending and descending, and is stuck to the outer surface of the vehicle under a folding state, so that the aerodynamic influence on the vehicle is reduced, and the folding rigidity is good; when the landing mechanism disclosed by the invention is under an unfolding state, the supporting area is large, and the bearing capacity is strong; the landing mechanism disclosed by the invention has the characteristics of light in weight, simple in preparation technology, smooth in buffering process, free from rebounding during processes, and high in buffering efficiency, and can be repeatedly utilized; a protrusion structure of a mechanism casing can also achieve the effect that a rocket empennage is aerodynamically stabilized.

Description

technical field [0001] The invention relates to the technical field of vertical take-off and landing reusable devices, in particular to an external electric retractable landing mechanism. Background technique [0002] The vertical take-off and landing reusable carrier is based on mature carrier rocket technology, and a landing device is added to realize the vertical recovery of the carrier. Reusable, vertical take-off and landing reusable vehicles are less difficult to develop, ground operations and equipment are greatly simplified, and the cost of a single flight is lower, which is an important direction for the development of vehicles. The landing mechanism is the key and core component of the vertical landing and recovery of the vehicle, which provides support for the stable landing of the vehicle on the recovery plane, and can be stowed before the next launch to achieve reuse. [0003] The U.S. "Mercury" spacecraft and the "Mars Explorer" landing module used airbag-type...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide an external electric retractable landing mechanism to solve the problem that the attitude of the existing landing mechanism is not suitable for control, cannot meet the aerodynamic requirements of the vertical take-off and landing reusable carrier, the recovery of the carrier is too expensive or limited buffer capacity

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