Design and Deployment Control of Landing Leg for a Vertical Takeoff and Landing Vehicle

doi:10.3901/JME.2020.19.171

Abstract

Abstract: At present, realizing the reusability of vertical takeoff and landing vehicles is one of the effective ways to reduce launch cost. When the carrier returns to the landing site, it relies on the cooperation of deployment, locking and buffering that absorbs energy of the landing support mechanism, offering a smooth and soft landing. Aiming at devising a landing support mechanism of carrier, a six-bar support mechanism configuration is presented that can realize the unfolding and closing action via four-bar linkage mechanism, achieve the locking action by using double locking mechanism type, and complete one-way movement according to the self-locking principle of the mechanism. Two deployment strategies including the active-following mode and the entire active mode are proposed by virtue of analyzing the full stride of the deployment. The optimizations of the two deployment motion control strategies are implemented based on the dynamics modeling of the deployment process of the landing support mechanism. The scheme of deployment is ultimately determined through the comprehensive comparison among different control modes, which can provide technical support for the development and deployment control of carrier support mechanism.

Key words: carrier recovery, structural design, dynamics, deployment control

CLC Number:

V423

TIAN Baolin, GAO Haibo, YU Haitao, LIU Zhen, LI Nan, DING Liang, DENG Zongquan. Design and Deployment Control of Landing Leg for a Vertical Takeoff and Landing Vehicle[J]. Journal of Mechanical Engineering, 2020, 56(19): 171-181.

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