一种垂直起降运载器支腿构型设计与尺度优化

Realizing the reusability of the vertical take-off and landing vehicle is an important way to significantly reduce the launch cost. After completing the launch mission and returning to the landing site, the vehicle successively executes outrigger deploying, locking, and landing cushioning to achieve smooth and soft landing. For the configuration of the outrigger of the vehicle, a collection of single-degree-of-freedom deployment schemes are established from the perspective of graph theory. According to the evaluation specification of mechanism based on dynamic model calculation, the optimal scheme of support configuration is selected. On this basis, a parametric model of the outrigger scale is established and the force equations of the links under the limit landing conditions are derived. To lighten the outrigger and improve the force of the hinge, the structural parameters of the outrigger are optimized. Finally, the mechanism scheme is devised. The strength, modal, and landing performance of the outrigger are also analyzed. Simulation results show that the optimization results and mechanical properties meet the requirements of engineering application. The research results can provide reference scheme and technical support for the future development of the reusable vehicle.