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The Impact Modeling and Experimental Verification of a Launch Vehicle with Crushing-Type Landing Gear
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The Impact Modeling and Experimental Verification of a Launch Vehicle with Crushing-Type Landing Gear
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Journal Article
The Impact Modeling and Experimental Verification of a Launch Vehicle with Crushing-Type Landing Gear
2023
Overview
In order to investigate the landing process of a vertical landing reusable vehicle, a dynamic model with a complex nonlinear dissipative element is established based on the discrete impulse step approach, which includes a three-dimensional multi-impact model considering friction and material compliance, and a multistage aluminum honeycomb theoretical model. The normal two-stiffness spring model is adopted in the foot–ground impact model, two motion patterns (stick and slip) are considered on the tangential plane and the structural changes caused by buffering behavior are included, and the energy conversion during the impact follows the law of conservation of energy. The state transition method is used to solve the dynamic stability convergence problem of the vehicle under the coupling effect of impact and buffering deformation in the primary impulse space. Landing experiments on a scaled physical reusable vehicle prototype are conducted to demonstrate that the theoretical results exhibit good agreement with the experimental data.
Publisher
MDPI AG
