The landing gear is a critical subsystem of a lander for a successful landing on the moon or a planet. During a landing event, structural loading, energy absorption and toppling stability are important factors for the landing gear development. These aspects can be studied using simulations. The landing gear comprising the primary struct, secondary structs, footpad, and joints, is easily modeled using Simscape Multibody toolbox. The energy absorption mechanisms in the structs is readily modeled using Simulink and Multibody blocks based on the relative motions of the inner and outer cylinder of the structures. During touchdown, the footpads strike the lunar surface, and the contact forces can be modeled including the soil mechanical properties. Slosh dynamics are included using a mechanical pendulum model. Tip-over controllers are developed using Simulink blocks and toolboxes. This model was intensively tested manually then additionally with Monte Carlo simulation. It offers the opportunity for landing stability study, i.e. the max slope a lander can land without tipping over in 3D realistic landing situations.
Lunar Lander Landing Modeling and Simulation in Simscape
2023
3 pages
Report
Keine Angabe
Englisch
Simscape language for physical modeling
Online Contents | 2008
SimScape terrain modeling toolkit
IEEE | 2006
|Nonlinear finite element modeling and simulation for landing leg of lunar lander
British Library Online Contents | 2013
|Dynamic analysis and simulation of soft-landing for lunar lander
British Library Online Contents | 2012
|