Design, Analysis and Stability testing of Lunar Lander for Soft-Landing

Aravind, Gayatri; Vishnu, Suggula Naga Sai; Amarnath, K.V.; Hithesh, U.; Harikrishnan, P.; Sreedharan, Pramod; Udupa, Ganesh

doi:10.1016/j.matpr.2020.04.438

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Chen et al (2008) proposed the equivalent finite-element modeling method of honeycombs and substituted the finite-element simulation results into the dynamics simulation model of the lander to analyze its soft-landing performance. Zheng et al (2018) and Aravind et al (2020) focused on the buffering and energy absorption capacity of the lunar lander and studied its soft-landing stability under various adverse conditions.…”

Section: Introductionmentioning

confidence: 99%

A comprehensive performance optimization method for the honeycomb buffer of a legged-type lander

Wang

2021

AEAT

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Purpose In the field of planetary exploration, the legged-type lander is a common landing buffer device. There are two important performance metrics for legged-type landers: the energy absorption capacity and landing stability. In this paper, a novel method is proposed to optimize the honeycomb buffer of a legged-type lander. Optimization design variables are the dimension parameters of honeycomb and the objective functions are the evaluation parameters of the above two performance metrics. Design/methodology/approach A multi-body dynamic model of a lander and a finite-element model of the metal honeycomb are established. Based on the simulation results of the finite-element model and the quartic polynomial, the surrogate models are established to evaluate the energy absorption capacity of honeycomb. Considering both the multi-body dynamic model and the surrogate models, the study designed the optimization flow of dimension parameters of honeycomb. Besides, the non-dominated sorting genetic algorithm II is used for iterative calculation. Findings Images of surrogate models show the monotonous functional relationship between the honeycomb’s energy absorption characteristics and its dimension parameters. Optimization results show an apparent contradiction among the objective functions. Besides, according to the simulation results, this method can significantly improve the comprehensive performance of the lander. Originality/value The novel method can effectively reduce the cost of honeycomb compression tests and improve the lander’s design. Therefore, it can be used for optimizing buffers of other types of legged-type landers.

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Section: Introductionmentioning

confidence: 99%

A comprehensive performance optimization method for the honeycomb buffer of a legged-type lander

Wang

2021

AEAT

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“…Currently, the buffers used in research and development mainly include aluminum honeycomb buffers, hydraulic buffers, mechanical buffers, magnetorheological fluid buffers, and metal rubber buffers. [22][23][24][25][26][27][28] The aluminum honeycomb buffer is the most used and most mature buffer among the successfully launched landers. The buffer has low mass, good energy absorption effect, stable operation, adjustable buffer stroke, and low dependence on the environment.…”

Section: Introductionmentioning

confidence: 99%

Research on Aluminum Honeycomb Buffer Device for Soft Landing on the Lunar Surface

Wei

Zhang

Zhao

et al. 2021

International Journal of Aerospace Engineering

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To obtain the resources of the moon, humans have launched a series of exploration activities on the moon, and the landing buffer device is an indispensable device on the lander required to perform lunar surface exploration missions. It can effectively protect the lander during landing scientific payloads such as instruments on the lander. Based on the mechanical properties and deformation mechanism of the aluminum honeycomb as buffer material, this paper compares and analyzes different simulation schemes and finally establishes the bonding model of the honeycomb by using the discrete element method; the parameters of the honeycomb material are matched through compression experiments to verify the discrete element honeycomb simulation and the feasibility of the scheme and its parameters. To meet the buffering requirements of large landers, a spider web honeycomb structure is proposed, its modeling method is studied by using the discrete element secondary development program, and the model is compressed as a whole to verify the energy consumption characteristics of the spider web honeycomb structure. Aiming at the honeycomb buffer device during the landing process, the cobweb honeycomb buffer structure and its corresponding landing coupling model were established using the discrete element method, the landing process was simulated and analyzed, and the landing results were predicted to verify the feasibility of the device, providing a reference for the design of the lander and its buffer device.

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“…Liang et al in 2011, used an explicit nonlinear finite element method implemented in ABAQUS to study the impact of a legged lander and aluminum honeycomb shock absorber with the lunar soil [19]. Other authors in [20][21][22][23][24] studied the impact of the lander with ADAMS considering the soil either as an elastic or a rigid body.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Modeling and Simulation of a Robotic Lander Based on Variable Radius Drums

et al. 2020

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Soft-landing on planetary surfaces is the main challenge in most space exploration missions. In this work, the dynamic modeling and simulation of a three-legged robotic lander based on variable radius drums are presented. In particular, the proposed robotic system consists of a non-reversible mechanism that allows a landing object to constant decelerate in the phase of impact with ground. The mechanism is based on variable radius drums, which are used to shape the elastic response of a spring to produce a specific behavior. A dynamic model of the proposed robotic lander is first presented. Then, its behavior is evaluated through numerical multibody simulations. Results show the feasibility of the proposed design and applicability of the mechanism in landing operations.

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Design, Analysis and Stability testing of Lunar Lander for Soft-Landing

Cited by 5 publications

References 4 publications

A comprehensive performance optimization method for the honeycomb buffer of a legged-type lander

A comprehensive performance optimization method for the honeycomb buffer of a legged-type lander

Research on Aluminum Honeycomb Buffer Device for Soft Landing on the Lunar Surface

Dynamic Modeling and Simulation of a Robotic Lander Based on Variable Radius Drums

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