Parametric design and analysis on the landing gear of a planet lander using the response surface method

Zheng, Guang; Nie, Hong; Luo, Ming‐Xing; Chen, Jinbao; Man, Jianfeng; Chen, Chuanzhi; Lee, Heow Pueh

doi:10.1016/j.actaastro.2018.05.020

Cited by 19 publications

(4 citation statements)

References 6 publications

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“…The fracture toughness characteristics that affect the cracking performance of different asphalt mixtures can be calculated with response surface method and the result of this method show a good agreement with the expected data which confirm the appropriateness of the optimization process [4]. Response surface method has been conducted in the various investigations such as civil engineering [5][6][7], mechanical engineering [8] geotechnical engineering [9,10] to evaluate material performance without too many experiments. In this study after the conducting various tests such as Marshall stability, flow, cantabro, performace of mix asphalt that obtained from the certain percentage of recycled aggregate, virgin aggregates and two different types of bitumen (70/100, 50/70) were evaluated by using RSA method.…”

Section: Introductionmentioning

confidence: 60%

Prediction of the Asphalt Mixture Performance Prepared with Recycled Fine Aggregate by using Response Surface Analysis

et al. 2019

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Applying new techniques such as numerical method would prepare more facilities to estimate the result of experimental studies.In this research, performance of asphalt mixtures prepared with recycled aggregates was measured by using response surface analysis method. For this aim, recycled aggregates obtained from chip seal roads were used as fine aggregates with new aggregates in asphalt mixtures. Recycled aggregates were added into the mixture with 25, 50, 75, 100% ratios. 50/70 and 70/100 penetration bitumens were used as binder in the prepared mixtures. In order to measure the perfromance of mixtures, Marshall stability, flow, cantabro were performed. The results obtained from response surface analysis showed that, the estimation models have R 2 values higher than 80. This means that, response surface analysis can be used as a numerical method for the prediction of asphalt mixture perfomance.

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Section: Introductionmentioning

confidence: 60%

Prediction of the Asphalt Mixture Performance Prepared with Recycled Fine Aggregate by using Response Surface Analysis

et al. 2019

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“…Perhaps the most widely used surrogate model for landing dynamics analysis is obtained by the response surface (RS). Zheng et al (2018) analyzed the landing performance of a lunar lander and optimized seven design parameters of the landing gear using the RS model as an alternative to the finite element model. Ding et al (2019) established the RS model for a lunar lander based on the sensitivity analysis results and conducted the optimization design of the adaptive landing gear.…”

Section: Introductionmentioning

confidence: 99%

Stability analysis of Mars soft landing under uncertain landing conditions and two landing strategies

Jian

Liu

Yang

et al. 2022

AEAT

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Purpose The purpose of this paper is to study the landing performance of the Mars lander considering uncertain landing conditions under two landing modes. Design/methodology/approach A dynamics analysis model for the legged Mars lander is established for landing simulation, where the nonlinear large-deformation flexible buffer rods are equivalently modeled with a rigid-body mechanism with external forces and movement limit. Sensitivities of the landing stability to various landing conditions are analyzed using the Quasi–Monte-Carlo-based Sobol’ method and computer-aided landing simulations. Moreover, based on the results of sensitivity analysis, sensitive parameters are selected for estimating the safe boundaries for stability indices of rotation and clearance. Findings It can be concluded from this study that the lander has excellent ability against overturning. The shutdown-before-touchdown strategy helps to maintain than landing pose, and the shutdown-at-touchdown strategy helps to prevent the nozzle from colliding with the surface of Mars. Practical implications This study provides a theoretical reference to choose the better landing strategies for Mars landers considering uncertain landing conditions. Originality/value A parameterized dynamics Mars lander model and a simplification method are proposed to simulate the landing on Mars. Uncertain landing conditions are parameterized and considered in the dynamics model. Sensitivity analysis and safe boundary methods are used to compare the landing performances with two landing strategies.

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“…To achieve this goal, we must establish a relationship between the aluminum honeycomb (AH) geometry parameters and EP of the ML. To this end, the effectiveness of the proposed method can be tested by EA characteristics under different landing environments [2,3], include 4 type landings on level ground, 2-2 type landing, and 1-2-1 type slope landings [4,5]. Generally, the cushioning performance of the lander aims to minimize the mass or volume of the cushioning material.…”

Section: Introductionmentioning

confidence: 99%

Improving the Buffer Energy Absorption Characteristics of Movable Lander-Numerical and Experimental Studies

et al. 2020

Self Cite

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To improve the soft-landing crash performance of the movable lander (ML), this study presents an investigation of a newly designed gradual energy-absorbing structure subjected to impact loads using an ML for theoretical calculation and numerical simulations. In this work, we present a novel computational approach to optimizing the energy absorption (EA) of the ML. Our framework takes as inputting the geometrical parameter (GP) as well as EA. The finite element model of the HB1, HB2, and HB3 was established and effectively verified using numerical simulation and experimental data. The relationship between the GP of the buffer material and the EA was obtained through static experiment and impact experiment, and the cushioning performance of the lander was optimized according to the ML load mass, contact speed, and EA function. According to the optimization results, we chose an outer diameter of 240 mm, an inner diameter of 50 mm, heights of HB1 = 140 mm, HB2 = 110 mm, and HB3 = 225 as the collocation, and completed the numerical simulation of three different cases. By comparing the results of theoretical calculation and numerical simulation experiments, it can be found that the overload response rates of the main body in 4 type landing, 2-2 type landing, and 1-2-1 type landing are 4.72 G, 2.61 G, and 2.33 G, respectively. It also laid the foundation for the theoretical and methodological research of the ML and manned lander in the future.

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Parametric design and analysis on the landing gear of a planet lander using the response surface method

Cited by 19 publications

References 6 publications

Prediction of the Asphalt Mixture Performance Prepared with Recycled Fine Aggregate by using Response Surface Analysis

Prediction of the Asphalt Mixture Performance Prepared with Recycled Fine Aggregate by using Response Surface Analysis

Stability analysis of Mars soft landing under uncertain landing conditions and two landing strategies

Improving the Buffer Energy Absorption Characteristics of Movable Lander-Numerical and Experimental Studies

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