Research on Impact Process of Lander Footpad against Simulant Lunar Soils
The safe landing of a Moon lander and the performance of the precise instruments it carries may be affected by too heavy impact on touchdown. Accordingly, landing characteristics have become an important research focus. Described in this paper are model tests carried out using simulated lunar soils...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2015-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2015/658386 |
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| _version_ | 1832550742495330304 |
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| author | Bo Huang Zhujin Jiang Peng Lin Daosheng Ling |
| author_facet | Bo Huang Zhujin Jiang Peng Lin Daosheng Ling |
| author_sort | Bo Huang |
| collection | DOAJ |
| description | The safe landing of a Moon lander and the performance of the precise instruments it carries may be affected by too heavy impact on touchdown. Accordingly, landing characteristics have become an important research focus. Described in this paper are model tests carried out using simulated lunar soils of different relative densities (called “simulant” lunar soils below), with a scale reduction factor of 1/6 to consider the relative gravities of the Earth and Moon. In the model tests, the lander was simplified as an impact column with a saucer-shaped footpad with various impact landing masses and velocities. Based on the test results, the relationships between the footpad peak feature responses and impact kinetic energy have been analyzed. Numerical simulation analyses were also conducted to simulate the vertical impact process. A 3D dynamic finite element model was built for which the material parameters were obtained from laboratory test data. When compared with the model tests, the numerical model proved able to effectively simulate the dynamic characteristics of the axial forces, accelerations, and penetration depths of the impact column during landing. This numerical model can be further used as required for simulating oblique landing impacts. |
| format | Article |
| id | doaj-art-0f3155d435a544469a5df2b0c48939bc |
| institution | Kabale University |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-0f3155d435a544469a5df2b0c48939bc2025-02-03T06:05:53ZengWileyShock and Vibration1070-96221875-92032015-01-01201510.1155/2015/658386658386Research on Impact Process of Lander Footpad against Simulant Lunar SoilsBo Huang0Zhujin Jiang1Peng Lin2Daosheng Ling3MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Civil Engineering, Zhejiang University, Hangzhou 310058, ChinaUrban Traffic and Underground Space Design Institute, Shanghai Municipal Engineering Design Institute (Group) Co., Ltd. (SMEDI), Shanghai 200092, ChinaState Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, ChinaMOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Department of Civil Engineering, Zhejiang University, Hangzhou 310058, ChinaThe safe landing of a Moon lander and the performance of the precise instruments it carries may be affected by too heavy impact on touchdown. Accordingly, landing characteristics have become an important research focus. Described in this paper are model tests carried out using simulated lunar soils of different relative densities (called “simulant” lunar soils below), with a scale reduction factor of 1/6 to consider the relative gravities of the Earth and Moon. In the model tests, the lander was simplified as an impact column with a saucer-shaped footpad with various impact landing masses and velocities. Based on the test results, the relationships between the footpad peak feature responses and impact kinetic energy have been analyzed. Numerical simulation analyses were also conducted to simulate the vertical impact process. A 3D dynamic finite element model was built for which the material parameters were obtained from laboratory test data. When compared with the model tests, the numerical model proved able to effectively simulate the dynamic characteristics of the axial forces, accelerations, and penetration depths of the impact column during landing. This numerical model can be further used as required for simulating oblique landing impacts.http://dx.doi.org/10.1155/2015/658386 |
| spellingShingle | Bo Huang Zhujin Jiang Peng Lin Daosheng Ling Research on Impact Process of Lander Footpad against Simulant Lunar Soils Shock and Vibration |
| title | Research on Impact Process of Lander Footpad against Simulant Lunar Soils |
| title_full | Research on Impact Process of Lander Footpad against Simulant Lunar Soils |
| title_fullStr | Research on Impact Process of Lander Footpad against Simulant Lunar Soils |
| title_full_unstemmed | Research on Impact Process of Lander Footpad against Simulant Lunar Soils |
| title_short | Research on Impact Process of Lander Footpad against Simulant Lunar Soils |
| title_sort | research on impact process of lander footpad against simulant lunar soils |
| url | http://dx.doi.org/10.1155/2015/658386 |
| work_keys_str_mv | AT bohuang researchonimpactprocessoflanderfootpadagainstsimulantlunarsoils AT zhujinjiang researchonimpactprocessoflanderfootpadagainstsimulantlunarsoils AT penglin researchonimpactprocessoflanderfootpadagainstsimulantlunarsoils AT daoshengling researchonimpactprocessoflanderfootpadagainstsimulantlunarsoils |