Analytical Study on Deformation and Structural Safety of Parafoil
This study focuses on the cell bump distortion and bearing capacity of parafoil structure. Based on the mechanical properties of the membrane structure, the spanwise model of parafoil inflation was established and verified by comparing with the fluid-structure interaction (FSI) results. Because the...
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/2018/8924983 |
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| _version_ | 1832563222241083392 |
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| author | Longfang Wang Weiliang He |
| author_facet | Longfang Wang Weiliang He |
| author_sort | Longfang Wang |
| collection | DOAJ |
| description | This study focuses on the cell bump distortion and bearing capacity of parafoil structure. Based on the mechanical properties of the membrane structure, the spanwise model of parafoil inflation was established and verified by comparing with the fluid-structure interaction (FSI) results. Because the internal pressure is very low, the chordwise stiffness is mainly generated by suspending lines. The chordwise model of inflated parafoil was established in consideration of elastic force and aerodynamic force. The results show that the cell is slenderer; the canopy surface is smoother; the aerodynamic load has a light effect on the shrinkage and bump ratios; when the cell width is constant, the critical dynamic pressure reduces k times with the k times increasing in parafoil area; and the design parameters of the first-row line OA have significant effects on the structural stiffness of inflated parafoil. The analytical model is useful for the weakening deformation design and the safety discussion of large parafoil for rocket booster recovery. |
| format | Article |
| id | doaj-art-6d3ecad01bf942e88d9875e36090f831 |
| institution | Kabale University |
| issn | 1687-5966 1687-5974 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Aerospace Engineering |
| spelling | doaj-art-6d3ecad01bf942e88d9875e36090f8312025-02-03T01:20:39ZengWileyInternational Journal of Aerospace Engineering1687-59661687-59742018-01-01201810.1155/2018/89249838924983Analytical Study on Deformation and Structural Safety of ParafoilLongfang Wang0Weiliang He1School of Astronautics, Beihang University, Beijing 100191, ChinaSchool of Astronautics, Beihang University, Beijing 100191, ChinaThis study focuses on the cell bump distortion and bearing capacity of parafoil structure. Based on the mechanical properties of the membrane structure, the spanwise model of parafoil inflation was established and verified by comparing with the fluid-structure interaction (FSI) results. Because the internal pressure is very low, the chordwise stiffness is mainly generated by suspending lines. The chordwise model of inflated parafoil was established in consideration of elastic force and aerodynamic force. The results show that the cell is slenderer; the canopy surface is smoother; the aerodynamic load has a light effect on the shrinkage and bump ratios; when the cell width is constant, the critical dynamic pressure reduces k times with the k times increasing in parafoil area; and the design parameters of the first-row line OA have significant effects on the structural stiffness of inflated parafoil. The analytical model is useful for the weakening deformation design and the safety discussion of large parafoil for rocket booster recovery.http://dx.doi.org/10.1155/2018/8924983 |
| spellingShingle | Longfang Wang Weiliang He Analytical Study on Deformation and Structural Safety of Parafoil International Journal of Aerospace Engineering |
| title | Analytical Study on Deformation and Structural Safety of Parafoil |
| title_full | Analytical Study on Deformation and Structural Safety of Parafoil |
| title_fullStr | Analytical Study on Deformation and Structural Safety of Parafoil |
| title_full_unstemmed | Analytical Study on Deformation and Structural Safety of Parafoil |
| title_short | Analytical Study on Deformation and Structural Safety of Parafoil |
| title_sort | analytical study on deformation and structural safety of parafoil |
| url | http://dx.doi.org/10.1155/2018/8924983 |
| work_keys_str_mv | AT longfangwang analyticalstudyondeformationandstructuralsafetyofparafoil AT weilianghe analyticalstudyondeformationandstructuralsafetyofparafoil |