Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic Speed
Obvious aeroelastic deformation occurs in spinning projectiles with large slenderness ratio, which seriously affects flight stability and maneuverability. This paper investigates the aeroelastic response of spinning projectiles with large slenderness ratio under supersonic speed. Based on a dynamic...
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MDPI AG
2023-07-01
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| Series: | Aerospace |
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| Online Access: | https://www.mdpi.com/2226-4310/10/7/646 |
| _version_ | 1827734377181741056 |
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| author | Qi Liu Juanmian Lei Yong Yu Jintao Yin |
| author_facet | Qi Liu Juanmian Lei Yong Yu Jintao Yin |
| author_sort | Qi Liu |
| collection | DOAJ |
| description | Obvious aeroelastic deformation occurs in spinning projectiles with large slenderness ratio, which seriously affects flight stability and maneuverability. This paper investigates the aeroelastic response of spinning projectiles with large slenderness ratio under supersonic speed. Based on a dynamic mesh method, an unsteady numerical simulation method is developed to study the aeroelasticity of spinning projectiles by coupling aerodynamics and structural dynamics. The numerical simulation method is well validated by the experimental results of AGARD 445.6 wing flutter. Then, the aeroelastic response of spinning projectiles with large slenderness ratio is numerically explored under different flight conditions. The aeroelastic response is obtained, revealing the presence of beat vibrations and variations in response frequency. Furthermore, the influence mechanism of flight conditions on the aeroelastic response is analyzed. The results suggest that the coupling of the first two modes of the projectile caused by the spinning motion leads to the occurrence of beat vibrations in the aeroelastic response; the coupling degree of the first two modes decreases as the angle of attack increases and it increases with the increase in spinning speed; and the time−averaged deformation caused by the time−averaged aerodynamic force is beneficial to the convergence of the aeroelastic response of spinning projectiles, while the rotation−induced Magnus effect is counterproductive. |
| first_indexed | 2024-03-11T01:24:24Z |
| format | Article |
| id | doaj.art-53f1720eaeae460f90a0697060bb5902 |
| institution | Directory Open Access Journal |
| issn | 2226-4310 |
| language | English |
| last_indexed | 2024-03-11T01:24:24Z |
| publishDate | 2023-07-01 |
| publisher | MDPI AG |
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| series | Aerospace |
| spelling | doaj.art-53f1720eaeae460f90a0697060bb59022023-11-18T17:51:15ZengMDPI AGAerospace2226-43102023-07-0110764610.3390/aerospace10070646Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic SpeedQi Liu0Juanmian Lei1Yong Yu2Jintao Yin3School of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, ChinaSchool of Aerospace Engineering, Beijing Institute of Technology, Beijing 100081, ChinaXi’an Modern Control Technology Research Institute, Xi’an 710065, ChinaObvious aeroelastic deformation occurs in spinning projectiles with large slenderness ratio, which seriously affects flight stability and maneuverability. This paper investigates the aeroelastic response of spinning projectiles with large slenderness ratio under supersonic speed. Based on a dynamic mesh method, an unsteady numerical simulation method is developed to study the aeroelasticity of spinning projectiles by coupling aerodynamics and structural dynamics. The numerical simulation method is well validated by the experimental results of AGARD 445.6 wing flutter. Then, the aeroelastic response of spinning projectiles with large slenderness ratio is numerically explored under different flight conditions. The aeroelastic response is obtained, revealing the presence of beat vibrations and variations in response frequency. Furthermore, the influence mechanism of flight conditions on the aeroelastic response is analyzed. The results suggest that the coupling of the first two modes of the projectile caused by the spinning motion leads to the occurrence of beat vibrations in the aeroelastic response; the coupling degree of the first two modes decreases as the angle of attack increases and it increases with the increase in spinning speed; and the time−averaged deformation caused by the time−averaged aerodynamic force is beneficial to the convergence of the aeroelastic response of spinning projectiles, while the rotation−induced Magnus effect is counterproductive.https://www.mdpi.com/2226-4310/10/7/646spinning projectilesaeroelasticitydynamic responsefluid–solid couplingnumerical simulation |
| spellingShingle | Qi Liu Juanmian Lei Yong Yu Jintao Yin Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic Speed Aerospace spinning projectiles aeroelasticity dynamic response fluid–solid coupling numerical simulation |
| title | Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic Speed |
| title_full | Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic Speed |
| title_fullStr | Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic Speed |
| title_full_unstemmed | Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic Speed |
| title_short | Aeroelastic Response of Spinning Projectiles with Large Slenderness Ratio at Supersonic Speed |
| title_sort | aeroelastic response of spinning projectiles with large slenderness ratio at supersonic speed |
| topic | spinning projectiles aeroelasticity dynamic response fluid–solid coupling numerical simulation |
| url | https://www.mdpi.com/2226-4310/10/7/646 |
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