“…Based on the previous studies [ 16 , 17 , 32 ]; on the asymmetric flow over a slender body, the artificial perturbation near the tip of the slender body eliminates the uncertainty of flow and provide a stable asymmetric flow structure to study. In the present study, a micro particle with a diameter of d = 0.004 D was taken as the artificial perturbation onto the nose of the slender body.…”
Section: Test Model and Approachesmentioning
confidence: 99%
“…1 (b)) for slender body of the pointed- and blunt-nose, respectively. Moreover, for the pointed-nosed slender body characterized by open-type separation, the asymmetric flow, and its corresponding side-force changed in a double period when the roll angle increased from 0° to 360° [ 17 ]; however, the single period was presented for the blunt-nosed slender body characterized by close-type separation [ 32 ]. Fig.…”
“…Based on the previous studies [ 16 , 17 , 32 ]; on the asymmetric flow over a slender body, the artificial perturbation near the tip of the slender body eliminates the uncertainty of flow and provide a stable asymmetric flow structure to study. In the present study, a micro particle with a diameter of d = 0.004 D was taken as the artificial perturbation onto the nose of the slender body.…”
Section: Test Model and Approachesmentioning
confidence: 99%
“…1 (b)) for slender body of the pointed- and blunt-nose, respectively. Moreover, for the pointed-nosed slender body characterized by open-type separation, the asymmetric flow, and its corresponding side-force changed in a double period when the roll angle increased from 0° to 360° [ 17 ]; however, the single period was presented for the blunt-nosed slender body characterized by close-type separation [ 32 ]. Fig.…”
“…After increasing the attack angle, the leeward side turbulence gradually developed into an asymmetric structure and produced a continuously changing side force on the slender body (Champigny 1986). Zhu et al (2015) and Qi et al (2018) tested and simulated slender bodies with different heads and determined the influence of head protrusion on the side force. Wang (2021) used an asymmetric-tail slender body to calculate the side force in the 0°-90° attack angle range and found that the magnitude and direction of the side force changed periodically during the actual flight process.…”
To achieve an automatic technology for over-the-shoulder (OTS) launching of air-to-air missiles, this study numerically simulated the overturning process of a slender body by using the dynamic mesh method in the ANSYS Fluent 2021 software. Motion trends and force conditions during the self-turning process were obtained for different center of gravity positions. This investigation showed that a proper center of gravity position was essential for achieving the self-turning of a slender body at high and extra-wide angles of attack. The pressure center of the slender body jumped (discontinuously changed) during the overturning process. The change in the relative position between the pressure center and the center of gravity caused the angular velocity of the slender body to first increase, then decrease and gradually stabilize. These results can be used as a reference for designing the structures of self-turning slender bodies and to realize a new technology for the OTS launching of air-to-air missiles.
“…However, these papers only describe the motion patterns and lack a discussion on the effects of wings at different axial locations on the free-to-roll motion. Given that extensive investigations have been conducted on the forebody asymmetric vortices over the blunt-nosed slender body, 20,21) further research on the coupling between the forebody vortices and wings, and the roll motion induced, is necessary.…”
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