Self-Turning Process and Aerodynamic Characteristics of Slender Bodies with Different Center-of-Gravity Positions

Document Type : Regular Article


1 School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, China

2 Shanghai Academy of Spaceflight Technology, China



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.


Barnette, D., M. Bettencourt and M. Hoemmen (2012). Using miniapplications in a Mantevo framework for optimizing Sandia's SPARC CFD code on multi-core, many-core, and GPU-accelerated compute platforms. In 51st AIAA aerospace sciences meeting including the new horizons forum and aerospace exposition (p. 1126).##
Bellakhal, G., J. Chahed and F. Chaibina (2019). First and second order turbulence closures applied to homogeneous turbulent bubbly flows. Journal of Applied Fluid Mechanics 12(6), 1813-1823.##
Cao, Y., W. Tan, Y. Su, Z. Xu and G. Zhong (2020). The Effects of Icing on Aircraft Longitudinal Aerodynamic Characteristics. Mathematics 8(7), 1171.##
Champigny, P. (1986). Stability of side forces on bodies at high angles of attack. 4th Applied Aerodynamics Conference (p. 1776).##
Deng, X., Q. Chen, X. Yuan and J. Chen (2016). Study of aerodynamic uncertainty on the complex slender vehicle at high angle of attack. Scientia Sinica Technologica 46(5), 493-499.##
Hechmi, K. and L. Taieb (2012). An extension of the ssg model on compressible turbulent flow. Journal of Applied Fluid Mechanics 5(4), 101-111.##
Howison, J. and K. Ekici (2013). Unsteady Analysis of Wind Turbine Flows Using the Harmonic Balance Method. Aiaa Aerospace Sciences Meeting (p. 1107).##
Kang, D. H. and O. J. Kwon (2020). Numerical study about buffet characteristics and attenuation of vertical tail at high angles of attack. International Journal of Aeronautical and Space Sciences 21(2), 315-328.##
Le Clainche, S., D. Rodríguez, V. Theofilis and J. Soria (2016). Formation of three-dimensional structures in the hemisphere-cylinder. AIAA Journal 54(12), 3884-3894.##
Li, H., S. Guo, Y. L. Zhang, C. Zhou and J. H. Wu (2017). Unsteady aerodynamic and optimal kinematic analysis of a micro flapping wing rotor. Aerospace Science and Technology 63, 167-178.##
Liu, Y., R. W. Claus, J. S. Litt and T. H. Guo (2013). Simulating Effects of High Angle of Attack on Turbofan Engine Performance. 51st AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace Exposition (p.1075).##
Ma, Q. and H. Li (2020). Design of Attitude Control Law for Over-Shoulder Launch of Helicopter-borne Air-to-ground Missile. In 2020 IEEE 5th Information Technology and Mechatronics Engineering Conference (ITOEC) (pp. 1620-1625). IEEE.##
Menter, F. R. (1994). Two-equation eddy-viscosity turbulence models for engineering applications. AIAA Journal 32.##
Qi, Z., Y. Wang, H. Bai, Y. Sha and Q. Li (2018). Effects of micro-perturbations on the asymmetric vortices over a blunt-nose slender body at a high angle of attack. European Journal of Mechanics-B/Fluids 68, 211-218.##
Sulaeman, E., A. Omar, W. Asrar, M. Aldheeb and A. Altaf (2019). Effect of a Directionally Porous Wing Tip on Tip Vortex. Journal of Applied Fluid Mechanics 13(2), 651-665.##
Teng, J., J. Zhang, Z. An and Y. You (2018). Detached eddy investigation of conical cavity flow at Mach 0.9. Journal of Applied Fluid Mechanics 11(1), 165-176.##
Thukral, A. and M. Innocenti (1998). A sliding mode missile pitch autopilot synthesis for high angle of attack maneuvering. IEEE Transactions on Control Systems Technology 6(3), 359-371.##
Tong, H., J. Fang, J. Guo, K. Lin and Y. Wang (2019). Numerical simulation of unsteady aerodynamic performance of novel adaptive airfoil for vertical Axis wind turbine. Energies 12(21), 4106.##
Wang, X., W. Zhengwei, U. Wenjun (2021) Analysis on Flowfield and Aerodynamic Characteristics of Escort Free-Flight Decoy with Asymmetrical Tail at High Incidences. Journal of Ordnance Equipment Engineering 42( 03), 55-60, 82.##
Wilcox, F., T. Birch and J. Allen (2004). Force, surface pressure, and flowfield measurements on a slender missile configuration with square cross-section at supersonic speeds. In 22nd Applied Aerodynamics Conference and Exhibit (p. 5451).##
Yang, L., M. Wang and Z. Gao (2011). Numerical investigation of unsteady aerodynamic characteristics of a pitching missile. Aerospace Science and Technology 15(2), 129-136.##
Zhu, Y., H. Yuan and C. Lee (2015). Experimental investigations of the initial growth of flow asymmetries over a slender body of revolution at high angles of attack. Physics of Fluids 27(8), 246-257.##
Volume 15, Issue 4 - Serial Number 66
July and August 2022
Pages 1281-1289
  • Received: 25 December 2021
  • Revised: 30 March 2022
  • Accepted: 30 March 2022
  • Available online: 17 May 2022