Abstract
In order to study the influence of boattail on the Magnus effect of spinning projectile at small angles of attack, the configurations with various boattail angles (θt) and lengths (Lt/D) are numerically simulated. The variations of the aerodynamic force and moment with Ma, θt and Lt/D are obtained. According to the aerodynamic characteristics and flow field structure, the effects of boattail on Magnus effect are studied in details, and the mechanism of the Magnus effect for spinning projectile is analyzed. The results show that component of Magnus force along-z direction increases with θt and Lt/D due to the asymmetric distortion of the boundary layer. Meanwhile, the force along z-direction due to the asymmetric circumferential shear stress distortion decreases gradually with θt and Lt/D, while increasing with Ma. The force along-z direction due to the asymmetric distortion of axial and circumferential pressures increases with θt, Lt/D, and Ma for Ma≥1, while decreasing with Ma for Ma<1.
| Original language | English |
|---|---|
| Pages (from-to) | 1705-1715 |
| Number of pages | 11 |
| Journal | Binggong Xuebao/Acta Armamentarii |
| Volume | 38 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - 1 Sept 2017 |
Keywords
- Angle of boattail
- Length of boattail
- Magnus effect
- Ordnance science and technology