![]() ![]() Consequently, Magnus moments generated by different boundary layer thicknesses at the front and rear of the missile body decreased and the Magnus moment generated by the tail fin became larger. ![]() With the increasing altitude, the position of the boundary layer with a larger thickness of the missile body moved forward, making the lateral force distribution of the missile body even. When the angle of attack was 20°, the interference of the tail fin to the lateral force of the missile body was different from that for other angles of attack, leading to an increase of the lateral force of the rear part of the missile body. The Magnus force direction did not change with the change of the altitude and the angle of attack at low angles of attack however, it changed with altitude at an angle of attack of 30°. At a low altitude, with the increase of the angle of attack, the Magnus moment direction changed from positive to negative however, at high altitudes, with the increase of the angle of attack, the Magnus moment direction changed from positive to negative and then again to positive. It was found that the Magnus moment direction of the missiles changed with the increase of the angle of attack. The Magnus moment characteristics of rotating missiles with Mach numbers of 1.3 and 1.5 at different altitudes and angles of attack were numerically simulated based on the transition SST model.
0 Comments
Leave a Reply. |