The drag reduction of plane-surfaces with V-shaped grooves is given out by direct numerical simulation, and the drag reduction mechanism in the base of the secondary flow theory is suggested.
利用直接数值模拟方法求得平板上V—型条纹表面上的降阻情况，并给出基于二次流动理论的降阻机理。
This paper introduces the experimental results of influence of two kinds of tail shapes on drag reduction of base bleed and discusses briefly.
介绍了两类不同尾部外形对底排弹减阻性能影响的实验结果，并进行了简要讨论。
This paper presents the general principle and method of bleeding drag reduction characteristic design of base bleed projectile.
本文提出了底部排气弹减阻特性设计的一般原则与方法。
The experimental results of the effect of base bleed propellant composition on the aerodynamic performance of drag reduction and range increase of base bleed projectile.
介绍了底排药剂成份对底排弹减阻增程气动力性能影响的实验结果。
The experimental results of the effect of base bleed propellant composition on the aerodynamic performance of drag reduction and range increase of base bleed projectile.
介绍了底排药剂成份对底排弹减阻增程气动力性能影响的实验结果。
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