内埋武器超声速分离机弹干扰特性试验研究

在超声速条件下的机弹分离过程中,内埋武器受到载机复杂干扰流场作用,其气动特性与自由流情况有很大差异,对机弹分离安全有一定影响.采用基于并联机构构型的CTS(Captive Trajectory Simulation)试验技术以及纹影显示技术,研究了内埋弹舱布局新型战斗机与典型空空导弹模型的机弹干扰特性,在有/无载机干扰...

Experimental investigations on the separation interference characteristics of supersonic internal weapon releasing from the aircraft

The internal weapon is subject to the complex interference flow field of the aircraft during the separation of supersonic bombs, and its aerodynamic characteristics are significantly different from the freestream conditions, which will have a certain impact on the safety of the bomb separation. Using the new CTS test technology based on the configuration of the parallel mechanism and the schlieren techniques, the interference characteristics of a new aircraft with a typical bomber layout and a typical air-to-air missile model were studied. Under the influence factors such as the separation altitudes and folded/unfolded rudder, the pitching motion characteristics of the missile and the interference of the flow field structures for the aircraft are compared. Results show that at supersonic speed, there exists a complex shock system structure for typical embedded bomber fighter configuration, which will have a strong aerodynamic interference effect on the carrier bomb, inducing the carrier to nose up. With no initial separating angular velocity, unsafe separation is tend to occur. When reducing separation altitude, unsafe separation tendency for the bomb would advance. During the separation process, the rudder surface is not conducive to the attitude control of the loaded bomb. Meanwhile, folded rudder is unfavorable for the attitude control of the bomb during the separation procedure, thus folding the rudder as soon as possible is demanded at the premise of safe separation, in order to guarantee stability control of the bomb attitude.