In low speed forward flight, the effect of sideslip angle on rotor/fuselage aerodynamic interactions is shown in all the six force components of the fuselage.

A double sensitivity VISAR system is used to measure the flyer velocity of electrically exploding foil initiator.

From this methed,the influence of delay time,flying speed,pitch angle and over load to the altitude loss was calculated and some important factors effecting the safty of ground attack target shooting were pointed out, which included big absolute value of the pitch angle,short shooting distance,ling.