侧向喷流单、双喷管气动特性研究

在CARDC-5的高超声速推进风洞中,采用空气作为喷流介质对双锥柱体模型的单、双喷管侧向喷流干扰进行了对比实验研究.实验状态为:马赫数6、飞行高度H=54km、迎角α=0°~6°、滚转角y=0°~9°.实验结果表明:(1)单喷推力放大因子在1左右,力矩放大因子略小于1,喷流干扰影响较小;(2)双喷管流场因为喷流相互干扰的作用,其各放大因子变化量较单喷更稳定;(3)在此高度及模型外形条件下,不管是单喷管还是双喷管,喷流干扰对其自身推力影响不大.

Force interaction experiment investigation for lateral jets

Lateral jet interaction force experiments were carried out in the propulsion wind tunnel of CARDC-5 of a model equipped with divert jet thruster for single jet and double jets at a nominal flow with Mach number of 6,altitude of 54km, angles of attack ranging from 0 to 6 deg and rolling angles ranging from 0 to 90 deg.Synthesis of all the results show:(1) both of the force and the moment of single jet are affected little by the interference;(2) the amplification factors of double jets are more stable than that of the single jet because of the interference between the two jets;(3) comparing with the force made by the jet,the interaction between air and jet are small enough to be ignored.