航弹风标式导引头失调角测量

The Measurement of the AS Seeker's Misalignment Angle of Laser Guided Bomb

目的 研究航弹风标式导引头失调角风洞测量技术，给出一个外形的失调角； 方法 将特制的小型磁敏角度传感器装于风标式导引头内，测量风标式导引头纵轴与弹体纵轴的夹角，经处理后得到失调角； 结果 在Ｍａ＝ ０．６～１．０，α＝ ０～２８°范围内，得到了失调角随Ｍａ，α变化的实验数据； 结论 所用方法能得到较准确的风标式导引头失调角；失调角产生于弹体前段对风标式导引头的非对称气动力干扰；失调角量值不大，小攻角时为负值，大攻角时为正值；

Aim To develop the wind tunnel technique measuring the misalignment angle of the aerodynamically stabilized seeker(AS seeker) of laser guided bomb. Methods A special small magnetic angular sensor was installed in the AS seeker, and the angle included between the AS seeker's axis and the body's axis of laser guided bomb could be measured. Then, the misalignment angle would be obtained from the included angle. Results Within the range of Ma= 0 6～1 0, α =0～28°, the experimental data of the misalignment angle changing with Ma and α were obtained. Conclusion With the method, rather accurate AS seeker's misalignment angle can be obtained. The misalignment angle is produced by the asymmetric aerodynamic disturbance of the fore part of bomb's body to AS seeker. The value of the misalignment angle is small, and it's negative at a small attack angle and positive at a large attack angle.