挂架天平测量飞机外挂物运载飞行载荷

The Measurement of Inflight Carried Loads on External Stores with Pylon-balance

为了飞行试验测量外挂物运载飞行载荷,开发了六分量挂架天平。给出了稳定平飞、对称拉起状态下飞行试验获得的外挂物载荷典型结果,利用风洞实验得到的外挂物气动导数计算出相同飞行状态下的外挂物运载气动载荷。结果间比对分析,稳态下载荷大小和规律十分一致,机动状态下的差异值得深入研究。挂架天平用于飞行试验测量外挂物载荷是切实有效的。

In order to measure the inflight carried loads on external store in flight test, a six component force pylon-balance has been developed. The inflight carried typical loads on external store are provided under the state of steady level flight and normal symmetrical pull-up. The aerodynamic loads on external store have been calculated by the aerodynamic differential coefficients deduced by wind tunnel test data. These results have been analysed and compared; the magnitude and laws are very consistent under the stable state, the difference is worth studing under unsteady state. The pylon-balance is practical and effective for measuring the loads of external stores in flight test.