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张有,张斌山,吴锋.六分力台架设计与矢量推力定位[J].航空动力学报,2019,34(11):2324~2330
六分力台架设计与矢量推力定位
Six-component stand design and vector thrust positioning
投稿时间:2019-05-15  
DOI:10.13224/j.cnki.jasp.2019.11.003
中文关键词:  六分力台架  矢量推力  动架  测力传感器  校准
英文关键词:six-component stand  vector thrust  floating rame  load sensor  calibration
基金项目:国家自然科学基金(11601432); 重点实验室基金(N2018KE0080)
作者单位
张有 中国航空发动机集团有限公司 四川燃气涡轮研究院 高空模拟技术重点实验室,四川 江油 621700 
张斌山 西安石油大学 电子工程学院,西安 710065 
吴锋 中国航空发动机集团有限公司 四川燃气涡轮研究院高空模拟技术重点实验室,四川 江油 621700 
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中文摘要:
      从螺旋理论出发,给出六分力台架上测力单元的基本设计准则,并证明由逆静力映射矩阵乘以传感器所受反力来计算矢量推力在数学上是不适定的,只能获得矢量推力的3个分力和3个力矩,无法求得该矢量推力的作用点。为了克服上述缺点,提出了确定矢量推力作用点的环向偏转法,并用数值算例验证了该方法的可行性。算例结果表明:发动机和动架的重力会对矢量推力的作用点确定产生严重干扰,因此使用环向偏转法确定力心时必须事先消除重力的影响。
英文摘要:
      Based on the screw theory, some basic design principles of six-component thrust stand were described to ensure its effectiveness. This proved that it was improper mathematically to predict the vector thrust by multiplying the inverse static mapping matrix with the reading of sensors, and only three forces and three moments of the vector thrust can be obtained, but the action point cannot be accurately positioned. In order to find the action point, an experimental method denoted as circular deflection method was proposed, at least three tests about thrusts of same axial angle and different direction angles were needed.Finally, the validity of the proposed method was verified by examples. The numerical result showed that the weights of the engine and the floating frame seriously affected the positioning of action point, so the gravity influence must be eliminated before using this method.
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