应变计法测量螺旋桨拉力  

Using Strain Gauge to Measure the Pull Force of Propeller

作　　者：曹高峰[1] 原博[1] 郭斌[1] 

机构地区：[1]中国飞行试验研究院发动机所,陕西西安710089

出　　处：《工程与试验》2013年第2期12-15,74,共5页Engineering and Test

摘　　要：螺旋桨拉力是螺旋桨的主要性能指标之一。工程技术领域提出了很多方法得到螺旋桨实际工作过程中的拉力,但这些方法只能在地面上予以实施,不能实测实际飞行过程中螺旋桨的拉力。在某型螺旋桨发动机的试飞过程中,尝试通过实测发动机承力杆系的应变来计算螺旋桨拉力。尽管这种方法由于发动机工作过程中主撑杆弹性变形很小,且实际飞行过程中受力复杂,所得结果与实际预期有一定差异,但该方法对CFD计算模型的修正以及实际飞行结果反证仍具有一定的参考意义。The pull force of propeller is one of the main functional indexes of the propeller. In the engineering technique realm, a large number of methods are brought forward to get the pull force of the propeller in the physically work process, but these methods only can measure the pull force of the propeller on the ground, can not measure the pull force of the propeller in the physically work process. In a propeller engine flight test, a method is presented to calculate the pull force of the propeller by using strain gauge to measure the strain of the engine force frame structure. On account of the little strain of the main force frame structure and the complex force during the real flight, the result is different from the real fact. But, the method has an active reference for CFD simulation study and real flight result.

关 键 词：应变计 螺旋桨 拉力 

分 类 号：V211.44[航空宇航科学与技术—航空宇航推进理论与工程]