运输类飞机平衡场长的计算

主要论述了一种运输类飞机适航审定试飞平衡扬长的确定方法。首先根据其原理及继续起飞和中断起飞不同阶段的假设，对各个方程进行了全面的推导，形成了一个完整的计算程序，每种情况都有两种可供选择。使用该方法通过实际的试飞结果及试飞条件确定出相应的系数值，再通过标准的试飞条件和状态就可确定出标准状态的试飞结果。最后应用该方法进行了Ｙ７Ｈ－５００型飞机适航审定试飞，取得了较为满意的结果。

The Calculation on Balanced Field Length for Transport Aircraft

It is one of main items that how to determine the balanced field length which is the primary data required by decision speed in transport aircraft certification flight test. Based on the dynamic theory and supposition in process of take off and landing,the managerial formulae were redeveloped,and a global process of calculation was formed.In each case there are two ways can be choosed. This process will be used to calculate the standard balanced field length by the test results and condition.The method has been used to acquire the balanced field length for Y7H 500 aircraft in certification flight test,and the result is reasonable.