一种获取飞机RAT带载能力的试飞方法

飞机RAT的实际带载能力不仅取决于飞机空度,而且受到飞行姿态的制约,很难用理论公式准确推算。提出了一种飞行试验方法,分析特定的试飞测试数据,可获得飞机RAT的实际带载能力。试验包括RAT平飞带载和RAT侧滑带载两部分试飞。通过RAT平飞带载试验,得到不同重量下的RAT空速与飞机空速的关系曲线;通过RAT侧滑带载试验,可得到不同侧滑角飞行下RAT空速与飞机空速的关系曲线。结合试验结果,可以确定飞机在任意重量和飞行姿态下的RAT空速,进而获知RAT实际带载能力。

A Flight Test Method of Determining Airplane RAT's Load Capacity

The load capacity of airplane＇s ram air turbine （ RAT） depends not only on airplane airspeed, but al-so on the flight attitude. It is difficult to calculate by using theoretical equations. A flight test method is designed to determine the RAT＇s real-time load capacity by just analyzing some flight test data obtained. This method plans two test subjects：RAT load capacity test at level flight and RAT load capacity test at sideslip. The former test can obtain the variation of RAT airspeed with airplane airspeed for different weights, and the latter can bring us the re-lationship for different sideslip angles. The results of the two tests show that the RAT airspeed at any weight and flight attitude can be determined and further know its load capacity.