涡桨飞机飞行性能和升阻特性的试飞确定

讨论了涡轮螺桨飞机阻力极曲线值得注意的一些特点,并介绍了根据这些特点而提出的试飞确定涡桨飞机飞行性能和升阻特性的一种“等质量法”该方法先把各种飞行条件下获得的试飞数据算到的标准条件,然后利用参数组合的线性关系来简化数据处理,具有简单易行的优点。

Method of Determining Performance and Lift/Drag Polar Characteristics for a Turboprop Aircraft

This paper discusses drag polar features for a turboprop engine powered aircraft, and then presents "identical weight" method which can be used to determine drag - polar, cruise and climb performance for a turboprop aircraft in flight tests. Based on this method, flight test data from stable level flight or climb flight at any weight and any altitude can be reduced to the equivalent data at standard conditions (standard weight and sea - level ), and then by use of the linear relation between parameter combinations the data prccess can be simplified. This is a simple and acceptable method for certification flight tests and data process of a civil turboprop aircraft.