Y7－200B飞机的失速试飞

根据Ｙ７－２００Ｂ飞机失速试飞结果，从飞机的气动设计特点出发，与原型机对比分析了飞机的失速特性。结果表明，Ｙ７－２００Ｂ飞机的气动设计改进目前还没有达到降低失速速度，提高安全裕度的预期设计目标。主要原因在于气动设计和操纵系统的改进针对性不强，改进措施不协调，为此必须进行综合的分析，系统地采取有效改进措施。

The Stalling Flight Test of Y7 - 200B Aircraft

The Y7 - 200B aircraft is developed from Y7 aircraft prototype. When the orginal design limits was kept, the aircraft is developed in order to improve flight safe margin at low speed. Y7 - 200B aircraft has been tested the stalling characters according to the airworthiness criterion. The results of flight test show that the stalling characters of Y7 - 200B aircraft meet the requirements of FAR 25/CCAR - 25. This paper is based on the result of flight test, according the flight test results of Y7-200B aircraft,comparing with the prototype, this paper analyses aircraft's fundamental stalling characters and it's contributing factors in a view of aerodynamic design of aircraft.