电传飞机迎角限制器试飞验证方法研究

Flight Test Demonstration Method Research on AOA Limiter of FBW Aircraft

电传飞机迎角限制器是大迎角飞行控制律的重要组成部分,迎角限制器功能可以有效地保证飞机的飞行安全。GJB3814-1999中对于迎角限制器的验证提出了明确的要求,在试飞中必须针对迎角限制器开展飞行验证。根据某型飞机的气动特性、控制律设计原理,开展了飞行仿真试验验证,提出了合理的试飞方法,制定了合理的测试方案和试飞方案。在试飞过程中循序渐进地开展试飞,有效地规避了意外进入失速尾旋等试飞风险,保证了试飞安全,全面验证了某型飞机的迎角限制器功能的可靠性和有效性,为电传飞机迎角限制器试飞提供了技术支持。

Angle Of Attack （AOA） limiter is an important part of high AOA flight control law of Fly-By-Wire （FBW） aircraft. A well-designed AOA limiter can assure flight security effectively. The requirements about AOA limiter in GJB 3814-1999 is very clear and it must be demonstrated by flight test. Based on aerodynamics and flight control law design of certain aircraft, flight simulation was developed and flight test method was proposed. Measurement method and flight scheme were developed. Flight test was carried out step by step to avoid accidental stall/spin risk. The reliability and effectiveness of AOA limiter of certain FBW aircraft were validated by flight test. The flight test method can provide technique support for AOA limiter demonstration of FBW aircraft.