A Real-Time Comparative Analysis Method of Lift Coefficient for Artificial Ice Flight Test

Abstract

Although the artificial ice flight test is a pre-flight test for the natural icing flight test, it is still a high-risk flight test. In order to reduce the risk of flight test, this paper proposes a method to compare and analyze the actual lift coefficient and design lift coefficient of the test aircraft in real time according to the current flight state of the test aircraft. This method takes the telemetry data of the test aircraft as the input, and uses the filtering and noise reduction algorithm to improve the data quality. According to the test data such as overload, the actual lift coefficient of the test aircraft can be calculated, while the design lift coefficient can be calculated according to the flight state and the deflection angle of control surfaces. By comparing the two in real time, it is possible to analyze whether the state of the test aircraft deviates from the design value in real time, and provide a reference for the real-time flight test safety assessment.