Flying Qualities Analysis of Advanced Teaching Aircraft Based on Equivalent System

Abstract

In order to meet the requirements of increasing domestic airline pilot training and flight safety, airline pilot training departments pay special attention to flying qualities of advanced teaching aircraft. According to the application of equivalent systems in aircraft flying quality evaluation system, the selection method of initial value and equivalent system and the evaluation index of equivalent systems are analyzed. A modeling and simulation example is given to an advanced teaching aircraft, and it increasingly demonstrates that the adoptive equivalent system method applied to flying quality evaluation of advanced teaching aircraft is feasible.

An Efficient Hierarchical Identification Method With Kernel-Based SVM for Equivalent Systems of Aircrafts

“…Since aircrafts in early times showed simple dynamic characteristics, LOES models proved to be effective for flying qualities analysis, and then the criteria MIL-F-8785C acknowledged the existence of high order systems and defined the LOES models that most approximate the responses of the actual aircrafts. Many flight test researches have proved that the LOES models can be used to analyze flying qualities for an un-augmented aircraft with classical dynamic response [1]- [3], which is in reality of high order and nonlinear especially for modern fighters. In addition, the LOES model provides information on the order of state space model and initial values of some aerodynamic derivatives, so the LOES model is an important intermediate result for flight mechanics characterization studies [4]- [6].…”