Progressive identification of lateral nonlinear unsteady aerodynamics from wind tunnel test data

• 来源期刊: 中国科学:化学（英文版）
• 年，卷（期）: 2019,（10）
• 页码范围: 193-195
• 页数: 3页
• 语种: 英文

摘要

Dear editor, Modern aircrafts have been increasingly demanded to extend the flight envelop to high incidences.The super maneuverability at post-stall angles of attack has become the dominated design goal for advanced combat aircrafts.In this case,the aerodynamic response will present strong nonlinearity and unsteadiness.The conventional aerodynamic derivative model could not be applicable any more.The modeling and identification of nonlinear unsteady aerodynamics has become a realistic challenge and the accurate modeling is of great value for aircraft control law design and flight simulation.There are mainly four models for unsteady aerodynamics:indicial response [1,2],statespace [3],differential equation [4,5],and artificial intelligence [6,7].