Dynamic Response Simulation and Analysis of Highly Maneuverable Aircraft in the Presence of Control Devices Failures

摘要

A highly maneuverable aircraft, such as fighter aircraft, relies significantly on the performance of its control devices for executing aggressive and non-conventional maneuvers, and also for executing other routine tasks. Any defect or failure that may happen on the control device actuators can reduce the controllability of the aircraft, even can bring it to a catastrophic condition. A study on the effect of defected/failure control device has on the aircraft closed-loop response during some predefined maneuvers is described in this paper. It is intended to identify and analyze the aircraft dynamic behavior when one of its control surfaces is failed in particular flight phases. The failure is modeled as changes in the dynamic characteristics of the actuator, which is affected by the load generated on the control surface during maneuvers. The change of the actuator behavior affects the performance of the closed- loop system and may result in excessive control command/deflection in order to maintain control authority. The proposed approach may be exploited to examine the effect of control device failures has on the performance of fighter aircraft in executing a mission.