Colloquium: Pepijn Scholten (C&O)

24 januari 2019 14:00 - Locatie: Lecture Room C, FACULTY OF AEROSPACE ENGINEERING, KLUYVERWEG 1,

A Variable Stability In-Flight Simulator using Incremental Non-Linear Dynamic Inversion

A variable stability in-flight simulator is a system which has the capabilities to change the response of an aircraft in-flight, often without changing the physical properties of the aircraft. The response characteristics and handling qualities can therefore be adjusted, which can be used for many different purposes like pilot training, control logic development and handling quality research. A variable stability control system is designed for a medium range business jet using Incremental Non-linear Dynamic Inversion. The performance of the in-flight simulator is verified by two experiments, one conducted in a fixed-base simulator and one in the Cessna Citation II business jet. The experiment in the simulator shows differences between the experienced handling qualities for a reference model and the designed controller combined with aircraft dynamics. These differences mainly arise due to actuator saturation for specific handling quality settings. The experiment in-flight supports the performance of the controller in the simulator but also reveal that the envelope around the initial condition is quite limited due to the limits of the fly-by-wire system.