Considerable growth in the number of passengers and cargo transported by air is predicted. Besides that, aircraft noise and climate impact become increasingly important factors in aircraft design. These existing challenges in aviation boost interest in the design of innovative aircraft configurations. One of these configurations is a V-shaped flying wing named the Flying-V. This work aims at developing a flight dynamic simulation model of the Flying-V based on aerodynamic data obtained from the Vortex Lattice Method and wind tunnel experiments. The simulation model is used to assess the stability and handling qualities for certification and qualification purposes. Prior work has shown an assessment of the stability and handling qualities based on a linear aerodynamic model. However, to capture the longitudinal undesired behaviour of the Flying-V it is necessary to use a nonlinear aerodynamic model. Therefore, this paper illustrates how a flight dynamic simulation model, based on combined aerodynamic data from the Vortex Lattice Method and wind tunnel experiments, is used for certification and qualification purposes. The stability and handling qualities are assessed by analysing the aircraft dynamic modes and analysing nonlinear system handling qualities based on linearisation for both the cruise and approach condition.
Considerable growth in the number of passengers and cargo transported by air is predicted. Moreover, aircraft noise and climate impact become increasingly important factors in aircraft design. These existing challenges in aviation boost interest in the design of innovative aircraft configurations. One of these configurations is a V-shaped flying wing named the Flying-V. This work aims at developing a flight control system for the Flying-V that can be used to improve the stability and handling qualities of the aircraft. Prior work shows that the Flying-V is not able to adhere to all stability and handling quality requirements at the forward and aft centre of gravity location during cruise and approach. This paper illustrates how an Incremental Nonlinear Dynamic Inversion flight control system can be used to improve the stability and handling qualities of the aircraft. Furthermore, the robustness of the flight control system is assessed by analysing the effects of aerodynamic uncertainty on the attitude tracking error of the Flying-V. Upon implementation of the flight control system, this research shows that the eigenmodes become stable. Besides that, the flight control system is proved to be robust against aerodynamic uncertainty.
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