d'Argenio, Alessandro (2015) Computational Fluid Dynamics in support to Flight Test Experiments using Optimization Techniques. [Tesi di dottorato]

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Abstract

Flight testing continues to remain an essential step in the development or modification of an aircraft. Modern fixed wing aircrafts, especially mitary jet aircrafts, are highly complex systems that push the edges of aerodynamic, propulsion, and control system technologies. The ever-increasing complexity of the aircrafts presents new challenges to those who are involved in the flight testing of those vehicles. Over the last 40 years, simulation has played a vital role in increasing the safety and the efficiency of flight testing. Modeling and Simulation (M&S) is a tool to support testing and its use has improved flight test planning, execution and safety. The incredible growth in computational capabilities has created also new possibilities on how M&S can be used to support flight testing. Even with improved computers, high-fidelity simulations still depend on the ability of the engineering team to create models that accurately represent the aircraft or the environment that they are testing. Simulation is a tool that greatly improves the efficiency and the effectiveness of a flight test program, but it must be used in conjunction and in coordination with the actual testing. As the aircrafts continue to evolve in complexity, the role of simulation continues to grow. Every major aircraft developer, whether they are commercial or military, depends on the use of simulation to some degree. The application of these simulations to flight testing is an important aspect of the aircraft's development. Many of the technical disciplines involved with the aircraft development make use of simulation. In flight testing, simulation is especially used to support structures and flutter tests, stores separation tests, as well as total weapon system's effectiveness tests. Simulation in support of flight testing is here to stay, and there is a growing to demand to further increase its use. The purpose of this thesis is to illustrate how simulation can be effectively used to support flight testing of fixed-wing military aircrafts and what should be considered when developing a simulation that is used to support flight test. In particular, the contribution of M/S in support to store integration and separation activities will be carried out.

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