Simulation Model Development of a Subscale Fighter Demonstrator : Aerodynamic Database Generation and Propulsion Modeling
Sammanfattning: The main objective of this thesis was to improve the simulation model of a subscale fighter demonstratorthat had been developed previously. In order to give a reliable result, the simulation model should be modeled correctly and employ accurate input. To fulfill this objective two approaches was performed, the first was by providing the aerodynamic derivatives database in order to be implemented in the simulation model, and the second process is to improve the propulsion module of the simulation model. The aerodynamic database was generated by several VLM and panel method software, namely Tornado, VSPAero and XFLR5, which uses subscale fighter demonstrator called Generic Future Fighter (GFF) as the aircraft model. The results from different methods and software were then compared first before it was implemented to the simulation model. The second process includesenhancing the propulsion model and implementation of the aerodynamic database.The propulsion model enhancement covers the improvement of thrust modeling and development of fuel consumption model. Additionally, the aerodynamic database implementation was executed by connecting the external sets of the database into the simulation model automatically. The verification process was performed by comparing the result of the simulation model against recorded flight data, also by comparing the improved and the previous simulation model result to see the effect of improvement that was carried out. Using the improved model of engine thrust and fuel consumption model, the propulsion module can produce a reliable outcome of forces and moments computation. Moreover, theimplementation of the aerodynamic database also gives a significant improvement in the simulation model result.
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