Validation using performance reference data of an Airbus A320 performance model for flight simulation
Tutor / director / evaluatorPrats Menéndez, Xavier
Document typeBachelor thesis
Rights accessOpen Access
The aim of this project is to improve the performance model of the QPAC (QualityPark AviationCenter) A320 in X-Plane flight simulator. In order to achieve it, tables generated with Airbus PEP (Performance Engineering Program tool) have been used. The process followed consists in using PEP tables as look-up tables for the simulator, so that via a plugin it is possible to move this data from PEP to X-Plane. It is of great interest to have a correct performance model in the simulator, as it will lead to more accurate results when testing new aeronautical concepts with flight simulations. In this project it will be shown as an example how the improvement of the model allows to obtain better results in a CDO (Continuous Descent Operations) simulation with X-Plane. The performance model in X-Plane is based in blade element theory, which is one of the big differences with the other flight simulators available nowadays. Although the results are quite good in most of the aspects of the simulation, there are great inaccuracies when it comes to model transonic and supersonic effects. In addition, thrust values are not very good neither. The performance corrections have been applied on drag and idle thrust. PEP tables have been moved to header files in C++ so that an X-Plane plugin can read them easily. In the drag case, drag coefficients are read given Mach number and lift coefficient as input values while in the idle trust case, idle thrust values are read given Mach number and altitude as input values. After applying the corrections, it has been observed a big improvement in both drag and idle thrust values, with low errors when comparing with PEP data. However, there are still some inaccuracies in the model, so some future work will be needed.