Petter Krus
Department of Management and Engineering, Linköping University, Linköping, Sweden
Alvaro Abdallah
Department of Management and Engineering, Linköping University, Linköping, Sweden
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http://dx.doi.org/10.3384/ecp19162003Published in: FT2019. Proceedings of the 10th Aerospace Technology Congress, October 8-9, 2019, Stockholm, Sweden
Linköping Electronic Conference Proceedings 162:3, p. 30-34
Published: 2019-10-23
ISBN: 978-91-7519-006-8
ISSN: 1650-3686 (print), 1650-3740 (online)
In this paper a comprehensive set of models of aerodynamics for conceptual design that also can be used for flight simulation is presented. In particular these are transonic/supersonic lift coefficient, moment and induced drag. The models are based on a range of models found in literature that have been compiled and reformulated to be more practical to use. Many models in literature exhibit discontinuities or infinities e.g. around Mach one. Care has to be taken to formulate benign expressions that can be used in all parts of the flight envelope. One observation is that models are showing that induced drag have a significant influence on supersonic performance, especially at high altitude and with elevated load factor. The models are implemented in a simulation model so that performance can be evaluated at a mission level.
