Aerodynamic Databank Modeling for Development of a Short-Haul Electric Airliner
Typ
Examensarbete för masterexamen
Program
Applied mechanics (MPAME), MSc
Publicerad
2022
Författare
Johansson, Anna
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
To the support development of a new airplane, an aerodynamic databank model was
developed. The airplane’s performance, stability, control, and handling qualities are
analyzed by using a six degrees of freedom airplane model. One of the subsystems
to this flight simulation model is the aerodynamic databank model which provides
the aerodynamic forces and moments acting on the airplane. Essentially, the aero dynamic databank model is composed of different contributions to the six total
aerodynamic coefficients which determine the loads on the airplane. This compo nent buildup method gives a modular architecture of the databank model and makes
it easy to add aerodynamic effects to specific airplane components and aerodynamic
coefficients. The total aerodynamic coefficients are the aggregate of the coefficient
contributions of individual airplane components due to the relevant aerodynamic
effects. In general, the aerodynamic coefficients are functions of a large number of
variables, including the angle of attack, side slip angle, speed, deflection of flaps
and control surfaces, deployment of landing gear, and proximity to the ground. To
cover an entire arbitrary flight, the computational fluid dynamics (CFD) data is
combined with mathematical, semi-empirical, and empirical methods for modeling
additional aerodynamic effects which were not considered in the CFD simulations.
In the design phase of the airplane, this approach is particularly advantageous as it
reduces the computational cost related to CFD and allows for rapid evaluations of
design updates.
Beskrivning
Ämne/nyckelord
aerodynamic databank, aerodynamic modeling, flight dynamics, aircraft development, component buildup method, stability derivatives, aerodynamic coeffi cients, in-flight icing, electric airplane