Round the world flight with a solar aircraft: complex system optimization process Yves Perriard, Senior Member, Patrick Ragot, Student Member, Miroslav Markovic, Member Ecole Polytechnique F6d6rale de Lausanne (EPFL)

In order to create a new solar aircraft totally powered by the sun, a new method able to handle such a complex system must be developed. The project aim is to make a round-the-world flight in order to promote the sustainable development. The aircraft power train will consist of solar cells placed on the wings, the energy storage system, the energy management electronics, the brushless DC motor and propellers. The aim of this paper is to present the method to optimize the motor together with the propellers, in order to save the maximum of energy in the power train. The explained method is also applied to design of a small electric motor such as blood pump motor