Optimization of electric motor for a solar airplane application
This paper presents a method to model and optimize brushless dc motor for a solar airplane. In order to obtain the optimal solution for the given specifications, all free parameters are analyzed globally in one go. For this, the commercial optimization software Pro@Design is used. The method is fully analytical and deterministic. The actual multiphysic model comprises electromagnetic, thermal, and propeller models. Different results of the design of solar airplane motor using this method are presented
Brushless DC Motor Optimization Process - Choice between Standard or Straight Tooth Shape
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 around-the-world flight in so as to promote the sustainable development. The aircraft power train consists of solar cells placed on the wings, the energy storage system, the energy management electronics, the brushless DC motor and propellers. This paper presents the method to optimize the motor together with the propellers, to save the maximum of energy in the power train. Two different tooth shapes are considered, straight and standard. The conclusion is surprising, as the better results are obtained with the straight tooth shape, although the mutual flux is smaller in this case. The optimization process shows a potential to analyze simultaneously all the parameters to determine the optimum
Teaching self-care to delinquent adolescents.
Adolescent delinquency is an ever-increasing societal concern. Certain health problems are concentrated in the delinquent population. Families of delinquent youths often fail to reinforce self-care. Therefore health care providers need to focus on ways to teach delinquent adolescents to care for themselves. This article reviews delinquency and characteristics of juvenile delinquents and their families. A model is presented to guide health care providers to assess delinquent adolescents' abilities to care for themselves and to teach them strategies for self-care.