Traditional commercial aircraft design attempts to improve performance and reduce operating costs by minimizing takeoff weight. A better design approach also takes into account factors such as aircraft demand, market uncertainty, and development and manufacturing costs. This paper presents a design methodology that integrates an aircraft performance model with a program valuation technique base...

We present a design optimization method of H-plane waveguide components, based on the level set method with the finite element method. In this paper, we propose a new formulation for the improvement of a level set function, which describes shape, location, and connectivity of dielectric in a design region. Employing the optimization procedure, we demonstrate that optimized structures of an H-pl...

The Advanced Photon Source is the brightest storage ring synchrotron radiation source in the western hemisphere. It is presently in the midst of an upgrade to deliver even higher performance and powerful new capabilities for scientific research using hard x-ray techniques. Recently, it has become accepted that a new avenue for creating high brightness x-ray beams is opening up, based on technol...

133 Curriculum Vitae 135

Recent advances in tokamak physics can be used in the quest to optimize the stellarator concept. In particular the experimental confirmation of strong bootstrap currents suggests the possibility of taking advantage of non-zero current in steady-state stellarators. In addition the observation of neoclassical islands suggests important issues for design optimization, in order to operate in a regi...

We present and discuss the fabrication process and the performance of a flexible micro thermoelectric generator with electroplated Bi2+xTe3-x thermocouples in a SU-8 mold. Demonstrator devices generate 278μWcm at ∆Tmeas=40K across the experimental set up. Based on model calculations, a temperature difference of ∆TG=21.4K across the generator is assumed. Due to the flexible design and the chosen...

This paper presents the evaluation of different MDO architectures using an extended set of metrics, which take into consideration optimization and formulation structure characteristics. Demonstrative comparisons are made for analytic and supersonic business jet conceptual design examples. Results show the promising features of the proposed evaluation metrics to define a standardized guideline w...

An aircraft is a multifaceted product which requires cooperation between different engineering domains. Therefore, design of an aircraft is essentially a multidisciplinary activity with necessity of integrating different design tools to get an optimized product. At Linköping University, a design framework is being developed to assist in the evaluation and optimization of various aircraft vehicl...

This paper addresses the architecture optimization of a 3-DOF translational parallel mechanism designed for machining applications. The design optimization is conducted on the basis of a prescribed Cartesian workspace with prescribed kinetostatic performances. The resulting machine, the Orthoglide, features three fixed parallel linear joints which are mounted orthogonally and a mobile platform ...