A long time ago, since the launch of the first artificial satellite in 1957, controling attitude of satellites has been considered by the designers and engineers of aerospace industry. Considering the importance of this issue various methods of control in response to this need have been presented and analyzed until now. In this paper, we propose and analyze a three-axis optimal control on the s...

Copyright c ©2017 by the Aerospace Plasma Laboratory, Technion. Published by the Electric Rocket Propulsion Society with permission. A multiscale model was developed for the channel of a CoAxial Magnetically Insulated Long Anode (CAMILA) Hall effect thruster. The computational domain was subdivided into a region where a hybrid solver is used and a region where a fully kinetic particle in cell s...

The high cost of wind tunnel testing and the ongoing reduction in national wind tunnel facilities are forcing the aerospace engineering community to increasingly rely on computational fluid dynamics (CFD) to predict the performance of new aircraft designs. However, most aerospace applications are characterized by flows that exhibit large-scale unsteady turbulence and the accurate prediction of ...

This paper proposes a fuzzy logic approach to allow qualitative symptoms that have been generated from order of magnitude qualitative simulation to be utilised as a fault detecting diagnostic system. The symptoms are interpreted as fuzzy rules and this allows numerical observations to be used as input to the symptoms and a ranking of faults as the output. The rule based approach results in a co...

The computer simulation activities which have been carried out at The Aerospace Corporation for satellite link performance studies and system analysis are reported. A brief description of the modelings of a filter, nonlinear device, modulator, detector and receiver is also given. Some results from the simulation studies, such as the basic link performance in the presence of filters and nonlinea...

Abstract This paper proposes an integrated simulation method of the performance and reliability for aerospace electromechanical products, which can obtain parameters product through digital simulation, so as to guide design product, taking into account factors that affect in stage. is based on a multidisciplinary model, comprehensively considers failure mode mechanism product. Through DESIGN OF...

In this investigation, a T-shaped aluminum alloy isogrid stiffener element used in aerospace applications was inspected with ultrasonic phased array methods. The isogrid stiffener element had various crack configurations emanating from bolt holes. Computational simulation methods were used to mimic the experiments in order to help understand experimental results. The results of this study indic...