Advanced methods for organizing thermal protection of hypersonic aircrafts

islanding detection methods for microgrids

امروزه استفاده از منابع انرژی پراکنده کاربرد وسیعی یافته است . اگر چه این منابع بسیاری از مشکلات شبکه را حل می کنند اما زیاد شدن آنها مسائل فراوانی برای سیستم قدرت به همراه دارد . استفاده از میکروشبکه راه حلی است که علاوه بر استفاده از مزایای منابع انرژی پراکنده برخی از مشکلات ایجاد شده توسط آنها را نیز منتفی می کند . همچنین میکروشبکه ها کیفیت برق و قابلیت اطمینان تامین انرژی مشترکان را افزایش ...

High-order shock-fitting methods for hypersonic flow with chemical and thermal nonequilibrium

Computer simulations have been an effective tool to study transient flow processes in hypersonic flow and have been complementing experimental and theoretical studies to better understand the flow transition process. There have been lots of efforts in code development for high order simulation of nonequilibrium flow but most of the methods are based on shock capturing ideodology. Shock capturin...

Advanced Control and Protection System Design Methods for Modular HTGRs

Advanced data exploration methods based on Self - Organizing Maps

Self-Organizing Maps are an important data mining method for extracting information from a data set. In this thesis, three techniques that are based on SOMs are introduced for helping to understand large amounts of data. Two of them are visualization techniques for SOMs, while the third is a classification method for two-class problems inspired by the SOM training algorithm. The first of the pr...

Simulation of an Ablative Thermal Protection System for the Hypersonic Ascend of an Electromagnetically Launched Payload Carrier

Abstract The German Aerospace Center is carrying out a study to develop a small payload carrier for the ascent to low earth orbit. The vehicle shall be electromagnetically launched by a Lorentz Rail Accelerator. Additionally, it will be propelled by a two stage hybrid rocket engine system to reach the desired orbit. Due to the high initial velocity of about 3.3 km/s at sea level, the vehicle ne...