Download or read book Design of Subsystems for a Representative Modern LEO Satellite written by Mark Werremeyer and published by . This book was released on 2013 with total page 99 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis discusses the design of subsystems for a representative modern low Earth Orbit (LEO) satellite. Specifically, the subsystems presented were designed for inclusion on DebriSat, a 50 kg satellite intended to be representative of modern LEO satellites ranging from 1-5000 kg terms of its components, materials used, and fabrication procedures. A LEO satellite survey was conducted that utilized the Union of Concerned Scientists (UCS) satellite database, with selected satellites emphasizing those launched after 1990 and next-generation satellites expected to launch in the near future. Specifically, fifty U.S. and European satellites were studied in detail to determine appropriate subsystems and components for use in a representative modern LEO satellite. As a result of this study and further consultation with subject-matter experts, particular components and subsystems were down selected for inclusion in the DebriSat design (e.g. sun sensors and reaction wheels are implemented rather than horizon sensors and passive magnetics due to their prevalence on the satellites surveyed). After these components were determined, they were integrated into complete subsystem designs. Finally, this thesis details how these representative components and subsystems are to be fabricated. Due to the prohibitively high costs of flight hardware, donated and rejected flight units are used in some instances, while non-functional emulations are used in others. DebriSat is a collaborative effort with NASA Orbital Debris Programs Office, the USAF Space and Missile Systems Center, and The Aerospace Corporation.