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Dynamic Design of a Cube-Shaped Satellite Excited by Launch Vibrations”

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Dynamic Design of a Cube-Shaped Satellite Excited by Launch Vibrations” UNIVERSITAT POLITÈCNICA DE VALÈNCIA ESCUELA TÉCNICA SUPERIOR DE INGENIERÍA DEL DISEÑO PROYECTO FIN DE CARRERA “DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS” ALUMNOS: FRAILE IZQUIERDO, SERGIO PILA VIGALONDO, ALEJANDRO DIRECTOR: DR. D. ANDRÉS ROVIRA CARDETE INGENIERÍA AERONÁUTICA DICIEMBRE DE 2014 DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS “Picture, if you will, a multi–million euro altar to the triumph of function over form, precisely oriented and silently gliding on its orbit around Earth in a smooth, graceful state of free fall. Satellites appear serene and fragile in their often ungainly forms, designed for a life in orbit, untroubled by the Earth–bound stresses of gravity and vibration. But they are not.” Julian Simpson ETSID - UPV DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS ETSID - UPV DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS Foremost, we would like to express our sincere gratitude to our advisor, director and friend, Dr. D Andrés Rovira Cardete for the continuous and valuable support of this Final Project. He did an excellent guidance job and provided us with an excellent work atmosphere. Without his help this could not have been possible. We would also like to thank our family and friends, teachers and people that have helped us out one way or another to fulfil this Final Project. Thank you all. ETSID - UPV DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS ETSID - UPV DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS FINAL PROJECT FINAL PROJECT i ETSID - UPV DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS FINAL PROJECT ii ETSID - UPV DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS Table of Contents 1 Introduction ................................................................................................................................. 13 2 Objective and Scope .................................................................................................................. 15 3 Motivation .................................................................................................................................... 17 3.1 Technical Motivation ......................................................................................................................... 17 3.2 Academic Motivation ......................................................................................................................... 17 4 Project Overview ........................................................................................................................ 19 5 Background on Satellite Missions ........................................................................................ 21 5.1 UPMSAT................................................................................................................................................... 21 5.2 ANUSAT ................................................................................................................................................... 22 5.3 SUNSAT.................................................................................................................................................... 22 5.4 SSTL MicroSat Family ........................................................................................................................ 23 5.5 TATYANA 1 ............................................................................................................................................ 24 5.6 Oculus–ASR ............................................................................................................................................ 25 5.7 HiakaSat .................................................................................................................................................. 26 5.8 DANDE ..................................................................................................................................................... 26 5.9 Rising 2 .................................................................................................................................................... 27 6 Regulations .................................................................................................................................. 29 6.1 Ariane–5 Regulations ........................................................................................................................ 29 6.1.1 Center of Gravity Position ....................................................................................................... 29 6.1.2 Inertia .............................................................................................................................................. 29 6.1.3 Dimensions .................................................................................................................................... 29 6.1.4 Natural Frequency Requirements ........................................................................................ 29 6.1.5 Quasi–static Loads ...................................................................................................................... 30 6.1.6 Sine–equivalent dynamics....................................................................................................... 30 6.1.7 Random vibration ....................................................................................................................... 31 6.1.8 Shocks .............................................................................................................................................. 31 6.2 Soyuz Regulations ............................................................................................................................... 31 6.2.1 Center of Gravity Position ....................................................................................................... 32 6.2.2 Inertia .............................................................................................................................................. 32 6.2.3 Dimensions .................................................................................................................................... 32 6.2.4 Natural Frequency Requirements ........................................................................................ 32 6.2.5 Quasi–static Loads ...................................................................................................................... 32 6.2.6 Sine–equivalent dynamics....................................................................................................... 33 6.3 VEGA Regulations................................................................................................................................ 33 6.3.1 Center of Gravity Position ....................................................................................................... 34 6.3.2 Inertia .............................................................................................................................................. 34 6.3.3 Sine–equivalent dynamics....................................................................................................... 34 6.3.4 Random vibration ....................................................................................................................... 34 6.3.5 Acoustic vibration ....................................................................................................................... 35 6.3.6 Shocks .............................................................................................................................................. 35 6.4 DNEPR Regulations ............................................................................................................................ 36 6.4.1 Natural Frequency Requirements ........................................................................................ 36 FINAL PROJECT iii ETSID - UPV DYNAMIC DESIGN OF A CUBE-SHAPED SATELLITE EXCITED BY LAUNCH VIBRATIONS 6.4.2 Quasi–static Loads ...................................................................................................................... 36 6.4.3 Sine–equivalent dynamics....................................................................................................... 37 6.4.4 Random vibration ....................................................................................................................... 38 6.4.5 Acoustic vibration ....................................................................................................................... 38 6.4.6 Shock ................................................................................................................................................ 39 6.5 Selection of the launcher .................................................................................................................. 39 7 Microsatellites ............................................................................................................................ 41 7.1 Definition ................................................................................................................................................ 42 7.2 Applications ........................................................................................................................................... 42 7.3 Subsystems ...........................................................................................................................................
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