DOCSLIB.ORG

OBC) for a Cubesat

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
OBC) for a Cubesat RIGH Development of an onboard computer (OBC) for a CubeSat by LWABANJI TONY LUMBWE Thesis submitted in fulfilment of the requirements for the degree Master of Technology: Electrical Engineering in the Faculty of Engineering at the Cape Peninsula University of Technology Supervisor: Prof Richardt Wilkinson Co-supervisor: Prof Elmarie Biermann Bellville May 2013 DECLARATION I, Lwabanji Tony Lumbwe, declare that the contents of this thesis represent my own unaided work, and that the thesis has not previously been submitted for academic examination towards any qualification. Furthermore, it represents my own opinions and not necessarily those of the Cape Peninsula University of Technology. Signed Date Copyright © 2013 Cape Peninsula University of Technology All rights reserved. ii ABSTRACT Over the past decade, the satellite industry has witnessed the birth and evolution of the CubeSat standard, not only as a technology demonstrator tool but also as a human capacity development platform in universities. The use of commercial off the shelf (COTS) hardware components makes the CubeSat a cost effective and ideal solution to gain access to space in terms of budget and integration time for experimental science payloads. Satellite operations are autonomous and are essentially based on the interaction of interconnected electronic subsystems exchanging data according to the mission requirements and objectives. The onboard computer (OBC) subsystem is developed around a microcontroller and plays an essential role in this exchange process as it performs all the computing tasks and organises the collection of onboard housekeeping and payload data before downlink during an overpass above the ground station. The thesis here presented describes the process involved in the development, design and implementation of a prototype OBC for a CubeSat. An investigation covering previously developed CubeSat OBCs is conducted with emphasis on the characteristics and features of the microcontroller to be used in the design and implementation phases. A set of hardware requirements are defined and according to the current evolution on the microcontroller market, preference is given to the 32-bit core architecture over both its 8-bit and 16-bit counterparts. Following a well defined selection process, Atmel’s AT91SAM3U4E microcontroller which implements a 32-bit Cortex-M3 core is chosen and an OBC architecture is developed around it. Further, the proposed architecture is implemented as a prototype on a printed circuit board (PCB), presenting a set of peripherals necessary for the operation of the OBC. Finally, a series of tests successfully conducted on some of the peripherals are used to evaluate the proposed architecture. Keywords: CubeSat, OBC, COTS, Microcontroller. iii ACKNOWLEDGEMENTS The completion of this thesis would not have been feasible without the support, inspiration and encouragement of the following people and organisations to whom I would like to express my sincere gratitude: My supervisors Prof Richardt Wilkinson and Prof Elmarie Biermann for their patience, guidance and support; The French South African Institute of Technology (F’SATI) in particular Prof Robert Van Zyl, Prof Elmarie Biermann, Mr Francois Visser and Mr Ian Van Zyl for giving me the opportunity to complete my Masters degree on a full-time basis; The Centre for Instrumentation Research (CIR) staff, store members and students, in particular Khaleel Jooste for his ongoing assistance; My family in particular my brother Sean (Zed) Lumbwe and my sister Lydia (LaDiva) Lumbwe for their never ending motivation and encouragement; Everyone who took interest in my project; And most importantly, my Saviour, Lord Jesus Christ, for giving me the strength to complete this thesis in time. Special thanks to my colleagues Gavin Mutch and Gary de Villiers. The financial assistance of the National Research Foundation and F’SATI towards this research is acknowledged. Opinions expressed in this thesis and the conclusions arrived at, are those of the author, and are not necessarily to be attributed to the respective mentioned establishments. iv DEDICATION This thesis is dedicated to my mother LWABANDJI KINDJA ESTHER, who taught me that the best kind of knowledge to have is that which is learned for its own sake and even the largest task can be accomplished if it is done one step at a time. To my late cousin CHOGO CA LWABANDJI, Rest in Peace. v TABLE OF CONTENTS DECLARATION ............................................................................................................................ ii ABSTRACT ................................................................................................................................ iiii ACKNOWLEDGEMENTS ........................................................................................................... iv DEDICATION ................................................................................................................................ v GLOSSARY .................................................................................................................................. x LIST OF FIGURES .................................................................................................................... xiii LIST OF TABLES ....................................................................................................................... xv INTRODUCTION .......................................................................................................................... 1 1.1. Overview ......................................................................................................................... 1 1.2. Background .................................................................................................................... 1 1.3. Research focus and motivation ...................................................................................... 3 1.4. Objectives of the research .............................................................................................. 5 1.5. Significance and contribution .......................................................................................... 5 1.6. Methodology ................................................................................................................... 6 1.7. Research delineation ...................................................................................................... 7 1.8. Thesis outline ................................................................................................................. 8 1.9. Summary ........................................................................................................................ 8 LITERATURE REVIEW ................................................................................................................ 9 2.1. Introduction ..................................................................................................................... 9 2.2. The CubeSat platform .................................................................................................... 9 2.2.1. CubeSat architecture and subsystems .................................................................. 10 2.2.1.1. Electrical power system ......................................................................................... 10 2.2.1.2. Communications Subsystem ................................................................................. 11 2.2.1.3. ADCS subsystem .................................................................................................. 12 2.2.1.4. Payload subsystem ............................................................................................... 13 2.2.1.5. OBC and memory module ..................................................................................... 14 2.2.2. Previously deployed CubeSat OBCs ..................................................................... 18 2.2.3. CubeSat hardware kits .......................................................................................... 19 vi 2.2.4. PC/104 standard ................................................................................................... 21 2.2.5. CubeSat deployment system ................................................................................ 22 2.3. Space environment effects ........................................................................................... 23 2.3.1. Atmospheric drag and atomic oxygen ................................................................... 23 2.3.2. Solar wind and solar flares .................................................................................... 24 2.3.3. Electromagnetic waves in free space .................................................................... 24 2.3.4. Semiconductors in space ...................................................................................... 24 2.3.5. Space debris ......................................................................................................... 25 2.4. Summary ...................................................................................................................... 26 MICROCONTROLLER SELECTION ......................................................................................... 27 3.1. Introduction ................................................................................................................... 27 3.2. Analysis of selection criteria ........................................................................................
Load more

Recommended publications
  • A Survey and Assessment of the Capabilities of Cubesats for Earth Observation
    Acta Astronautica 74 (2012) 50–68 Contents lists available at SciVerse ScienceDirect Acta Astronautica journal homepage: www.elsevier.com/locate/actaastro Review A survey and assessment of the capabilities of Cubesats for Earth observation Daniel Selva a,n, David Krejci b a Massachusetts Institute of Technology, Cambridge, MA 02139, USA b Vienna University of Technology, Vienna 1040, Austria article info abstract Article history: In less than a decade, Cubesats have evolved from purely educational tools to a standard Received 2 December 2011 platform for technology demonstration and scientific instrumentation. The use of COTS Accepted 9 December 2011 (Commercial-Off-The-Shelf) components and the ongoing miniaturization of several technologies have already led to scattered instances of missions with promising Keywords: scientific value. Furthermore, advantages in terms of development cost and develop- Cubesats ment time with respect to larger satellites, as well as the possibility of launching several Earth observation satellites dozens of Cubesats with a single rocket launch, have brought forth the potential for University satellites radically new mission architectures consisting of very large constellations or clusters of Systems engineering Cubesats. These architectures promise to combine the temporal resolution of GEO Remote sensing missions with the spatial resolution of LEO missions, thus breaking a traditional trade- Nanosatellites Picosatellites off in Earth observation mission design. This paper assesses the current capabilities of Cubesats with respect to potential employment in Earth observation missions. A thorough review of Cubesat bus technology capabilities is performed, identifying potential limitations and their implications on 17 different Earth observation payload technologies. These results are matched to an exhaustive review of scientific require- ments in the field of Earth observation, assessing the possibilities of Cubesats to cope with the requirements set for each one of 21 measurement categories.
    [Show full text]
  • Orbital Lifetime Predictions
    Orbital LIFETIME PREDICTIONS An ASSESSMENT OF model-based BALLISTIC COEFfiCIENT ESTIMATIONS AND ADJUSTMENT FOR TEMPORAL DRAG co- EFfiCIENT VARIATIONS M.R. HaneVEER MSc Thesis Aerospace Engineering Orbital lifetime predictions An assessment of model-based ballistic coecient estimations and adjustment for temporal drag coecient variations by M.R. Haneveer to obtain the degree of Master of Science at the Delft University of Technology, to be defended publicly on Thursday June 1, 2017 at 14:00 PM. Student number: 4077334 Project duration: September 1, 2016 – June 1, 2017 Thesis committee: Dr. ir. E. N. Doornbos, TU Delft, supervisor Dr. ir. E. J. O. Schrama, TU Delft ir. K. J. Cowan MBA TU Delft An electronic version of this thesis is available at http://repository.tudelft.nl/. Summary Objects in Low Earth Orbit (LEO) experience low levels of drag due to the interaction with the outer layers of Earth’s atmosphere. The atmospheric drag reduces the velocity of the object, resulting in a gradual decrease in altitude. With each decayed kilometer the object enters denser portions of the atmosphere accelerating the orbit decay until eventually the object cannot sustain a stable orbit anymore and either crashes onto Earth’s surface or burns up in its atmosphere. The capability of predicting the time an object stays in orbit, whether that object is space junk or a satellite, allows for an estimate of its orbital lifetime - an estimate satellite op- erators work with to schedule science missions and commercial services, as well as use to prove compliance with international agreements stating no passively controlled object is to orbit in LEO longer than 25 years.
    [Show full text]
  • The Annual Compendium of Commercial Space Transportation: 2012
    Federal Aviation Administration The Annual Compendium of Commercial Space Transportation: 2012 February 2013 About FAA About the FAA Office of Commercial Space Transportation The Federal Aviation Administration’s Office of Commercial Space Transportation (FAA AST) licenses and regulates U.S. commercial space launch and reentry activity, as well as the operation of non-federal launch and reentry sites, as authorized by Executive Order 12465 and Title 51 United States Code, Subtitle V, Chapter 509 (formerly the Commercial Space Launch Act). FAA AST’s mission is to ensure public health and safety and the safety of property while protecting the national security and foreign policy interests of the United States during commercial launch and reentry operations. In addition, FAA AST is directed to encourage, facilitate, and promote commercial space launches and reentries. Additional information concerning commercial space transportation can be found on FAA AST’s website: http://www.faa.gov/go/ast Cover art: Phil Smith, The Tauri Group (2013) NOTICE Use of trade names or names of manufacturers in this document does not constitute an official endorsement of such products or manufacturers, either expressed or implied, by the Federal Aviation Administration. • i • Federal Aviation Administration’s Office of Commercial Space Transportation Dear Colleague, 2012 was a very active year for the entire commercial space industry. In addition to all of the dramatic space transportation events, including the first-ever commercial mission flown to and from the International Space Station, the year was also a very busy one from the government’s perspective. It is clear that the level and pace of activity is beginning to increase significantly.
    [Show full text]
  • → Space for Europe European Space Agency
    number 149 | February 2012 bulletin → space for europe European Space Agency The European Space Agency was formed out of, and took over the rights and The ESA headquarters are in Paris. obligations of, the two earlier European space organisations – the European Space Research Organisation (ESRO) and the European Launcher Development The major establishments of ESA are: Organisation (ELDO). The Member States are Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, the ESTEC, Noordwijk, Netherlands. Netherlands, Norway, Portugal, Romania, Spain, Sweden, Switzerland and the United Kingdom. Canada is a Cooperating State. ESOC, Darmstadt, Germany. In the words of its Convention: the purpose of the Agency shall be to provide for ESRIN, Frascati, Italy. and to promote, for exclusively peaceful purposes, cooperation among European States in space research and technology and their space applications, with a view ESAC, Madrid, Spain. to their being used for scientific purposes and for operational space applications systems: Chairman of the Council: D. Williams → by elaborating and implementing a long-term European space policy, by Director General: J.-J. Dordain recommending space objectives to the Member States, and by concerting the policies of the Member States with respect to other national and international organisations and institutions; → by elaborating and implementing activities and programmes in the space field; → by coordinating the European space programme and national programmes, and by integrating the latter progressively and as completely as possible into the European space programme, in particular as regards the development of applications satellites; → by elaborating and implementing the industrial policy appropriate to its programme and by recommending a coherent industrial policy to the Member States.
    [Show full text]
  • Commercial Space Transportation Year in Review
    2007 YEAR IN REVIEW INTRODUCTION INTRODUCTION The Commercial Space Transportation: 2007 upon liftoff, destroying the vehicle and the Year in Review summarizes U.S. and interna- satellite. tional launch activities for calendar year 2007 and provides a historical look at the past five Overall, 23 commercial orbital launches years of commercial launch activity. occurred worldwide in 2007, representing 34 percent of the 68 total launches for the year. The Federal Aviation Administration’s This marked an increase over 2006, which Office of Commercial Space Transportation saw 21 commercial orbital launches (FAA/AST) licensed four commercial orbital worldwide. launches in 2007. Three of these licensed launches were successful, while one resulted Russia conducted 12 commercial launch in a launch failure. campaigns in 2007, bringing its international commercial launch market share to 52 per- Of the four orbital licensed launches, cent for the year, a record high for Russia. three used a U.S.-built vehicle: the United Europe attained a 26 percent market share, Launch Alliance Delta II operated by Boeing conducting six commercial Ariane 5 launches. Launch Services. Two of the Delta II vehi- FAA/AST-licensed orbital launch activity cles, in the 7420-10 configuration, deployed accounted for 17 percent of the worldwide the first two Cosmo-Skymed remote sensing commercial launch market in 2007. India satellites for the Italian government. The conducted its first ever commercial launch, third, a Delta II 7925-10, launched the for four percent market share. Of the 68 WorldView 1 commercial remote sensing worldwide orbital launches, there were three satellite for DigitalGlobe. launch failures, including one non-commer- cial launch and two commercial launches.
    [Show full text]
  • Cubesat Communication Systems 2003-2013: a Historical Look
    CubeSat Communication Systems 2003-2013: A Historical Look Bryan Klofas SRI International [email protected] Nanosatellite Ground Station Workshop San Luis Obispo, California 23 April 2013 Two Survey Papers • “A Survey of CubeSat Communication Systems” – Paper presented at the CubeSat Developers’ Workshop 2008 – By Bryan Klofas, Jason Anderson, and Kyle Leveque – Covers the CubeSats from start of program to 2008 • “A Survey of CubeSat Communication Systems: 2009-2012” – Paper presented at the CubeSat Developers’ Workshop 2013 – By Bryan Klofas and Kyle Leveque – Covers the CubeSats from 2009 to ELaNa-6/NROL-36 launch in 2012 Slide 2 Summary of CubeSat Launches 2003 to 2013 • Eurockot (30 June 2003) • Dnepr Launch 2 (17 Apr 2007) – AAU1 CubeSat – CSTB1 – DTUsat-1 – AeroCube-2 – CanX-1 – CP4 – Cute-1 – Libertad-1 – QuakeSat-1 – CAPE1 – XI-IV – CP3 • SSETI Express (27 Oct 2005) – MAST – XI-V • NLS-4/PSLV-C9 (28 Apr 2008) – NCube-2 – Delfi-C3 – UWE-1 – SEEDS-2 • M-V-8 (22 Feb 2006) – CanX-2 – Cute-1.7+APD – AAUSAT-II • Minotaur 1 (11 Dec 2006) – Compass-1 – GeneSat-1 Slide 3 Summary of CubeSat Launches 2003 to 2013 • Minotaur-1 (19 May 2009) • NLS-6/PSLV-C15 (12 July 2010) – AeroCube-3 – Tisat-1 – CP6 – StudSat – HawkSat-1 • STP-S26 (19 Nov 2010) – PharmaSat – RAX-1 • ISILaunch 01 (23 Sep 2009) – O/OREOS – BEESAT-1 – NanoSail-D2 – UWE-2 • Falcon 9-002 (8 Dec 2010) – ITUpSAT-1 – Perseus (4) – SwissCube – QbX (2) • H-IIA F17 (20 May 2010) – SMDC-ONE – Hayato – Mayflower – Waseda-SAT2 – PSLV-C18 (12 Oct 2011) – Negai-Star – Jugnu Slide 4 Summary
    [Show full text]
  • Aeronautics and Space Report of the President
    Aeronautics and Space Report of the President Fiscal Year 2009 Activities Aeronautics and Space Report of the President Fiscal Year 2009 Activities The National Aeronautics and Space Act of 1958 directed the annual Aeronautics and Space Report to include a “comprehensive description of the programmed activities and the accomplishments of all agencies of the United States in the field of aeronautics and space activities during the preceding calendar year.” In recent years, the reports have been prepared on a fiscal-year basis, consistent with the budgetary period now used in programs of the Federal Government. This year’s report covers Aeronautics and SpaceAeronautics Report of the President activities that took place from October 1, 2008, through September 30, 2009. TABLE OF CONTENTS National Aeronautics and Space Administration . 1. Fiscal Year 2009 Activities Year Fiscal • Exploration Systems Mission Directorate 1 • Space Operations Mission Directorate 10 • Science Mission Directorate 18 • Aeronautics Research Mission Directorate 25 Department of Defense . 41 Federal Aviation Administration . 45 . Department of Commerce . 51. Department of the Interior . 81. Federal Communications Commission . 103 U.S. Department of Agriculture. 107 National Science Foundation . 115 . Department of State. 125 Department of Energy. 129 Smithsonian Institution . 137. Appendices . 149 . • A-1 U S Government Spacecraft Record 150 • A-2 World Record of Space Launches Successful in Attaining Earth Orbit or Beyond 151 • B Successful Launches to Orbit on U S Vehicles 152 • C Human Spaceflights 155 • D-1A Space Activities of the U S Government—Historical Table of Budget Authority in Millions of Real-Year Dollars 156 • D-1B Space Activities of the U S Government—Historical Table of Budget Authority in Millions of Inflation-Adjusted FY 09 Dollars 157 • D-2 Federal Space Activities Budget 158 • D-3 Federal Aeronautics Activities Budget 159 Acronyms .
    [Show full text]
  • Prototype Design and Mission Analysis for a Small Satellite Exploiting Environmental Disturbances for Attitude Stabilization
    Calhoun: The NPS Institutional Archive Theses and Dissertations Thesis and Dissertation Collection 2016-03 Prototype design and mission analysis for a small satellite exploiting environmental disturbances for attitude stabilization Polat, Halis C. Monterey, California: Naval Postgraduate School http://hdl.handle.net/10945/48578 NAVAL POSTGRADUATE SCHOOL MONTEREY, CALIFORNIA THESIS PROTOTYPE DESIGN AND MISSION ANALYSIS FOR A SMALL SATELLITE EXPLOITING ENVIRONMENTAL DISTURBANCES FOR ATTITUDE STABILIZATION by Halis C. Polat March 2016 Thesis Advisor: Marcello Romano Co-Advisor: Stephen Tackett Approved for public release; distribution is unlimited THIS PAGE INTENTIONALLY LEFT BLANK REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704–0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to Washington headquarters Services, Directorate for Information Operations and Reports, 1215 Jefferson Davis Highway, Suite 1204, Arlington, VA 22202-4302, and to the Office of Management and Budget, Paperwork Reduction Project (0704-0188) Washington, DC 20503. 1. AGENCY USE ONLY 2. REPORT DATE 3. REPORT TYPE AND DATES COVERED (Leave blank) March 2016 Master’s thesis 4. TITLE AND SUBTITLE 5. FUNDING NUMBERS PROTOTYPE DESIGN AND MISSION ANALYSIS FOR A SMALL SATELLITE EXPLOITING ENVIRONMENTAL DISTURBANCES FOR ATTITUDE STABILIZATION 6. AUTHOR(S) Halis C. Polat 7. PERFORMING ORGANIZATION NAME(S) AND ADDRESS(ES) 8. PERFORMING Naval Postgraduate School ORGANIZATION REPORT Monterey, CA 93943-5000 NUMBER 9.
    [Show full text]
  • Space Security Index 2013
    SPACE SECURITY INDEX 2013 www.spacesecurity.org 10th Edition SPACE SECURITY INDEX 2013 SPACESECURITY.ORG iii Library and Archives Canada Cataloguing in Publications Data Space Security Index 2013 ISBN: 978-1-927802-05-2 FOR PDF version use this © 2013 SPACESECURITY.ORG ISBN: 978-1-927802-05-2 Edited by Cesar Jaramillo Design and layout by Creative Services, University of Waterloo, Waterloo, Ontario, Canada Cover image: Soyuz TMA-07M Spacecraft ISS034-E-010181 (21 Dec. 2012) As the International Space Station and Soyuz TMA-07M spacecraft were making their relative approaches on Dec. 21, one of the Expedition 34 crew members on the orbital outpost captured this photo of the Soyuz. Credit: NASA. Printed in Canada Printer: Pandora Print Shop, Kitchener, Ontario First published October 2013 Please direct enquiries to: Cesar Jaramillo Project Ploughshares 57 Erb Street West Waterloo, Ontario N2L 6C2 Canada Telephone: 519-888-6541, ext. 7708 Fax: 519-888-0018 Email: [email protected] Governance Group Julie Crôteau Foreign Aairs and International Trade Canada Peter Hays Eisenhower Center for Space and Defense Studies Ram Jakhu Institute of Air and Space Law, McGill University Ajey Lele Institute for Defence Studies and Analyses Paul Meyer The Simons Foundation John Siebert Project Ploughshares Ray Williamson Secure World Foundation Advisory Board Richard DalBello Intelsat General Corporation Theresa Hitchens United Nations Institute for Disarmament Research John Logsdon The George Washington University Lucy Stojak HEC Montréal Project Manager Cesar Jaramillo Project Ploughshares Table of Contents TABLE OF CONTENTS TABLE PAGE 1 Acronyms and Abbreviations PAGE 5 Introduction PAGE 9 Acknowledgements PAGE 10 Executive Summary PAGE 23 Theme 1: Condition of the space environment: This theme examines the security and sustainability of the space environment, with an emphasis on space debris; the potential threats posed by near-Earth objects; the allocation of scarce space resources; and the ability to detect, track, identify, and catalog objects in outer space.
    [Show full text]
  • <> CRONOLOGIA DE LOS SATÉLITES ARTIFICIALES DE LA
    1 SATELITES ARTIFICIALES. Capítulo 5º Subcap. 10 <> CRONOLOGIA DE LOS SATÉLITES ARTIFICIALES DE LA TIERRA. Esta es una relación cronológica de todos los lanzamientos de satélites artificiales de nuestro planeta, con independencia de su éxito o fracaso, tanto en el disparo como en órbita. Significa pues que muchos de ellos no han alcanzado el espacio y fueron destruidos. Se señala en primer lugar (a la izquierda) su nombre, seguido de la fecha del lanzamiento, el país al que pertenece el satélite (que puede ser otro distinto al que lo lanza) y el tipo de satélite; este último aspecto podría no corresponderse en exactitud dado que algunos son de finalidad múltiple. En los lanzamientos múltiples, cada satélite figura separado (salvo en los casos de fracaso, en que no llegan a separarse) pero naturalmente en la misma fecha y juntos. NO ESTÁN incluidos los llevados en vuelos tripulados, si bien se citan en el programa de satélites correspondiente y en el capítulo de “Cronología general de lanzamientos”. .SATÉLITE Fecha País Tipo SPUTNIK F1 15.05.1957 URSS Experimental o tecnológico SPUTNIK F2 21.08.1957 URSS Experimental o tecnológico SPUTNIK 01 04.10.1957 URSS Experimental o tecnológico SPUTNIK 02 03.11.1957 URSS Científico VANGUARD-1A 06.12.1957 USA Experimental o tecnológico EXPLORER 01 31.01.1958 USA Científico VANGUARD-1B 05.02.1958 USA Experimental o tecnológico EXPLORER 02 05.03.1958 USA Científico VANGUARD-1 17.03.1958 USA Experimental o tecnológico EXPLORER 03 26.03.1958 USA Científico SPUTNIK D1 27.04.1958 URSS Geodésico VANGUARD-2A
    [Show full text]
  • October 2016 ASTRO-H Spacecraft Fragments Inside
    National Aeronautics and Space Administration OrbitalQuarterly Debris News Volume 20, Issue 4 October 2016 ASTRO-H Spacecraft Fragments Inside... During Payload Check-out Operations New SOZ Breakup in July 2016 2 The ASTRO-H/Hitomi/New X-Ray Telescope actual rotation of the spacecraft. The ACS assessed the BeiDou G2 Spacecraft (NeXT) high energy astrophysics observatory satellite spacecraft to be in a critical situation and attempted to Fragments in GEO Orbit 2 experienced an operationally-induced fragmentation use the RCS to enter a Safe-Hold mode. Unfortunately, event on 26 March 2016 at approximately 1:42 GMT. incorrect thruster control parameters led to the thrusters WorldView 2 Spacecraft The spacecraft (International Designator 2016-012A, increasing the angular acceleration of the spacecraft. As Fragments in July 2016 3 U.S. Strategic Command [USSTRATCOM] Space rotational speed exceeded design parameters, several Indian RISAT-1 Spacecraft Surveillance Network [SSN] catalog number 41337), major components separated from the spacecraft, Experiences Possible managed and operated by the Japan Aerospace leading to mission loss. JAXA post mortem analyses Fragmentation 4 Exploration Agency (JAXA) but including payloads from NASA/Goddard Space continued on page 2 Disposal of GOES-3 4 Flight Center, the Canadian UNCOPUOS Reaches Space Agency, and the European Consensus on First Set of Space Agency, had concluded Guidelines for Long-term its Phase 0 Critical Operations Sustainability of OSA 5 Phase and was approximately 60% complete in its Initial Changes to ODPO Website 6 Function Check Phase. The ISS Debris Avoidance Process 7 spacecraft had been on-orbit slightly over one month and CubeSat PMD by Drag was in a 31.0° inclination, 578 Enhancement 8 by 536 km orbit at the time of Abstracts 10 the event.
    [Show full text]
  • Istnanosat-1 Quality Assurance, Risk Management and Assembly, Integration and Verification Planning
    ISTNanosat-1 Quality Assurance, Risk Management and Assembly, Integration and Verification Planning Pedro Filipe Rodrigues Coelho Thesis to obtain the Master of Science Degree in Aerospace Engineering Supervisor: Prof. Rui M. Rocha Co-Supervisor: Prof. Moisés S. Piedade Examination Committee Chairperson: Prof. João Miranda Lemos Supervisor: Prof. Rui M. Rocha Co-Supervisor: Prof. Moisés S. Piedade Members of the Committee: Prof. Agostinho A. da Fonseca May 2016 ii Acknowledgments To Professor Rui Rocha and Professor Moisés Piedade, I have to thank the opportunity to work in the ISTNanoSat-1 Project, the guidance throughout the project and the most required pushes for this project conclusion. I would like to thank Laurent Marchand and Nicolas Saillen for the support, drive and belief. It would never have been possible to complete this work without their support and flexibility as well as their drive in my professional endeavors. To all the friendships university brought and endured in my life, that shared the worst and best of university, the late nights of work and study, the challenging exchange of ideas and ideals and all the growing into adulthood. To all my friends in ESA/ESTEC, for filling the best possible work experience with the best personnel environment. Their joy and enthusiasm in work and life were and will always be an inspiration in my life. A lei, bella Annalisa coppia di ballo, per essere la musica e la giola in tutti i76955+ momenti… À minha família, Mãe, Pai e Irmã, pelo amor incondicional, paciência e crença sem limites. Não tenho como retribuir o esforço incansável, todo o carinho e a educação modelar, senão agarrar o futuro pelo qual tanto lutaram comigo.
    [Show full text]