Spacecraft Swarm Dynamics and Control About Asteroids
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CZ-Space Day Intro
16.7.2010 ESA TECHNOLOGY → PROGRAMMES AND STRATEGY Czech Space Technology Day - GSTP July 2010 CONTENTS • The European Space Agency -ESA • Space Technology • ESA’s Technology Programmes • Doing business with ESA • ESA’s Long Term Plan 2 1 16.7.2010 → THE EUROPEAN SPACE AGENCY PURPOSE OF ESA “To provide for and promote, for exclusively peaceful purposes, cooperation among European states in space research and technology and their space applications. ” - Article 2 of ESA Convention 4 2 16.7.2010 ESA FACTS AND FIGURES • Over 30 years of experience • 18 Member States • Five establishments, about 2000 staff • 3.7 billion Euro budget (2010) • Over 60 satellites designed, tested and operated in flight • 17 scientific satellites in operation • Five types of launcher developed • Over 190 launches 5 18 MEMBER STATES Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg, Norway, the Netherlands, Portugal, Spain, Sweden, Switzerland and the United Kingdom. Canada takes part in some programmes under a Cooperation Agreement. Hungary, Romania, Poland, Slovenia, and Estonia are European Cooperating States. Cyprus and Latvia have signed Cooperation Agreements with ESA. 6 3 16.7.2010 ACTIVITIES ESA is one of the few space agencies in the world to combine responsibility in nearly all areas of space activity. • Space science • Navigation • Human spaceflight • Telecommunications • Exploration • Technology • Earth observation • Operations • Launchers 7 ESA PROGRAMMES All Member States participate (on In addition, -
ACT-RPR-SPS-1110 Sps Europe Paper
62nd International Astronautical Congress, Cape Town, SA. Copyright ©2011 by the European Space Agency (ESA). Published by the IAF, with permission and released to the IAF to publish in all forms. IAC-11-C3.1.3 PROSPECTS FOR SPACE SOLAR POWER IN EUROPE Leopold Summerer European Space Agency, Advanced Concepts Team, The Netherlands, [email protected] Lionel Jacques European Space Agency, Advanced Concepts Team, The Netherlands, [email protected] In 2002, a phased, multi-year approach to space solar power has been published. Following this plan, several activities have matured the concept and technology further in the following years. Despite substantial advances in key technologies, space solar power remains still at the weak intersections between the space sector and the energy sector. In the 10 years since the development of the European SPS Programme Plan, both, the space and the energy sectors have undergone substantial changes and many key enabling technologies for space solar power have advanced significantly. The present paper attempts to take account of these changes in view to assess how they influence the prospect for space solar power work for Europe. Fresh Look Study as well as the work on a European I INTRODUCTION sail tower concept by Klimke and Seboldt [16], [17]. Based on these results, which re-confirmed the The concept of generating solar power in space and principal technical viability of space solar power transmitting it to Earth to contribute to terrestrial energy concepts, the focus of the first phase of the European systems has received period attention since P. Glaser SPS programme plan has been to enlarge the evaluation published the first engineering approach to it in 1968 scope of space solar power by including expertise from [1]. -
→ Space for Europe European Space Agency
number 153 | February 2013 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, Poland, 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 (to Dec 2012) → by elaborating and implementing a long-term European space policy, by recommending space objectives to the Member States, and by concerting the Director General: J.-J. Dordain 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. -
Cluster Keeping Algorithms for the Satellite Swarm Sensor Network Project
5th Federated and Fractionated Satellite Systems Workshop November 2-3, 2017, ISAE SUPAERO – Toulouse, France Cluster Keeping Algorithms for the Satellite Swarm Sensor Network Project Eviatar Edlerman and Pini Gurfil Technion – Israel Institute of Technology, Haifa 32000, Israel [email protected]; [email protected] Abstract This paper develops cluster control algorithms for the Satellite Swarm Sensor Network (S3Net) project, whose main aim is to enable fractionation of space-based remote sensing, imaging, and observation satellites. A methodological development of orbit control algorithms is provided, supporting the various use cases of the mission. Emphasis is given on outlining the algorithms structure, information flow, and software implementation. The methodology presented herein enables operation of multiple satellites in coordination, to enable fractionation of space sensors and augmentation of data provided therefrom. 1. INTRODUCTION In the field of earth observation from space, modern approaches show a trend of moving away from the classical single satellite missions, where one satellite includes a complete set of sensors and instruments, towards fractionated and distributed sensor missions, where multiple satellites, possibly carrying different types of sensors, act in a formation or swarm. Such missions promise an increase of imaging quality, an increase of service quality and, in many cases, a decrease of deployment costs for satellites that can become smaller and less complex due to mission requirements. Need for incremental deployment can be caused by funding limitations or issues. Although a combination of funds from different interest groups is possible, it can be difficult to achieve. A higher degree of independence for service providers can be enabled through lower cost satellites that allow integration into satellite swarms. -
→ 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. -
IFC-AMC Motion to Dismiss
Case 1:17-cv-01494-VAC-SRF Document 34-1 Filed 02/16/18 Page 1 of 1 PageID #: 1030 IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE JUANA DOE I et al., § § Plaintiffs, § § vs. § § C.A. No. 17-1494-VAC-SRF IFC ASSET MANAGEMENT COMPANY, § LLC, § § Defendant. § [PROPOSED] ORDER WHEREAS, Defendant IFC Asset Management Company, LLC, having moved to dismiss the claims in Plaintiff Juana Doe I et al.’s Complaint (D.I. 1); and, WHEREAS, the Court having considered the briefs and arguments in support of and in opposition to said Motion; IT IS HEREBY ORDERED this _______ day of ____________, 2018, that the Motion is GRANTED. Plaintiffs’ Complaint is dismissed with prejudice. _______________________________ United States District Judge RLF1 18887565v.1 Case 1:17-cv-01494-VAC-SRF Document 34-1 Filed 02/16/18 Page 1 of 1 PageID #: 1030 IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE JUANA DOE I et al., § § Plaintiffs, § § vs. § § C.A. No. 17-1494-VAC-SRF IFC ASSET MANAGEMENT COMPANY, § LLC, § § Defendant. § [PROPOSED] ORDER WHEREAS, Defendant IFC Asset Management Company, LLC, having moved to dismiss the claims in Plaintiff Juana Doe I et al.’s Complaint (D.I. 1); and, WHEREAS, the Court having considered the briefs and arguments in support of and in opposition to said Motion; IT IS HEREBY ORDERED this _______ day of ____________, 2018, that the Motion is GRANTED. Plaintiffs’ Complaint is dismissed with prejudice. _______________________________ United States District Judge RLF1 18887565v.1 Case 1:17-cv-01494-VAC-SRF Document 35 Filed 02/16/18 Page 1 of 51 PageID #: 1031 IN THE UNITED STATES DISTRICT COURT FOR THE DISTRICT OF DELAWARE JUANA DOE I et al., § § Plaintiffs, § § vs. -
ESA Heliophysics Missions
ESA Heliophysics missions C. Philippe Escoubet ESA/ESTEC With help from J. Benkhoff, B. Fleck, D. Mueller, M. Taylor, J. Zender ESA Heliophysics Missions • In operations • In Implementation - SOHO - Solar Orbiter - Hinode - Cluster - Proba 2 • In Technology - Proba 3 • Earth observation - Swarm • BepiColombo and Rosetta ESA Heliophysics Missions: current mission results • In operations - SOHO - Hinode - Cluster - Proba 2 • Earth observation - Swarm SOHO Overview 1. Joint ESA/NASA mission, studying the Sun and its effects on Earth 2. Launched on 2 Dec 1995 (18 years) 3. Spacecraft and Science operation centre at GSFC 4. 4754 papers in refereed literature 5. Extension up to end 2016 and preliminary extension to end 2018 (to be decided in fall) 6. ESA/NASA Memorandum Of Understanding (MOU) extended up to 31 Dec 2016. Comet Ison: faded glory SOHO image Evidence for a deeply penetrating meridional flow Radial Horizontal flow flow 1. Novel global helioseismic analysis method to MDI data to infer the meridional flow in the deep solar interior 2. Method based on perturbation of eigenfunctions of solar p modes due to meridional flow 3. Evidence of a very deep meridional flow down to the base of the convection zone 4. Meridional flow plays key role in determining strength of Sun’s polar magnetic field, which determines the strength of sunspot cycle 5. Knowledge of meridional flow therefore important for understanding of global solar dynamo Schad et al.: ApJ 778, L38 Comet ISON: Faded Glory Knight and Battams, ApJ, 2014: • ISON brightened continuously up to perihelion • Nucleon was destroyed before perihelion Hinode Overview • Hinode is a Japanese mission, with NASA (USA), STFC (UK), ESA and NSC (Norway) as international partners • ESA support (ground station and data centre) was one of contribution to ILWS • Mission objective: to understand generation, transport and dissipation of solar magnetic fields • Launched 22 September 2006 • 838 publications in refereed literature since launch 1. -
Asteroids Do Have Satellites 289
Merline et al.: Asteroids Do Have Satellites 289 Asteroids Do Have Satellites William J. Merline Southwest Research Institute Stuart J. Weidenschilling Planetary Science Institute Daniel D. Durda Southwest Research Institute Jean-Luc Margot California Institute of Technology Petr Pravec Astronomical Institute of the Academy of Sciences of the Czech Republic Alex D. Storrs Towson University After years of speculation, satellites of asteroids have now been shown definitively to exist. Asteroid satellites are important in at least two ways: (1) They are a natural laboratory in which to study collisions, a ubiquitous and critically important process in the formation and evolu- tion of the asteroids and in shaping much of the solar system, and (2) their presence allows to us to determine the density of the primary asteroid, something which otherwise (except for certain large asteroids that may have measurable gravitational influence on, e.g., Mars) would require a spacecraft flyby, orbital mission, or sample return. Binaries have now been detected in a variety of dynamical populations, including near-Earth, main-belt, outer main-belt, Tro- jan, and transneptunian regions. Detection of these new systems has been the result of improved observational techniques, including adaptive optics on large telescopes, radar, direct imaging, advanced lightcurve analysis, and spacecraft imaging. Systematics and differences among the observed systems give clues to the formation mechanisms. We describe several processes that may result in binary systems, all of which involve collisions of one type or another, either physi- cal or gravitational. Several mechanisms will likely be required to explain the observations. 1. INTRODUCTION sons between, for example, asteroid taxonomic types and our inventory of meteorites. -
Stable Orbits in the Small-Body Problem an Application to the Psyche Mission
Stable Orbits in the Small-Body Problem An Application to the Psyche Mission Stijn Mast Technische Universiteit Delft Stable Orbits in the Small-Body Problem Front cover: Artist illustration of the Psyche mission spacecraft orbiting asteroid (16) Psyche. Image courtesy NASA/JPL-Caltech. ii Stable Orbits in the Small-Body Problem An Application to the Psyche Mission by Stijn Mast to obtain the degree of Master of Science at Delft University of Technology, to be defended publicly on Friday August 31, 2018 at 10:00 AM. Student number: 4279425 Project duration: October 2, 2017 – August 31, 2018 Thesis committee: Ir. R. Noomen, TU Delft Dr. D.M. Stam, TU Delft Ir. J.A. Melkert, TU Delft Advisers: Ir. R. Noomen, TU Delft Dr. J.A. Sims, JPL Dr. S. Eggl, JPL Dr. G. Lantoine, JPL An electronic version of this thesis is available at http://repository.tudelft.nl/. Stable Orbits in the Small-Body Problem This page is intentionally left blank. iv Stable Orbits in the Small-Body Problem Preface Before you lies the thesis Stable Orbits in the Small-Body Problem: An Application to the Psyche Mission. This thesis has been written to obtain the degree of Master of Science in Aerospace Engineering at Delft University of Technology. Its contents are intended for anyone with an interest in the field of spacecraft trajectory dynamics and stability in the vicinity of small celestial bodies. The methods presented in this thesis have been applied extensively to the Psyche mission. Conse- quently, the work can be of interest to anyone involved in the Psyche mission. -
Operational Collision Avoidance at ESOC
Operational Collision Avoidance at ESOC Q. Funke, B. Bastida Virgili, V. Braun, T. Flohrer, H. Krag, S. Lemmens, F. Letizia, K. Merz, J. Siminski 9.11.2018 ESA UNCLASSIFIED - For Official Use Outline • Introduction • Collision avoidance at ESA • Avoidance manoeuvre reaction threshold • Current process • Drivers • Back-end database and tools • Front-end • Process control • Statistics • Summary ESA UNCLASSIFIED - For Official Use Q. Funke, B. Bastida Virgili, V. Braun, T. Flohrer, H. Krag, S. Lemmens, F. Letizia, K. Merz, J. Siminski| 9.11.2018 | Slide 2 Covered missions Sentinel-2A/B Sentinel-3A/B Sentinel-5P ] 3 Cryosat-2 Other missions: Sentinel-1A/B • ERS-2 RapidEye 1-5 • Envisat • Proba-1,2,V Saocom-1A • Cluster-II 2009: 2009: Spatial Density - Swarm B • XMM Swarm A,C • Galileo/Giove • METOP-A/-B/-C Aeolus of objects > 10cm > [1/km 10cm of objects • MSG-3/4 • Artemis ESA’s ESA’s MASTER At varying support level ESA UNCLASSIFIED - For Official Use Q. Funke, B. Bastida Virgili, V. Braun, T. Flohrer, H. Krag, S. Lemmens, F. Letizia, K. Merz, J. Siminski| 9.11.2018 | Slide 3 Avoidance manoeuvre reaction threshold • Requires a management decision • Trade ignored/accepted risk vs. risk reduction • Estimate cost i.e. manoeuvre frequency for selected reaction threshold • Depends on orbit uncertainties of the secondary (chasing) objects • ESA’s ARES tool, part of DRAMA SW suite, https://sdup.esoc.esa.int • Need consistent setup of operational and analysis approach (SC area) • Typical managerial target function: • avoid 90% of the accumulated collision probability • Typical result: Assessment of Risk • Threshold of 10-4 one day to TCA using encircling sphere Event Statistics https://sdup.esoc.esa.int • for 90% risk reduction at cost of 1-3 manoeuvres per year ESA UNCLASSIFIED - For Official Use Q. -
Radar Observations and a Physical Model of Asteroid 4660 Nereus, a Prime Space Mission Target ∗ Marina Brozovic A, ,Stevenj.Ostroa, Lance A.M
Icarus 201 (2009) 153–166 Contents lists available at ScienceDirect Icarus www.elsevier.com/locate/icarus Radar observations and a physical model of Asteroid 4660 Nereus, a prime space mission target ∗ Marina Brozovic a, ,StevenJ.Ostroa, Lance A.M. Benner a, Jon D. Giorgini a, Raymond F. Jurgens a,RandyRosea, Michael C. Nolan b,AliceA.Hineb, Christopher Magri c, Daniel J. Scheeres d, Jean-Luc Margot e a Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109-8099, USA b Arecibo Observatory, National Astronomy and Ionosphere Center, Box 995, Arecibo, PR 00613, USA c University of Maine at Farmington, Preble Hall, 173 High St., Farmington, ME 04938, USA d Aerospace Engineering Sciences, University of Colorado, Boulder, CO 80309-0429, USA e Department of Astronomy, Cornell University, 304 Space Sciences Bldg., Ithaca, NY 14853, USA article info abstract Article history: Near–Earth Asteroid 4660 Nereus has been identified as a potential spacecraft target since its 1982 Received 11 June 2008 discovery because of the low delta-V required for a spacecraft rendezvous. However, surprisingly little Revised 1 December 2008 is known about its physical characteristics. Here we report Arecibo (S-band, 2380-MHz, 13-cm) and Accepted 2 December 2008 Goldstone (X-band, 8560-MHz, 3.5-cm) radar observations of Nereus during its 2002 close approach. Available online 6 January 2009 Analysis of an extensive dataset of delay–Doppler images and continuous wave (CW) spectra yields a = ± = ± Keywords: model that resembles an ellipsoid with principal axis dimensions X 510 20 m, Y 330 20 m and +80 Radar observations Z = 241− m. -
SPP EXECUTIVE SUMMARY Consolidated Data for Small Planetary Platforms in NEO and MAB
CDF STUDY REPORT SPP EXECUTIVE SUMMARY Consolidated Data for Small Planetary Platforms in NEO and MAB CDF-178(C) January 2018 SPP Executive Summary CDF Study Report: CDF-178(C) January 2018 page 1 of 100 CDF Study Report SPP Executive Summary Consolidated Data for Small Planetary Platforms in NEO and MAB ESA UNCLASSIFIED – Releasable to the Public SPP Executive Summary CDF Study Report: CDF-178(C) January 2018 page 2 of 100 FRONT COVER Study Logo showing satellite approaching an asteroid with a swarm of nanosats ESA UNCLASSIFIED – Releasable to the Public SPP Executive Summary CDF Study Report: CDF-178(C) January 2018 page 3 of 100 STUDY TEAM This study was performed in the ESTEC Concurrent Design Facility (CDF) by the following interdisciplinary team: TEAM LEADER AOCS PAYLOAD COMMUNICATIONS POWER CONFIGURATION PROGRAMMATICS/ AIV COST ELECTRICAL PROPULSION DATA HANDLING CHEMICAL PROPULSION GS&OPS SYSTEMS MISSION ANALYSIS THERMAL MECHANISMS Under the responsibility of: S. Bayon, SCI-FMP, Study Manager With the scientific assistance of: Study Scientist With the technical support of: Systems/APIES Smallsats Radiation The editing and compilation of this report has been provided by: Technical Author ESA UNCLASSIFIED – Releasable to the Public SPP Executive Summary CDF Study Report: CDF-178(C) January 2018 page 4 of 100 This study is based on the ESA CDF Open Concurrent Design Tool (OCDT), which is a community software tool released under ESA licence. All rights reserved. Further information and/or additional copies of the report can be requested from: S. Bayon ESA/ESTEC/SCI-FMP Postbus 299 2200 AG Noordwijk The Netherlands Tel: +31-(0)71-5655502 Fax: +31-(0)71-5655985 [email protected] For further information on the Concurrent Design Facility please contact: M.