Space-Based Observations
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Analysis of Perturbations and Station-Keeping Requirements in Highly-Inclined Geosynchronous Orbits
ANALYSIS OF PERTURBATIONS AND STATION-KEEPING REQUIREMENTS IN HIGHLY-INCLINED GEOSYNCHRONOUS ORBITS Elena Fantino(1), Roberto Flores(2), Alessio Di Salvo(3), and Marilena Di Carlo(4) (1)Space Studies Institute of Catalonia (IEEC), Polytechnic University of Catalonia (UPC), E.T.S.E.I.A.T., Colom 11, 08222 Terrassa (Spain), [email protected] (2)International Center for Numerical Methods in Engineering (CIMNE), Polytechnic University of Catalonia (UPC), Building C1, Campus Norte, UPC, Gran Capitan,´ s/n, 08034 Barcelona (Spain) (3)NEXT Ingegneria dei Sistemi S.p.A., Space Innovation System Unit, Via A. Noale 345/b, 00155 Roma (Italy), [email protected] (4)Department of Mechanical and Aerospace Engineering, University of Strathclyde, 75 Montrose Street, Glasgow G1 1XJ (United Kingdom), [email protected] Abstract: There is a demand for communications services at high latitudes that is not well served by conventional geostationary satellites. Alternatives using low-altitude orbits require too large constellations. Other options are the Molniya and Tundra families (critically-inclined, eccentric orbits with the apogee at high latitudes). In this work we have considered derivatives of the Tundra type with different inclinations and eccentricities. By means of a high-precision model of the terrestrial gravity field and the most relevant environmental perturbations, we have studied the evolution of these orbits during a period of two years. The effects of the different perturbations on the constellation ground track (which is more important for coverage than the orbital elements themselves) have been identified. We show that, in order to maintain the ground track unchanged, the most important parameters are the orbital period and the argument of the perigee. -
6 Orbit Relative to the Sun. Crossing Times
6 Orbit Relative to the Sun. Crossing Times We begin by studying the position of the orbit and ground track of an arbi- trary satellite relative to the direction of the Sun. We then turn more specif- ically to Sun-synchronous satellites for which this relative position provides the very definition of their orbit. 6.1 Cycle with Respect to the Sun 6.1.1 Crossing Time At a given time, it is useful to know the local time on the ground track, i.e., the LMT, deduced in a straightforward manner from the UT once the longitude of the place is given, using (4.49). The local mean time (LMT) on the ground track at this given time is called the crossing time or local crossing time. To obtain the local apparent time (LAT), one must know the day of the year to specify the equation of time ET. In all matters involving the position of the Sun (elevation and azimuth) relative to a local frame, this is the time that should be used. The ground track of the satellite can be represented by giving the crossing time. We have chosen to represent the LMT using colour on Colour Plates IIb, IIIb and VII to XI. For Sun-synchronous satellites such as MetOp-1, it is clear that the cross- ing time (in the ascending or descending direction) depends only on the latitude. At a given place (except near the poles), one crossing occurs during the day, the other at night. For the HEO of the Ellipso Borealis satellite, the stability of the crossing time also shows up clearly. -
Astrodynamics
Politecnico di Torino SEEDS SpacE Exploration and Development Systems Astrodynamics II Edition 2006 - 07 - Ver. 2.0.1 Author: Guido Colasurdo Dipartimento di Energetica Teacher: Giulio Avanzini Dipartimento di Ingegneria Aeronautica e Spaziale e-mail: [email protected] Contents 1 Two–Body Orbital Mechanics 1 1.1 BirthofAstrodynamics: Kepler’sLaws. ......... 1 1.2 Newton’sLawsofMotion ............................ ... 2 1.3 Newton’s Law of Universal Gravitation . ......... 3 1.4 The n–BodyProblem ................................. 4 1.5 Equation of Motion in the Two-Body Problem . ....... 5 1.6 PotentialEnergy ................................. ... 6 1.7 ConstantsoftheMotion . .. .. .. .. .. .. .. .. .... 7 1.8 TrajectoryEquation .............................. .... 8 1.9 ConicSections ................................... 8 1.10 Relating Energy and Semi-major Axis . ........ 9 2 Two-Dimensional Analysis of Motion 11 2.1 ReferenceFrames................................. 11 2.2 Velocity and acceleration components . ......... 12 2.3 First-Order Scalar Equations of Motion . ......... 12 2.4 PerifocalReferenceFrame . ...... 13 2.5 FlightPathAngle ................................. 14 2.6 EllipticalOrbits................................ ..... 15 2.6.1 Geometry of an Elliptical Orbit . ..... 15 2.6.2 Period of an Elliptical Orbit . ..... 16 2.7 Time–of–Flight on the Elliptical Orbit . .......... 16 2.8 Extensiontohyperbolaandparabola. ........ 18 2.9 Circular and Escape Velocity, Hyperbolic Excess Speed . .............. 18 2.10 CosmicVelocities -
The Annual Compendium of Commercial Space Transportation: 2013
Federal Aviation Administration The Annual Compendium of Commercial Space Transportation: 2013 February 2014 About FAA \ NOTICE ###i# £\£\ ###ii# Table of Contents TABLE OF CONTENTS INTRODUCTION. 1 YEAR AT A GLANCE ..............................................2 COMMERCIAL SPACE TRANSPORTATION 2013 YEAR IN REVIEW ........5 7 ORBITAL LAUNCH VEHICLES .....................................21 3 SUBORBITAL REUSABLE VEHICLES ...............................47 33 ON-ORBIT VEHICLES AND PLATFORMS ............................57 LAUNCH SITES .................................................65 COMMERCIAL VENTURES BEYOND EARTH ORBIT ...................79 44 REGULATION AND POLICY .......................................83 3 5 3 53 3 8599: : : ;55: 9 < 5; < 2013 COMMERCIAL SPACE TRANSPORTATION FORECASTS ..........89 4 3 4 : ACRONYMS AND ABBREVIATIONS ...............................186 2013 WORLDWIDE ORBITAL LAUNCH EVENTS .....................192 DEFINITIONS ..................................................196 ###iii# £\£\ LIST OF FIGURES COMMERCIAL SPACE TRANSPORTATION YEAR IN REVIEW = =999 =99 = =3> =:9;> LAUNCH SITES = :< 2013 COMMERCIAL SPACE TRANSPORTATION FORECASTS =944 =4 =?4;9 =99493 =3 =:5= =< =;=9 =95;@3 =A =;=9 A 3 =994?: =9999 ? =54 =359 =:5 3 =<999= ? =99=5 ?3 =;>>99: =99 ? 3 ==9 ? 3: =3 =>3 =?: =3?: =:? : ###iv# LIST OF TABLES COMMERCIAL SPACE TRANSPORTATION YEAR IN REVIEW 99 : 3< :9=99< <99 ORBITAL LAUNCH VEHICLES 99 99 59595 593 SUBORBITAL REUSABLE VEHICLES 3 :5933 ON-ORBIT VEHICLES -
Rafael Space Propulsion
Rafael Space Propulsion CATALOGUE A B C D E F G Proprietary Notice This document includes data proprietary to Rafael Ltd. and shall not be duplicated, used, or disclosed, in whole or in part, for any purpose without written authorization from Rafael Ltd. Rafael Space Propulsion INTRODUCTION AND OVERVIEW PART A: HERITAGE PART B: SATELLITE PROPULSION SYSTEMS PART C: PROPELLANT TANKS PART D: PROPULSION THRUSTERS Satellites Launchers PART E: PROPULSION SYSTEM VALVES PART F: SPACE PRODUCTION CAPABILITIES PART G: QUALITY MANAGEMENT CATALOGUE – Version 2 | 2019 Heritage PART A Heritage 0 Heritage PART A Rafael Introduction and Overview Rafael Advanced Defense Systems Ltd. designs, develops, manufactures and supplies a wide range of high-tech systems for air, land, sea and space applications. Rafael was established as part of the Ministry of Defense more than 70 years ago and was incorporated in 2002. Currently, 7% of its sales are re-invested in R&D. Rafael’s know-how is embedded in almost every operational Israel Defense Forces (IDF) system; the company has a special relationship with the IDF. Rafael has formed partnerships with companies with leading aerospace and defense companies worldwide to develop applications based on its proprietary technologies. Offset activities and industrial co-operations have been set-up with more than 20 countries world-wide. Over the last decade, international business activities have been steadily expanding across the globe, with Rafael acting as either prime-contractor or subcontractor, capitalizing on its strengths at both system and sub-system levels. Rafael’s highly skilled and dedicated workforce tackles complex projects, from initial development phases, through prototype, production and acceptance tests. -
Religious Bearings in the Development of Mathematics
This dissertation has been 65—3869 microfilmed exactly as received HUMBERD, Jesse David, 1921- RELIGIOUS BEARINGS IN THE DEVELOPMENT OF MATHEMATICS. The Ohio State University, Ph.D., 1964 Education, history University Microfilms, Inc., Ann Arbor, Michigan Copyright by Jesse David Humberd 1965 RELIGIOUS BEARINGS IN THE DEVELOPMENT OP MATHEMATICS DISSERTATION Presented In Partial Fulfillment of the Requirements for the Degree Doctor of Philosophy in the Graduate School of the Ohio State University By Jesse David Humberd, B.S., B.A., M*A., B.D, - 5 ;- - i s - # - j t The Ohio State University 1964 Approved by A d v ise r Department of Education ACKNOWLEDGMENTS The author wishes to express his sincere thanks and appreciation to Dr, Harold P, Fawcett, teacher and adviser, for his inspiring personality in the classroom, and for his enthusiastic support in the preparation of this study. The author was first challenged by Dr, Fawcett in 1947, when in his first graduate course, Education 687, he was challenged to read more than twenty basic works in mathematics education. From that day to the present, he has known and valued greatly the ready enthusiasm and wise counsel of this master teacher. It is with deep gratitude that the author recognizes the cooperation and encouragement of his wife, Laura, during the preparation of this study. Much of the inconvenience resulting from moving the family several times, for graduate work; and most of the extra effort at home caused by periods of the w riter’s absence, has been borne by her. And to Lenora and Margaret, (or as they would have it, Lee and Meg), the author expresses thanks for their loyalty, during what must have seemed to be most of their lives. -
United States Patent (19) 11 Patent Number: 5,716,029 Spitzer Et Al
I US005716029A United States Patent (19) 11 Patent Number: 5,716,029 Spitzer et al. 45 Date of Patent: Feb. 10, 1998 54 CONSTANTSUN ANGLE TRANSFER ORBIT Meserole, J., "Launch Costs to GEO Using Solar Powered SEQUENCE AND METHOD USING Orbit Transfer Vehicles". American Institute of Aeronautics ELECTRIC PROPULSION and Astronautic (AIAA) Paper 93-2219. AIAAJSAE (75) Inventors: Arnon Spitzer, Los Angeles, Calif.; ASME/ASEE 29th Joint Propulsion Conference and Solomon A. De Picciotto, Aurora, Colo. Exhibit. Jun. 28-30, 1993. 73 Assignee: Hughes Electronics, Los Angeles, Free, B. "High Altitude Orbit Raising With On-Board Calif. Electric Power", International Electric Propulsion Confer ence Paper 93-205, American Institute Of Aeronautics and (21) Appl. No.: 558,572 Astronautics AIAA/AIDAVDGLA/JSASS 23rd International 22 Filed: Oct. 31, 1995 Electric Propulsion Conference. Sep. 13–16, 1993. Related U.S. Application Data Primary Examiner-Galen L. Barefoot 63 Continuation-in-part of Ser. No. 217,791, Mar. 25, 1994, Attorney, Agent, or Firm-Elizabeth E. Leitereg; Terje Pat No. 5,595,360. Gudmestad; Wanda K. Denson-Low (51) Int. Cl. ... ... B64G 1/10 52 U.S.C. ................................................... 244/158 R 57 ABSTRACT 58) Field of Search ................................ 244/158 R, 164, 244/168, 169, 172 An apparatus and method for translating a spacecraft (102. 108) from an injection orbit (114) about a central body (100) 56) References Cited to synchronous orbit (122) in a time efficient manner. The U.S. PATENT DOCUMENTS spacecraft (102, 108) includes propulsion thrusters (50) 4,943,014 7/1990 Harwood et al. ....................... 244/169 which are fired in predetermined timing sequences con trolled by a controller (64) in relation to the apogee (118) FOREIGN PATENT DOCUMENTS and perigee (120) of the injection orbit (114) and successive 0 047 211 3/1982 European Pat. -
Orbital Debris Program Office Figure 1
National Aeronautics and Space Administration Orbital Debris Quarterly News Volume 13, Issue 1 January 2009 Inside... New Debris Seen from Decommissioned Fengyun-1C Debris: Two Years Later 2 Satellite with Nuclear Power Source The ESA’s ATV-1 Reentry Event 3 A 21-year-old satellite containing a dormant According to Russian reports, the nuclear reactors nuclear reactor was the source of an unexpected on Cosmos 1818 and Cosmos 1867 functioned for Two New Microsatellite debris cloud in early July 2008. Launched by the approximately 5 and 11 months, respectively. For Impact Tests 4 former Soviet Union in February 1987, Cosmos the next two decades, the two inactive spacecraft 1818 (International Designator 1987-011A, circled the Earth without significant incident. Review of Different U.S. Satellite Number 17369) was the first of two Following the fragmentation event on or about Solar Cycle 24 vehicles designed to test a new, more advanced 4 July 2008, the U.S. Space Surveillance Network Predictions 7 nuclear power supply in low Earth orbit. Dozens was able to produce orbital data on 30 small debris of small particles were released during the still- (Figure 2). The majority of these debris were ejected Don Kessler Wins unexplained debris generation event. in a posigrade direction with velocities of less Space Safety Pioneer Cosmos 1818 and its sister spacecraft, than 15 meters per second, suggesting a relatively Award 8 Cosmos 1867 (Figure 1), carried a thermionic low energy event. From radar detections, a larger nuclear power supply, in contrast to the simpler, number of very small debris appear to have also Abstracts from the thermoelectric nuclear device which provided been released, but routine tracking of these debris NASA OD Program energy to the well-known RORSATs (Radar Ocean has proven difficult. -
Indian Payload Capabilities for Space Missions
INDIAN PAYLOAD CAPABILITIES FOR 13, Bangalore - SPACE MISSIONS July 11 A.S. Kiran Kumar Director Space Applications Centre International ASTROD Symposium, Ahmedabad th 5 Application-specific EO payloads IMS-1(2008) RISAT-1 (2012) MX/ HySI-T C-band SAR CARTOSAT-2/2A/2B RESOURCESAT-2 (2011) (2007/2009/2010) LISS 3/ LISS 4/AWiFS PAN RESOURCESAT-1 (2003) LISS 3/ LISS 4 AWiFS CARTOSAT-1 (2005) (Operational) STEREOPAN Megha-Tropiques (2011) TES(2001) MADRAS/SAPHIR/ScARaB/ Step& Stare ROSA PAN OCEANSAT-2 (2009) OCM/ SCAT/ROSA YOUTHSAT(2011) LiV HySI/RaBIT INSAT-3A (2003) KALPANA-1 (2002) VHRR, CCD VHRR Application-specific EO payloads GISAT MXVNIR/SWIR/TIR/HySI RISAT-3 RESOURCESAT-3A/3B/3C L-band SAR CARTOSAT-3 RESOURCESAT-2A LISS 3/LISS 4/AWiFS PAN LISS3/LISS4/AWiFS RESOURCESAT-3 LISS 3/LISS 4/ CARTOSAT-2C/2D AWiFS (Planned) PAN RISAT-1R C-band SAR SARAL Altimeter/ARGOS OCEANSAT-3 OCM , TIR GISAT MXVNIR/SWIR/ INSAT- 3D TIR/HySI Imager/Sounder EARTH OBSERVATION (LAND AND WATER) RESOURCESAT-1 IMS-1 RESOURCESAT-2 RISAT-1 RESOURCESAT-2A RESOURCESAT-3 RESOURCESAT-3A/3B/3C RISAT-3 GISAT RISAT-1R EARTH OBSERVATION (CARTOGRAPHY) TES CARTOSAT-1 CARTOSAT-2/2A/2B RISAT-1 CARTOSAT-2C/2D CARTOSAT-3 RISAT-3 RISAT-1R EARTH OBSERVATION (ATMOSPHERE & OCEAN) KALPANA-1 INSAT- 3A OCEANSAT-1 INSAT-3D OCEANSAT-2 YOUTHSAT GISAT MEGHA–TROPIQUES OCEANSAT-3 SARAL Current observation capabilities : Optical Payload Sensors in Spatial Res. Swath/ Radiometry Spectral bands Repetivity/ operation Coverage (km) revisit CCD 1 1 Km India & 10 bits 3 (B3, B4, B5) 4 times/ day surround. -
Satellite Systems
Chapter 18 REST-OF-WORLD (ROW) SATELLITE SYSTEMS For the longest time, space exploration was an exclusive club comprised of only two members, the United States and the Former Soviet Union. That has now changed due to a number of factors, among the more dominant being economics, advanced and improved technologies and national imperatives. Today, the number of nations with space programs has risen to over 40 and will continue to grow as the costs of spacelift and technology continue to decrease. RUSSIAN SATELLITE SYSTEMS The satellite section of the Russian In the post-Soviet era, Russia contin- space program continues to be predomi- ues its efforts to improve both its military nantly government in character, with and commercial space capabilities. most satellites dedicated either to civil/ These enhancements encompass both military applications (such as communi- orbital assets and ground-based space cations and meteorology) or exclusive support facilities. Russia has done some military missions (such as reconnaissance restructuring of its operating principles and targeting). A large portion of the regarding space. While these efforts have Russian space program is kept running by attempted not to detract from space-based launch services, boosters and launch support to military missions, economic sites, paid for by foreign commercial issues and costs have lead to a lowering companies. of Russian space-based capabilities in The most obvious change in Russian both orbital assets and ground station space activity in recent years has been the capabilities. decrease in space launches and corre- The influence of Glasnost on Russia's sponding payloads. Many of these space programs has been significant, but launches are for foreign payloads, not public announcements regarding space Russian. -
Drafting Committee for the 'Asia‐Pacific
Drafting Committee for the ‘Asia‐Pacific Plan of Action for Space Applications for Sustainable Development (2018‐2030) Dr Rajeev Jaiswal EOS Programme Office Indian Space Research Organisation (ISRO) India Bangkok, Thailand 31 May ‐ 1 June 2018 India’s Current Space Assets Communication Satellites • 15 Operational (INSAT- 4A, 4B, 4CR and GSAT- 6, 7, 8, 9 (SAS), 10, 12, 14, 15, 16, 17, 18 & 19) • >300 Transponders in C, Ext C & Ku bands Remote sensing Satellites • Three in Geostationary orbit (Kalpana-1, INSAT 3D & 3DR) • 14 in Sun-synchronous orbit (RESOURCESAT- 2 & 2A; CARTOSAT-1/ 2 Series (5); RISAT-2; OCEANSAT 2; MEGHA-TROPIQUES; SARAL, SCATSAT-1) Navigation Satellites : 7 (IRNSS 1A - IG) & GAGAN Payloads in GSAT 8, 10 & 15 Space Science: MOM & ASTROSAT 1 Space Applications Mechanism in India Promoting Space Technology Applications & Tools For Governance and Development NATIONAL MEET “There should not be any space between common man and space technology” . 160 Projects across 58 Ministries . Web & Mobile Applications : 200+ . MoUs with stakeholders : 120+ . Capacity Building : 10,000+ . Space Technology Cells : 21 17 STATE MEETS Haryana, Bihar, Uttarakhand, Mizoram, Nagaland, Rajasthan, Punjab, Jharkhand, Meghalaya, Himachal 20 58 Pradesh, Kerala, Chhattisgarh, Assam, Madhya Ministries Ministries Pradesh, Tamil Nadu, Mizoram & Uttar Pradesh Space Applications Verticals SOCIO ECONOMIC SECURITY SUSTAINABLE DEVELOPMENT Food Impact Assessment Water Bio- Resources Conservation Energy Fragile & Coastal Ecosystem Health Climate Change Induced -
The Space-Based Global Observing System in 2010 (GOS-2010)
WMO Space Programme SP-7 The Space-based Global Observing For more information, please contact: System in 2010 (GOS-2010) World Meteorological Organization 7 bis, avenue de la Paix – P.O. Box 2300 – CH 1211 Geneva 2 – Switzerland www.wmo.int WMO Space Programme Office Tel.: +41 (0) 22 730 85 19 – Fax: +41 (0) 22 730 84 74 E-mail: [email protected] Website: www.wmo.int/pages/prog/sat/ WMO-TD No. 1513 WMO Space Programme SP-7 The Space-based Global Observing System in 2010 (GOS-2010) WMO/TD-No. 1513 2010 © World Meteorological Organization, 2010 The right of publication in print, electronic and any other form and in any language is reserved by WMO. Short extracts from WMO publications may be reproduced without authorization, provided that the complete source is clearly indicated. Editorial correspondence and requests to publish, reproduce or translate these publication in part or in whole should be addressed to: Chairperson, Publications Board World Meteorological Organization (WMO) 7 bis, avenue de la Paix Tel.: +41 (0)22 730 84 03 P.O. Box No. 2300 Fax: +41 (0)22 730 80 40 CH-1211 Geneva 2, Switzerland E-mail: [email protected] FOREWORD The launching of the world's first artificial satellite on 4 October 1957 ushered a new era of unprecedented scientific and technological achievements. And it was indeed a fortunate coincidence that the ninth session of the WMO Executive Committee – known today as the WMO Executive Council (EC) – was in progress precisely at this moment, for the EC members were very quick to realize that satellite technology held the promise to expand the volume of meteorological data and to fill the notable gaps where land-based observations were not readily available.