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Thales Alenia Space Experience on Plasma Propulsion
Thales Alenia Space Experience on Plasma Propulsion IEPC-2007-301 Presented at the 30th International Electric Propulsion Conference, Florence, Italy September 17-20, 2007 Michel LYSZYK* and Laurent LECARDONNEL.† Thales Alenia Space, Cannes, 06150, France Abstract: Thales Alenia Space experience on plasma propulsion has been developed in the frame of Stentor, Astra 1K and GEI programs with plasma propulsion systems using SPT100 thrusters manufactured by Fakel and commercialized by Snecma . The PPS (plasma propulsion system) use in house equipments such as Power Processing Unit (PPU) manufactured by TAS-ETCA in Charleroi and the Thruster Orientation Mechanism (TOM) manufactured by TAS-France in Cannes . The PPS subsystem is used on board our SpaceBus satellite family to perform North-South station keeping. The on going activity on the XPS (Xenon Propulsion System) is devoted to the next European platform Alphabus currently under joint development by Thales Alenia Space and Astrium with CNES and ESA support. The XPS uses also the PPU manufactured by TAS-ETCA , the TOM manufactured by TAS-France and the Xe tank developed by TAS-Italy ; it use also the PPS1350 thruster under qualification by Snecma , a xenon regulator and a latch valve under development at Marotta Ireland. I. Introduction HIS document describes the Thales Alenia Space experience gained through Stentor , Astra 1K , GEI, T Spacebus and Alphabus programs on plasma Hall effect thrusters propulsion subsystems . For Spacebus application a description of the subsystem is given together with the general achieved performances . For Alphabus application a general status of the on going activities is given . * Head of electric propulsion section, Propulsion Department, [email protected]. -
SES Beam Magazine
BEAM MAGAZINE No. 01 | 2012 SATELLITES AND THE MEDIA The opportunities arising from ever-changing consumer demands TAKING THE LEAD Benefi tting from the varying markets of Europe EMERGING AUDIENCES The informed and increasingly a uent viewers of Asia TRANSMITTING MEDIA INNOVATION Keeping pace with the explosion in consumer devices EDITORIAL | BEAM NO. 01 STRENGTHENING PARTNERSHIPS DEAR READER, Partnering with our customers in order to support their de ve l- We are pushing for exciting, innovative satellite services and opment and growth plans: this is the core concept that drives our applications. Earlier this year, we unveiled SAT>IP: this ground- commitment to customer service. breaking technology allows satellite signals to be distributed in SES operates one of the world’s finest telecommunications the IP protocol to tablet computers, PCs and other smart devices. satellite fleets. With 51 satellites and a coverage area of 99% of the SAT>IP allows for mobile satellite reception on multiple screens world’s population, SES provides a major link in the global com- in the home. It represents a true breakthrough. And we are munications chain. moving closer to the launch of the O3b Networks constellation, This fleet, now featuring more than 1,400 transponders, is the which SES supports as a major strategic shareholder. This innova- world’s leading media broadcasting platform via satellite. Today, tive new medium earth orbit satellite system will provide highly we transmit more than 5,800 TV and radio channels – more than competitive high throughput broadband capacity for trunking, any other satellite system. Our spacecraft carry more than mobile backhaul and satellite applications in the maritime as 1,300 HDTV channels and our attractive satellite neighbour- well as the oil and gas sectors. -
Telecommunikation Satellites: the Actual Situation and Potential Future Developments
Telecommunikation Satellites: The Actual Situation and Potential Future Developments Dr. Manfred Wittig Head of Multimedia Systems Section D-APP/TSM ESTEC NL 2200 AG Noordwijk [email protected] March 2003 Commercial Satellite Contracts 25 20 15 Europe US 10 5 0 1995 1996 1997 1998 1999 2000 2001 2002 2003 European Average 5 Satellites/Year US Average 18 Satellites/Year Estimation of cumulative value chain for the Global commercial market 1998-2007 in BEuro 35 27 100% 135 90% 80% 225 Spacecraft Manufacturing 70% Launch 60% Operations Ground Segment 50% Services 40% 365 30% 20% 10% 0% 1 Consolidated Turnover of European Industry Commercial Telecom Satellite Orders 2000 30 2001 25 2002 3 (7) Firm Commercial Telecom Satellite Orders in 2002 Manufacturer Customer Satellite Astrium Hispasat SA Amazonas (Spain) Boeing Thuraya Satellite Thuraya 3 Telecommunications Co (U.A.E.) Orbital Science PT Telekommunikasi Telkom-2 Indonesia Hangar Queens or White Tails Orders in 2002 for Bargain Prices of already contracted Satellites Manufacturer Customer Satellite Alcatel Space New Indian Operator Agrani (India) Alcatel Space Eutelsat W5 (France) (1998 completed) Astrium Hellas-Sat Hellas Sat Consortium Ltd. (Greece-Cyprus) Commercial Telecom Satellite Orders in 2003 Manufacturer Customer Satellite Astrium Telesat Anik F1R 4.2.2003 (Canada) Planned Commercial Telecom Satellite Orders in 2003 SES GLOBAL Three RFQ’s: SES Americom ASTRA 1L ASTRA 1K cancelled four orders with Alcatel Space in 2001 INTELSAT Launched five satellites in the last 13 month average fleet age: 11 Years of remaining life PanAmSat No orders expected Concentration on cash flow generation Eutelsat HB 7A HB 8 expected at the end of 2003 Telesat Ordered Anik F1R from Astrium Planned Commercial Telecom Satellite Orders in 2003 Arabsat & are expected to replace Spacebus 300 Shin Satellite (solar-array steering problems) Korea Telecom Negotiation with Alcatel Space for Koreasat Binariang Sat. -
Trade Studies Towards an Australian Indigenous Space Launch System
TRADE STUDIES TOWARDS AN AUSTRALIAN INDIGENOUS SPACE LAUNCH SYSTEM A thesis submitted for the degree of Master of Engineering by Gordon P. Briggs B.Sc. (Hons), M.Sc. (Astron) School of Engineering and Information Technology, University College, University of New South Wales, Australian Defence Force Academy January 2010 Abstract During the project Apollo moon landings of the mid 1970s the United States of America was the pre-eminent space faring nation followed closely by only the USSR. Since that time many other nations have realised the potential of spaceflight not only for immediate financial gain in areas such as communications and earth observation but also in the strategic areas of scientific discovery, industrial development and national prestige. Australia on the other hand has resolutely refused to participate by instituting its own space program. Successive Australian governments have preferred to obtain any required space hardware or services by purchasing off-the-shelf from foreign suppliers. This policy or attitude is a matter of frustration to those sections of the Australian technical community who believe that the nation should be participating in space technology. In particular the provision of an indigenous launch vehicle that would guarantee the nation independent access to the space frontier. It would therefore appear that any launch vehicle development in Australia will be left to non- government organisations to at least define the requirements for such a vehicle and to initiate development of long-lead items for such a project. It is therefore the aim of this thesis to attempt to define some of the requirements for a nascent Australian indigenous launch vehicle system. -
Power Processing Unit Activities at Thales Alenia Space Belgium (ETCA)
Power Processing Unit Activities at Thales Alenia Space Belgium (ETCA) IEPC-2013-213 Presented at the 33rd International Electric Propulsion Conference, The George Washington University • Washington, D.C. • USA October 6 – 10, 2013 Eric Bourguignon1, Stéphane Fraselle2 and Thierry Scalais3 Thales Alenia Space Belgium (ETCA), B-6032 Charleroi, Belgium Abstract: Since 1996, Thales Alenia Space Belgium (ETCA) designs, develops and produces Power Processing Unit (PPU) to supply Hall Effect Thrusters: SPT-100 from Fakel and PPS1350-G from Snecma. The first qualification model, developed for the 50V bus Stentor program, has supplied during 8900 hours an SPT-100 thruster in a vacuum chamber simulating space environment. Qualified for the SpaceBus 4000 platform, with a 100V regulated bus, the SB4000 PPU and Filter Unit EQM have cumulated 6300 hours ground operation with a PPS1350-G thruster. Twenty three PPU flight models were delivered for the Stentor, Astra-1K, Smart-1, Intelsat, Inmarsat, Eutelsat, Yahsat satellites. In October 2005, the Smart-1 spacecraft reached the Moon after 4958 hours of cumulated operation of the PPU and its PPS1350-G thruster. Fourteen PPU’s currently in flight for North South Station Keeping on seven telecom satellites have cumulated more than 20900 hours flight operation. Following the selection of the PPS1350-G as baseline thruster for the AlphaBus platform, the AlphaBus PPU was developed and two flight models were delivered for AlphaSat, launched in July 2013. The flight validation of the AlphaBus electrical propulsion has been performed successfully in August 2013. On the SmallGEO platform, one EPTA branch has to drive one out of four SPT-100 thrusters. -
EUTELSAT S.A. € 500,000,000 1.125 PER CENT BONDS DUE 23 June 2021 ISSUE PRICE: 99.894 PER CENT
EUTELSAT S.A. € 500,000,000 1.125 PER CENT BONDS DUE 23 June 2021 ISSUE PRICE: 99.894 PER CENT The €500,000,000 aggregate principal amount 1.125 per cent. bonds due 23 June 2021 (the Bonds, and each a Bond) of Eutelsat S.A. (the Issuer) will be issued outside the Republic of France on 23 June 2016 (the Bond Issue). Each Bond will bear interest on its principal amount at a fixed rate of 1.125 per c ent. per annum from (and including) 23 June 2016 (the Issue Date) to (but excluding) 23 June 2021, payable in Euro annually in arrears on 23 June of each year and commencing on 23 June 2017, as further described in "Terms and Conditions of the Bonds – Interest". Unless previously redeemed or purchased and cancelled in accordance with their terms and conditions, the Bonds will be redeemed at their principal amount on 23 June 2021 (the Maturity Date). The Issuer may, at its option, and in certain circumstances shall, redeem all (but not part) of the Bonds at par plus any accrued and unpaid interest upon the occurrence of certain tax changes as further described in "Terms and Conditions of the Bonds – Redemption and Purchase – Redemption for tax reasons". The Bonds may also be redeemed (i) at the option of the Issuer, in whole or in part, at any time, prior to the Maturity Date, as further described in "Terms and Conditions of the Bonds — Redemption and Purchase — Make Whole Redemption by the Issuer", (ii) at any time prior to the Maturity Date, in whole (but not in part), at par plus accrued interest, if 80 per cent. -
VETRII IAS STUDY CIRCLE TNPSC Current Affairs SEPTEMBER - 2020
VETRII IAS STUDY CIRCLE TNPSC CURRENT AFFAIRS SEPTEMBER - 2020 An ISO 9001 : 2015 Institution | Providing Excellence Since 2011 Head Office Old No.52, New No.1, 9th Street, F Block, 1st Avenue Main Road, (Near Istha siddhi Vinayakar Temple), Anna Nagar East – 600102. Phone: 044-2626 5326 | 98844 72636 | 98844 21666 | 98844 32666 Branches SALEM KOVAI No.189/1, Meyanoor Road, Near ARRS Multiplex, (Near Salem New No.347, D.S.Complex (3rd floor), Nehru Street,Near Gandhipuram bus Stand), Opp. Venkateshwara Complex, Salem - 636004. Central Bus Stand, Ramnagar, Kovai - 9 0427-2330307 | 95001 22022 75021 65390 Educarreerr Location Vivekanandha Educational Institutions for Women, Elayampalayam, Tiruchengode - TK Namakkal District - 637 205. 04288 - 234670 | 91 94437 34670 Patrician College of Arts and Science, 3, Canal Bank Rd, Gandhi Nagar, Opposite to Kotturpuram Railway Station, Adyar, Chennai - 600020. 044 - 24401362 | 044 - 24426913 Sree Saraswathi Thyagaraja College Palani Road, Thippampatti, Pollachi - 642 107 73737 66550 | 94432 66008 | 90951 66009 www.vetriias.com My Dear Aspirants, Greetings to all of you! “What we think we become” Gautama Buddha. We all have dreams. To make dreams come into reality it takes a lot of determination, dedication, self discipline and continuous effort. We at VETRII IAS Study Circle are committed to provide the right guidance, quality coaching and help every aspirants to achieve his or her life’s cherished goal of becoming a civil servant. The class room coaching at VETRII IAS Study Circle is meticulously planned to equip the aspirants with all the relevant facts and fundamentals of the subjects. Further the VETRII IAS Study Circle Study materials aim to support the candidate by providing the most relevant study material in a comprehensive manner. -
NIDS China Security Report 2021 China’S Military Strategy in the New Era
ISBN: 978-4-86482-088-2 NIDS CHINA SECURITY REPORT NIDS China Security Report 2021 China’s Military Strategy in the New Era National Institute for Defense Studies, Japan National Institute for Defense Studies, Japan NIDS China Security Report 2021 China’s Military Strategy in the New Era Published by The National Institute for Defense Studies 5-1 Honmura-cho, Ichigaya, Shinjuku-ku, Tokyo 162-8808 Japan Website: http://www.nids.mod.go.jp Translated by INTERBOOKS Copyright © 2020 by the National Institute for Defense Studies, Japan All rights reserved. No part of this publication may be reproduced in any form without written, prior permission from the publisher. The China Security Report 2021 comprises NIDS researchers’ analyses and descriptions based on information compiled from open sources in Japan and overseas. The statements contained herein do not necessarily represent the official position of the Government of Japan or the Ministry of Defense. This publication is a translation of the Japanese version originally published in November 2020. ISBN978-4-86482-088-2 Printed in Japan NIDS China Security Report 2021 Contents Preface iii Summary v Acronyms and Abbreviations viii Introduction 2 Chapter 1: China’s Preparations for Informatized Warfare 1. Changes in China’s Military Strategy 6 (1) The Era of Mao Zedong (1927–1976): The Curse of the Final War and Active Defense 6 (2) The Era of Deng Xiaoping (1976–1989): A Break from the Final War and a Shift to Local War 7 (3) The Era of Jiang Zemin (1989–2004): Local Wars under High-Tech Conditions 9 (4) The Era of Hu Jintao (2004–2012): Informatized Local Wars 10 2. -
The Annual Compendium of Commercial Space Transportation: 2017
Federal Aviation Administration The Annual Compendium of Commercial Space Transportation: 2017 January 2017 Annual Compendium of Commercial Space Transportation: 2017 i Contents 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 (2017) Publication produced for FAA AST by The Tauri Group under contract. 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. ii Annual Compendium of Commercial Space Transportation: 2017 GENERAL CONTENTS Executive Summary 1 Introduction 5 Launch Vehicles 9 Launch and Reentry Sites 21 Payloads 35 2016 Launch Events 39 2017 Annual Commercial Space Transportation Forecast 45 Space Transportation Law and Policy 83 Appendices 89 Orbital Launch Vehicle Fact Sheets 100 iii Contents DETAILED CONTENTS EXECUTIVE SUMMARY . -
Rocket on Pad, China Ready to Send 1St Crew to Space Station 10 June 2021
Rocket on pad, China ready to send 1st crew to space station 10 June 2021 The Long March-2F Y12 rocket carrying the Shenzhou-12 spaceship was transferred to the launch pad at the Jiuquan Satellite Launch Center in northwest China on Wednesday, the China Manned Space Engineering Office said in a brief statement. Its tentative launch date is next Wednesday. The space agency plans a total of 11 launches through the end of next year to deliver two laboratory modules to expand the 70-ton station, along with supplies and crew members. Next week's launch will be the third of those, and the first of the four crewed missions planned. In this photo released by Xinhua News Agency, the Another cargo mission is planned for September, Shenzhou-12 manned spaceship with its Long March-2F shortly after which a replacement crew will be sent carrier rocket is being transferred to the launching area up, according to reports. The station's other two of Jiuquan Satellite Launch Center in northwestern modules are expected to be launched next year. China's Gansu province, on Wednesday, June 9, 2021. A three-man crew of astronauts will blast off in June for a three-month mission on China's new space station, according to a space official who was the country's first astronaut in orbit in May. Credit: Wang Jiangbo/Xinhua via AP The rocket that will send the first crew members to live on China's new orbiting space station has been moved onto the launch pad ahead of its planned blastoff next week. -
20030106126.Pdf
INSPACE PROPULSION--WHERE WE STAND AND WHAT'S NEXT Robert L. Sackheim Assistant Director and Chief Engineer for Propulsion NASA Marshall Space Flight Center, Marshall Space Flight Center, Alabama USA GBSTRGCT launch vehicles, many spacecraft suppliers, such as Baeing (formerly Hughes), Loral, and Northrop- The focus of this paper will be on the three stages Grumman (formerly TRW), have developed integral of in-space transportation propulsion systems, now propulsion systems (IPSs) on board their spacecraft commonly referred to as in-space propulsion (ISP); to perform many of the more conventional orbit i.e., the transfer of payloads from low-Earth orbits transfer functions. Some examples include the into higher orbits or into trajectories for planetary Hughes 601 and 702 commercial series of satellite encounters, including planetary landers and sample buses and the Northrop-Grumman IPS for the return launchers, if required. Functions required recent Chandra final orbit insertion functions. There at the operational location where ISP must provide have only been three complete upper stages devel- thrust for orbit include maintenance, position oped over the last 30 years: (1) The basic Centaur control, stationkeeping, and spacecraft altitude con- and all the associated upgrades, (2) the advanced trol; i.e., proper pointing and dynamic stability in Centaurs for the Delta 3 and 4 and the Atlas 3 and 5, inertial space; and the third function set to enable and (3) the inertial upper stage which is the only operations at various planetary locations, such upper stage that is currently certified for launch as atmospheric entry and capture, descent to the in a shuttle. -
Proton Mission Planner's Guide (PMPG)
Proton Launch System Mission Planner’s Guide APPENDIX A Proton Launch System Description and History Proton Launch System Mission Planner’s Guide, LKEB-9812-1990 Revision 7, July 2009 A. PROTON LAUNCH SYSTEM DESCRIPTION AND HISTORY A.1 GENERAL DESCRIPTION OF THE PROTON FAMILY The Proton is currently available to commercial Customers as the four-stage Proton M/Breeze M configuration. Multiple payload fairing designs are presently qualified for flight. The lower three stages of the Proton are produced by the KhSC plant in Moscow. KhSC also produces the Breeze M Upper Stage, the carbon composite PayLoad Adapter (PLA) structures and the PayLoad Fairings (PLFs). Production capacity for the commercial Proton is approximately eight vehicles per year. The overall heights of the vehicle is approximately 60 m (197 ft), while the diameter of the second and third stages, and of the first stage core tank, is 4.1 m (13.5 ft). Maximum diameter of the first stage, including the outboard fuel tanks, is 7.4 m (24.3 ft). The Breeze M has a diameter of 4.0 m (13.1 ft). Total mass of the Proton at launch is approximately 705,000 kg (1,554,200 lbm). The general characteristics of the Proton M Breeze M are shown in Table A.1-1. Table A.1-1: Proton M/Breeze M General Characteristics Parameter Value LV Lift-off Mass (Metric Tons, MT) 705 Payload Mass for 3-stage LV without Upper Stage (MT) 23.0 Hcirc. = 180 km, i = 51.5 GSO Payload Systems Mass (MT) 3.25 Hcirc.