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Ariane-5 Completes Flawless Third Test Flight
r bulletin 96 — november 1998 Ariane-5 Completes Flawless Third Test Flight A launch-readiness review conducted on Friday engine shut down and Maqsat-3 was 16 and Monday 19 October had given the go- successfully injected into GTO. The orbital ahead for the final countdown for a launch just parameters at that point were: two days later within a 90-minute launch Perigee: 1027 km, compared with the window between 13:00 to 14:30 Kourou time. 1028 ± 3 km predicted The launcher’s roll-out from the Final Assembly Apogee: 35 863 km, compared with the Building to the Launch Zone was therefore 35 898 ± 200 km predicted scheduled for Tuesday 20 October at 09:30 Inclination: 6.999 deg, compared with the Kourou time. 6.998 ± 0.05 deg predicted. On 21 October, Europe reconfirmed its lead in providing space Speaking in Kourou immediately after the flight, transportation systems for the 21st Century. Ariane-5, on its third Fredrik Engström, ESA’s Director of Launchers qualification flight, left no doubts as to its ability to deliver payloads and the Ariane-503 Flight Director, confirmed reliably and accurately to Geostationary Transfer Orbit (GTO). The new that: “The third Ariane-5 flight has been a heavy-lift launcher lifted off in glorious sunshine from the Guiana complete success. It qualifies Europe’s new Space Centre, Europe’s spaceport in Kourou, French Guiana, at heavy-lift launcher and vindicates the 13:37:21 local time (16:37:21 UT). technological options chosen by the European Space Agency.” This third Ariane-5 test flight was intended ESA’s Director -
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. -
Call for M5 Missions
ESA UNCLASSIFIED - For Official Use M5 Call - Technical Annex Prepared by SCI-F Reference ESA-SCI-F-ESTEC-TN-2016-002 Issue 1 Revision 0 Date of Issue 25/04/2016 Status Issued Document Type Distribution ESA UNCLASSIFIED - For Official Use Table of contents: 1 Introduction .......................................................................................................................... 3 1.1 Scope of document ................................................................................................................................................................ 3 1.2 Reference documents .......................................................................................................................................................... 3 1.3 List of acronyms ..................................................................................................................................................................... 3 2 General Guidelines ................................................................................................................ 6 3 Analysis of some potential mission profiles ........................................................................... 7 3.1 Introduction ............................................................................................................................................................................. 7 3.2 Current European launchers ........................................................................................................................................... -
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. -
6. the INTELSAT 17 Satellite
TWO COMMUNICATIONS SATELLITES READY FOR LAUNCH Arianespace will orbit two communications satellite on its fifth launch of the year: INTELSAT 17 for the international satellite operator Intelsat, and HYLAS 1 for the European operator Avanti Communications. The choice of Arianespace by leading space communications operators and manufacturers is clear international recognition of the company’s excellence in launch services. Based on its proven reliability and availability, Arianespace continues to confirm its position as the world’s benchmark launch system. Ariane 5 is the only commercial satellite launcher now on the market capable of simultaneously launching two payloads. Arianespace and Intelsat have built up a long-standing relationship based on mutual trust. Since 1983, Arianespace has launched 48 satellites for Intelsat. Positioned at 66 degrees East, INTELSAT 17 will deliver a wide range of communication services for Europe, the Middle East, Russia and Asia. Built by Space Systems/Loral of the United States, this powerful satellite will weigh 5,540 kg at launch. It will also enable Intelsat to expand its successful Asian video distrubution neighborhood. INTELSAT 17 will replace INTELSAT 702. HYLAS 1 is Avanti Communications’ first satellite. A new European satellite operator, Avanti Communications also chose Arianespace to orbit its HYLAS 2 satellite, scheduled for launch in the first half of 2012. HYLAS 1 was built by an industrial consortium formed by EADS Astrium and the Indian Space Research Organisation (ISRO), using a I-2K platform. Fitted with Ka-band and Ku-band transponders, the satellite will be positioned at 33.5 degrees West, and will be the first European satellite to offer high-speed broadband services across all of Europe. -
Cubesat Data Analysis Revision
371-XXXXX Revision - CubeSat Data Analysis Revision - November 2015 Prepared by: GSFC/Code 371 National Aeronautics and Goddard Space Flight Center Space Administration Greenbelt, Maryland 20771 371-XXXXX Revision - Signature Page Prepared by: ___________________ _____ Mark Kaminskiy Date Reliability Engineer ARES Corporation Accepted by: _______________________ _____ Nasir Kashem Date Reliability Lead NASA/GSFC Code 371 1 371-XXXXX Revision - DOCUMENT CHANGE RECORD REV DATE DESCRIPTION OF CHANGE LEVEL APPROVED - Baseline Release 2 371-XXXXX Revision - Table of Contents 1 Introduction 4 2 Statement of Work 5 3 Database 5 4 Distributions by Satellite Classes, Users, Mass, and Volume 7 4.1 Distribution by satellite classes 7 4.2 Distribution by satellite users 8 4.3 CubeSat Distribution by mass 8 4.4 CubeSat Distribution by volume 8 5 Annual Number of CubeSats Launched 9 6 Reliability Data Analysis 10 6.1 Introducing “Time to Event” variable 10 6.2 Probability of a Successful Launch 10 6.3 Estimation of Probability of Mission Success after Successful Launch. Kaplan-Meier Nonparametric Estimate and Weibull Distribution. 10 6.3.1 Kaplan-Meier Estimate 10 6.3.2 Weibull Distribution Estimation 11 6.4 Estimation of Probability of mission success after successful launch as a function of time and satellite mass using Weibull Regression 13 6.4.1 Weibull Regression 13 6.4.2 Data used for estimation of the model parameters 13 6.4.3 Comparison of the Kaplan-Meier estimates of the Reliability function and the estimates based on the Weibull regression 16 7 Conclusion 17 8 Acknowledgement 18 9 References 18 10 Appendix 19 Table of Figures Figure 4-1 CubeSats distribution by mass .................................................................................................... -
View / Download
www.arianespace.com www.starsem.com www.avio Arianespace’s eighth launch of 2021 with the fifth Soyuz of the year will place its satellite passengers into low Earth orbit. The launcher will be carrying a total payload of approximately 5 518 kg. The launch will be performed from Baikonur, in Kazakhstan. MISSION DESCRIPTION 2 ONEWEB SATELLITES 3 Liftoff is planned on at exactly: SOYUZ LAUNCHER 4 06:23 p.m. Washington, D.C. time, 10:23 p.m. Universal time (UTC), LAUNCH CAMPAIGN 4 00:23 a.m. Paris time, FLIGHT SEQUENCES 5 01:23 a.m. Moscow time, 03:23 a.m. Baikonur Cosmodrome. STAKEHOLDERS OF A LAUNCH 6 The nominal duration of the mission (from liftoff to separation of the satellites) is: 3 hours and 45 minutes. Satellites: OneWeb satellite #255 to #288 Customer: OneWeb • Altitude at separation: 450 km Cyrielle BOUJU • Inclination: 84.7degrees [email protected] +33 (0)6 32 65 97 48 RUAG Space AB (Linköping, Sweden) is the prime contractor in charge of development and production of the dispenser system used on Flight ST34. It will carry the satellites during their flight to low Earth orbit and then release them into space. The dedicated dispenser is designed to Flight ST34, the 29th commercial mission from the Baikonur Cosmodrome in Kazakhstan performed by accommodate up to 36 spacecraft per launch, allowing Arianespace and its Starsem affiliate, will put 34 of OneWeb’s satellites bringing the total fleet to 288 satellites Arianespace to timely deliver the lion’s share of the initial into a near-polar orbit at an altitude of 450 kilometers. -
VI. Wednesday 19 April Meeting with General
Ref. Ares(2019)5332022 - 21/08/2019 V I. Wednesday 19 April Meeting with General Electric 10:15-12:00 GE HQ in Boston 41 Farnsworth St, Boston TABLE OF CONTENTS 0. AGENDA OF MEETING Page No 57 1. STEERING BRIEF Page No 58 2. SPEAKING POINTS Page No 60 3. BACKGROUND Page No 61 2/20 0. AGENDA OF MEETING 10:00 Meeting the of GE: ( ) ( ). 11:00 Meeting with of GE 3/20 1.2 Objectives This is a courtesy meeting aiming at maintaining good relations. • Confirming the importance of research and business relations between GE and their European-based companies (e.g. Italian AVIO, Czech Walter), as well their 43 and 57 year-old joint ventures/partnerships with French SAFRAN and German MTU respectively, in a mutual interest of Europe and the USA. 1.3 Line to take • To state that global aviation markets and global industrial supply chain will profit from targeted R&D collaboration in energy, transport and health sectors; • To explain the 3Os initiative and link it with the digital and data industrial transformation; • Regarding FP9 and future Clean Sky activities, explain that despite the political uncertainties and upcoming assessments and recommendations, FP9 would be strongly oriented to be open for collaboration with the USA and GE is very welcome in that context. • To share your views that USA-based European companies and EU-based USA companies should have a level-playing field, especially in IPR and transfer of knowledge issues; • To share your views on the role of the European Commission in public-private collaboration on research and innovation and in particular within Clean Sky, that such collaborations go beyond research funding and create business opportunities; • To explain that GE will have a greater role in Clean Sky 2, as following the 1st call for core partners, GE Aviation was selected. -
PRESS-KIT-VV19-08122021-EN.Pdf
www.arianespace.com www.avio.com www.avio Arianespace’s seventh launch of 2021 with the second Vega of the year will place its satellite passengers into Sun-synchronous orbit. The launcher will be carrying a total payload of approximately 1 029 kg. The launch will be performed in Kourou, French Guiana. MISSION DESCRIPTION 2 PLÉIADES NEO 4 SATELLITE 3 Liftoff is planned on at exactly: FOUR AUXILIARY PAYLOADS 4 - 5 09:47 p.m. Washington, D.C. time, 10:47 p.m. Kourou time, VEGA LAUNCHER 6 01:47 a.m. Universal time (UTC), August 17, LAUNCH CAMPAIGN 7 03:47 a.m. Paris time, August 17, 10:47 a.m. Tokyo time, August 17. FLIGHT SEQUENCES 7 STAKEHOLDERS OF A LAUNCH 8 The nominal duration of the mission (from liftoff to separation of the satellites) is: 1 hour, 44 minutes and 59 seconds. Satellite: Pléiades Neo 4 Customer: Airbus Defence and Space - Intelligence Satellites: Four auxiliary payloads Cyrielle BOUJU [email protected] +33 (0)6 32 65 97 48 For Pléiades Neo For the four auxiliary payloads Francesco DE LORENZO • Perigee altitude: 614 km • Perigee altitude: 540 km [email protected] • Apogee altitude: 625 km • Apogee altitude: 554 km + 39 (0)6 97285317 • Inclination : 97.89 degrees • Inclination : 97.55 degrees First Pléiades Neo constellation satellites have been achieved within only five years, thanks to the hard work of over 500 people, across seven sites in Europe, to deliver first-class 14 km swath imagery at 30 cm native resolution, capable to daily collect up to 2 million km² and image the entire Earth landmass five times per year. -
2015152450 Presentation-Airbus
Accès Européen à l’Espace, pourquoi Ariane 6 et Airbus Safran Launchers ? Assemblée Générale ISAE 11/06/2015 H. GILIBERT – CTO - Airbus Safran Launchers 1 Eléments de contexte This document is the property of Airbus Safran Launchers. It shall be not communicated to third parties without prior written agreement. Its content shall not be disclosed. Airbus Safran Launchers Holding/SAS/GmbH. All rights reserved. Janvier 2015 2 Le contexte des lanceurs spatiaux en Europe • Les lanceurs spatiaux servent avant tout la Garantie de l’Accès Stratégique à l’Espace pour les Etats Européens. • L’activité est supportée par les Etats Membres de l’Agence Spatiale Européenne (esa). • Quelques lancements institutionnels à l’année (essentiellement avec VEGA, et SOYOUZ actuellement). • L’économie de la filière est rendue supportable pour les Etats Européens par la capture de lancements commerciaux, qui assurent la récurrence de production et forcent à la compétitivité. • Ariane 5 (6 à 7 lancements par an) réalise > 80 % de ses lancements sur le marché commercial (leader mondial ~50 % du marché ouvert). This document is the property of Airbus Safran Launchers. It shall be not communicated to third parties without prior written agreement. Its content shall not be disclosed. Airbus Safran Launchers Holding/SAS/GmbH. All rights reserved. janvier 2015 3 L’activité Lancements Spatiaux dans le monde This document is the property of Airbus Safran Launchers. It shall be not communicated to third parties without prior written agreement. Its content shall not be disclosed. Airbus Safran Launchers Holding/SAS/GmbH. All rights reserved. janvier 2015 4 Les évolutions du marché des lancements (1/2) Les « moyens à gros » Les lancements sur le marché commercial sont essentiels pour soutenir l’Accès Européen Autonome à l’Espace Apparition de satellites à propulsion électrique, plus légers -> modifiera peu à peu les besoins mission sur la décennie à venir. -
Atlas V Cutaway Poster
ATLAS V Since 2002, Atlas V rockets have delivered vital national security, science and exploration, and commercial missions for customers across the globe including the U.S. Air Force, the National Reconnaissance Oice and NASA. 225 ft The spacecraft is encapsulated in either a 5-m (17.8-ft) or a 4-m (13.8-ft) diameter payload fairing (PLF). The 4-m-diameter PLF is a bisector (two-piece shell) fairing consisting of aluminum skin/stringer construction with vertical split-line longerons. The Atlas V 400 series oers three payload fairing options: the large (LPF, shown at left), the extended (EPF) and the extra extended (XPF). The 5-m PLF is a sandwich composite structure made with a vented aluminum-honeycomb core and graphite-epoxy face sheets. The bisector (two-piece shell) PLF encapsulates both the Centaur upper stage and the spacecraft, which separates using a debris-free pyrotechnic actuating 200 ft system. Payload clearance and vehicle structural stability are enhanced by the all-aluminum forward load reactor (FLR), which centers the PLF around the Centaur upper stage and shares payload shear loading. The Atlas V 500 series oers 1 three payload fairing options: the short (shown at left), medium 18 and long. 1 1 The Centaur upper stage is 3.1 m (10 ft) in diameter and 12.7 m (41.6 ft) long. Its propellant tanks are constructed of pressure-stabilized, corrosion-resistant stainless steel. Centaur is a liquid hydrogen/liquid oxygen-fueled vehicle. It uses a single RL10 engine producing 99.2 kN (22,300 lbf) of thrust. -
Phase Change: Titan’S Disappearing Lakes
Phase Change: Titan’s Disappearing Lakes Investigation Notebook NYC Edition © 2018 by The Regents of the University of California. All rights reserved. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage or retrieval system, without permission in writing from the publisher. Teachers purchasing this Investigation Notebook as part of a kit may reproduce the book herein in sufficient quantities for classroom use only and not for resale. These materials are based upon work partially supported by the National Science Foundation under grant numbers DRL-1119584, DRL-1417939, ESI-0242733, ESI-0628272, and ESI-0822119. The Federal Government has certain rights in this material. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. These materials are based upon work partially supported by the Institute of Education Sciences, U.S. Department of Education, through Grant R305A130610 to The Regents of the University of California. The opinions expressed are those of the authors and do not represent views of the Institute or the U.S. Department of Education. Developed by the Learning Design Group at the University of California, Berkeley’s Lawrence Hall of Science. Amplify. 55 Washington Street, Suite 800 Brooklyn, NY 11201 1-800-823-1969 www.amplify.com Phase Change: Titan’s Disappearing Lakes