News Article | August 2, 2017
Arianespace has successfully launched two Earth observation satellites for civil and military applications OPTSAT-3000 for the Italian Ministry of Defence; and Venµs, a mission of the Israel Space Agency (ISA) - a government body sponsored by the country's Ministry of Science & Technology - and the French CNES space agency (Centre National d'Etudes Spatiales). The launch took place on Tuesday, August 1, 2017 at 10:58:33 pm (local time in Kourou) from the Guiana Space Center (CSG), Europe's Spaceport in French Guiana. This was Arianespace's eighth mission of the year and the second using Vega in 2017. It marked the 10th successful Vega launch in a row since this light-lift vehicle started its career at the Guiana Space Center in 2012. Additionally, today's mission reaffirmed Vega's excellence and versatility. As a highly versatile launcher, Vega has now logged 10 launches, all successful, since starting operation in 2012 at the Guiana Space Center. Over the past five years of launch activity, Vega has orbited a total of 25 satellites for 19 customers, both government and commercial. In June 2017, Arianespace announced the first two contracts for the Vega C launcher. Scheduled to make its first flight in 2019, Vega C will offer higher performance than the current version in terms of payload weight and usable volume. It will be able to handle an even wider range of missions (from nanosatellites to large optical and radar observation satellites), and will further enhance the launch service competitiveness. Vega and Vega C now have an order book totaling nine launches, with one-third of them for European governments and two-thirds for commercial customers in export markets. This mission also marks Arianespace's continued focus on innovation, heralding the new payload fairings to be used on its upcoming Ariane 6 and Vega C launchers. As with the most recent Ariane 5 mission (on June 28, 2017), the new "out of autoclave" fairing, built by RUAG, protected the satellite passengers on Flight VV10. On this VV10 mission, Arianespace also anticipated the evolution for how Vega launch campaigns are carried out, based on the framework agreement defining the operational organization for Ariane 6 and Vega C, which was approved by ESA, CNES, ArianeGroup and Avio. Industrial prime contractor Avio now assumes responsibility for preparing the launcher until its liftoff (H0), while Arianespace maintains full responsibility for customer relations, as well as operations for the final countdown and the launch decision. This new operational organization is to allow more integrated operation of teams at the Guiana Space Center for enhanced competitiveness. Two Earth observation satellites for Italy, Israel and France OPTSAT-3000 is the fourth satellite launched by Arianespace for the Italian Ministry of Defence since 2001. This Earth observation satellite will enable the acquisition and use of high-resolution images from any part of the globe. The OPTSAT-3000 system will be interoperable with Italy's second-generation COSMO-SkyMed radar satellites. This will give the Italian Ministry of Defence access to state-of-the-art technologies, and ensure maximum operational capabilities with the combined optical and radar data offered by these two systems. Telespazio is responsible for the entire system, with OHB Italia in charge of launch services and related engineering support. Venµs is an Earth and vegetation observation and exploratory mission, designed to monitor the effects of climate change. This mission is part of a joint space program between the Israel Space Agency (ISA), a government body sponsored by the country's Ministry of Science and Technology, and the French CNES space agency (Centre National d'Etudes Spatiales). In fact, the full name of the satellite summarizes its mission: "Vegetation and Environment monitoring on a New MicroSatellite." By analyzing and comparing images of the same area at different times, researchers can evaluate soil conditions, understand the development of vegetation, and detect the outbreak of a disease or the contamination of a field. Israel Aerospace Industries Ltd (IAI) built both OPTSAT-3000 and Venµs, which are the third and fourth satellites from this manufacturer to be launched by Arianespace, following Amos 1 (in May 1996) and Amos 2 (in December 2003, via Arianespace's Starsem affiliate). IAI is the largest aerospace and defense company in Israel. Shortly after the announcement of the orbital injection of these two satellites, Arianespace Chief Executive Officer Stéphane Israël said: "With this second Vega launch of 2017, and its 10th success in a row since being introduced at the Guiana Space Center, Arianespace is very proud to support two major Earth observation programs for Italy, Israel and France. We are very honored by this mark of trust from the Italian Ministry of Defence for which this launch - via our direct customer OHB Italia and on behalf of Telespazio - marks the fourth by Arianespace since 2001. Concerning Venµs, thanks go to the Israel's Ministry of Science and Technology (MOST), which entrusted us with this symbolic mission at the service of the environment, conducted by the Israel Space Agency (ASI) and the Centre National d'Etudes Spatiales (CNES). Equally, 'bravo' to Israel Aerospace Industries, which built both satellites: OPTSAT-3000 and Venµs. "My congratulations also go to our industrial prime contractor Avio, for Vega's excellence and availability. And of course, my thanks to the European Space Agency and national agencies, especially the Italian Space Agency, for supporting the Vega program. Thanks as well to CNES/CSG, along with the companies and all staff at the launch base, who continue to support us as we go from success to success. Lastly, 'bravo' to everyone at Arianespace for this eighth successful launch of the year, and the 265th by the family of Arianespace launchers at CSG." The OPTSAT-3000 passenger is a very-high-resolution optical Earth observation satellite that will provide daytime images of the entire planet. It was placed into Sun-synchronous orbit at an altitude of about 450 km. With a mass of 368 kg. at launch, OPTSAT-3000 offers a design life of 7 years. The Venµs payload is a high-resolution, high-frequency Earth observation satellite, which will produce high spatial and temporal resolution images. It is equipped with a camera built by Elbit Electro-Optic Systems Elop Ltd for CNES. The satellite was placed into a Sun-synchronous orbit at an altitude of about 720 km. It weighed 264 kg. at launch and offers a design life of 4.5 years. Both OPTSAT-3000 and Venµs were built by Israel Aerospace Industries in Tel Aviv, Israel, using an IMPS Bus platform. Arianespace uses space to make life better on Earth by providing launch services for all types of satellites into all orbits. It has orbited more than 550 satellites since 1980, using its family of three launchers, Ariane, Soyuz and Vega, from launch sites in French Guiana (South America) and Baikonur, Kazakhstan. Arianespace is headquartered in Evry, near Paris, and has a technical facility at the Guiana Space Center, Europe's Spaceport in French Guiana, plus local offices in Washington, D.C., Tokyo and Singapore. Arianespace is a subsidiary of ArianeGroup, which holds 74% of its share capital, with the balance held by 17 other shareholders from the European launcher industry. Please follow SpaceRef on Twitter and Like us on Facebook.
News Article | June 2, 2017
Following the launch earlier today of the EUTELSAT 172B satellite, Eutelsat Communications (Paris:ETL) (NYSE Euronext Paris: ETL) announces a new launch services contract with Arianespace. The Arianespace order book now includes three future launches for Eutelsat in addition to the 32 Eutelsat satellites already launched by the European launch services provider over more than 30 years for one of the world’s leading satellite operators. Of the three satellites to be launched, EUTELSAT 7C (built by SSL) will be orbited in 2018, followed in 2019 by Eutelsat Quantum built by Airbus and the high throughput satellite built by Thales. Commenting on this latest contract, Rodolphe Belmer, Chief Executive Officer of Eutelsat, said: “Following today’s historic Ariane launch of Europe’s first high-power all-electric satellite, we are proud to once again team up with Arianespace, a long-standing partner and a leader in Europe's vibrant space industry. The technological diversity of the three new satellites entrusted to Arianespace is a compelling reflection of our commitment to innovation for the greater benefit of our customers, and to maintaining our competitiveness.” Stéphane Israël, Chief Executive Officer of Arianespace, added: “This latest contract bolsters Eutelsat’s position as a benchmark customer of Europe’s heavy launcher, since Ariane 5 will launch three satellites for the European operator in 2018 and 2019. Our hope is that Ariane 6 will subsequently take over so that we can help Eutelsat meet its objectives even more efficiently.” Established in 1977, Eutelsat Communications (Euronext Paris: ETL, ISIN code: FR0010221234) is one of the world's leading and most experienced operators of communications satellites. The company provides capacity on 39 satellites to clients that include broadcasters and broadcasting associations, pay-TV operators, video, data and Internet service providers, enterprises and government agencies. Eutelsat’s satellites provide ubiquitous coverage of Europe, the Middle East, Africa, Asia-Pacific and the Americas, enabling video, data, broadband and government communications to be established irrespective of a user’s location. Headquartered in Paris, with offices and teleports around the globe, Eutelsat represents a workforce of 1,000 men and women from 37 countries who are experts in their fields and work with clients to deliver the highest quality of service. To use space for a better life on earth, Arianespace guarantees access to space transportation services and solutions for any type of satellite, commercial as well as institutional, into any orbit. Since 1980, Arianespace has performed missions placing more than 550 satellites into orbit with its three launchers: Ariane, Soyuz and Vega. Arianespace is headquartered in Evry, France near Paris, and has a facility at the Guiana Space Center in French Guiana, plus local offices in Washington, D.C., Tokyo and Singapore. Arianespace is a subsidiary of Airbus Safran Launchers, which holds 74% of its share capital; the balance is held by 17 other shareholders from the European launcher industry.
Valli M.,Polytechnic of Milan |
Lavagna M.,Polytechnic of Milan |
61st International Astronautical Congress 2010, IAC 2010 | Year: 2010
The 21st century has begun with a significant interest in smaller satellites and therefore in the need for appropriate launch services. Europe's answer to this need is the development of the first European small launcher, named Vega, to guarantee an easier, more affordable and timely available access to space. This work presents the design of a robust control law, and the related control system architecture, for the Vega launcher ballistic phase, taking into account the complete six degrees of freedom dynamics. To gain robustness a non-linear control approach has been preferred: more specifically the Lyapunov's second stability theorem has been exploited, being a very powerful tool to guarantee asymptotic stability of the controlled dynamics. The dynamics of Vega's actuators has also been taken into account. The system performance has been checked and analyzed by numerical simulations run on real mission data for different operational and configuration scenarios, and the effectiveness of the synthesized control highlighted: in particular scenarios including a wide range of composite's inertial configurations performing various typologies of maneuvers - such as variable-angle slew maneuvers, waiting phases, spin up/down as well as controlled boost phases - have been run. The robustness of the controlled dynamics has been validated by a 100 cases Monte Carlo analysis campaign: the containment of the dispersion for the controlled variables - say the composite roll, yaw and pitch angles - confirmed the wide validity and generality of the proposed control law. This paper will show the theoretical approach and discuss the obtained results. Copyright ©2010 by the International Astronautical Federation. All rights reserved.
News Article | October 26, 2016
Arianespace has successfully launched the Sky Muster™ II satellite for Australian operator nbn (National Broadband Network) and the GSAT-18 satellite for the Indian space agency ISRO (Indian Space Research Organisation). The launch took place on October 5 at 5:30 pm (local time) from the Guiana Space Center (CSG) in Kourou, French Guiana. Today's flight was the eighth of the year for Arianespace and the fifth by an Ariane 5 launcher, which logged its 74th successful mission in a row, equaling the record set by the predecessor Ariane 4 from 1995 to 2003. With today's successful mission for Australia and India, Arianespace proudly supports two major national space programs. This launch was the 74th success in a row for Ariane 5, equaling the record set by the Ariane 4 launcher from 1995 to 2003. Ariane 5 has carried out 74 consecutive successful missions, launching 145 payloads that weigh a cumulated total of more than 623 metric tons, including: - 133 main payloads, weighing 618 metric tons, - 12 secondary payloads, weighing 5 metric tons. During this uninterrupted string of 74 launches, Ariane 5s have orbited 24 more satellites than Ariane 4 during this equivalent series of successes, launching a combined total of 348 metric tons into orbit. This unprecedented series of successful launches in the marketplace once again proves the exceptional availability and reliability of Arianespace's heavy-lift launcher. Sky Muster™ II is the second satellite launched by Arianespace for the Australian operator nbn (National Broadband Network), owned by the Commonwealth of Australia. It is also the eighth satellite that Arianespace has launched for Australia, following Aussat 3, Optus C1/D1/D2/D3 and 10, and Sky Muster™ I, launched in September 2015. Sky Muster™ II will help extend high-speed internet service to the entire country, including the Norfolk, Christmas, Macquarie and Cocos islands, in conjunction with the services currently delivered by Sky Muster™ I. With Sky Muster™ II, the operator meets its objectives of developing the digital economy in Australia, bridging the digital divide between urban and rural areas, and enhancing connections between this vast territory and the rest of the world. GSAT-18 is the 20th satellite from ISRO (Indian Space Research Organisation) to be launched by Arianespace. It will provide telecommunications services for India and bolsters ISRO's current fleet of 14 operational telecom satellites. GSAT-18 will contribute to ISRO's mission of using space to help develop the Indian subcontinent through the deployment of all types of satellites (including Earth observation, telecommunications, broadcasts of educational programs, science and navigation). Along with its own launch capacity, ISRO has entrusted Arianespace with its satellites for over 35 years, starting with the launch by Ariane 1 of the APPLE (Ariane Passenger Payload Experiment) experimental satellite in 1981. The current Arianespace order book includes two ISRO satellite launches in 2017: GSAT-11 and GSAT-17. Shortly after the announcement of the orbital injection of the two satellites, Arianespace Chairman and Chief Executive Officer Stéphane Israël said: "With this fifth Ariane 5 launch in 2016, Arianespace proudly places its excellence at the service of two strategic space programs for Australia and India. We are especially honored to have been chosen by the Australian operator nbn to launch both of its satellites, and by ISRO, with our 20th launch for the Indian space agency today. I would also like to thank our long-standing partner SSL, which produced the Sky Muster™ II satellite. "This 74th successful launch in a row by Ariane 5 equals the record set by Ariane 4. I would like to congratulate all our partners for this team success: the European Space Agency and the ESA member states participating in the Ariane program; our industrial prime contractor and lead shareholder, Airbus Safran Launchers as well as the entire European industry for Ariane; CNES/CSG along with all companies and staff at the launch base, who support us as we go from success to success. And of course, thanks to everybody at Arianespace for this eighth successful launch of 2016." To use space for a better life on earth, Arianespace guarantees access to space transportation services and solutions for any type of satellite, commercial as well as institutional, into any orbit. Since 1980, Arianespace has placed more than 500 satellites into orbit with its three launchers, Ariane, Soyuz and Vega, from French Guiana in South America, and from Baikonur, Kazakhstan (central Asia). Arianespace is headquartered in Evry, France near Paris, and has a facility at the Guiana Space Center in French Guiana, plus local offices in Washington, D.C., Tokyo and Singapore. Please follow SpaceRef on Twitter and Like us on Facebook.
News Article | February 15, 2017
Arianespace has successfully launched two satellites: SKY Brasil-1 for AT&T/DIRECTV; and Telkom 3S for Telkom Indonesia as part of a turnkey contract with Thales Alenia Space. The flight took place on Tuesday, February 14, 2017 at 6:39 p.m. (local time) from the Guiana Space Center, Europe's Spaceport in Kourou, French Guiana. Christophe Sirugue, French Minister of State for Industry, was on hand for the launch. Today's launch was the second of the year for Arianespace and the first with the Ariane 5 heavy launcher, which also recorded its 77th successful mission in a row. SKY Brasil-1 is the 10th satellite launched by Arianespace for AT&T/DIRECTV, a world leading provider of digital television programs. Its previous mission for this operator was in May 2015, with an Ariane 5 dual launch that orbited SKY Mexico-1 and DIRECTV-15. AT&T subsidiary DIRECTV Latin America provides services to more than 12.5 million subscribers, mainly in Venezuela, Argentina, Chile, Colombia and Brazil. SKY Brasil-1 is a high-definition direct-to-home (DTH) TV broadcast satellite, covering Brazil and the north Atlantic Ocean. Telkom 3S is the third satellite to be launched by Arianespace for Telkom Indonesia, this time as part of a turnkey contract with Thales Alenia Space. The previous satellites for this operator, Telkom 1 and Telkom 2, were launched by Arianespace in 1999 and 2005, respectively. All Telkom Indonesia satellites now in operation were orbited by Arianespace. Telkom Indonesia is an Indonesian state-owned company that supplies telecommunications, information, media and entertainment services (TIMES) to millions of customers throughout the Indonesian archipelago. Telkom 3S will provide high-definition television (HDTV) broadcast services, as well as mobile communications and Internet applications, with a coverage zone spanning Indonesia, Southeast Asia and a portion of Malaysia. Arianespace and Airbus Defence and Space have teamed up since the European launch services company was founded in 1980. SKY Brasil-1 is the 116th satellite built by Airbus Defence and Space (or its predecessors) to be launched by Arianespace, which has 17 more satellites produced by the company in its order book, not including the satellites in the OneWeb constellation. Arianespace and Thales Alenia Space have worked together since 1981. Including Telkom 3S, Arianespace has launched 146 satellites built by Thales Alenia Space (or its predecessors), and has nine more satellites from this manufacturer in its order book. The first Ariane 5 flight of the year was also the 77th successful launch in a row of Ariane 5, a string of successes that reaches back to 2003 and clearly demonstrates the exceptional reliability of Arianespace's heavy launcher. This year's Arianespace mission manifest includes up to 7 Ariane 5 launches in 2017 - a "Triple 7" for Ariane 5! Shortly after the announcement of the orbital injection of the two satellites, Stéphane Israël, Chairman and CEO of Arianespace, said: "Arianespace carried out its first Ariane 5 launch of the year this evening for our American and Indonesian customers, also marking the 77th successful launch in a row of our heavy launcher. We are both pleased and proud to have carried out this successful mission in the presence of Christophe Sirugue, French Minister of State for Industry; and Jean-Luc Moudenc, Mayor of Toulouse and President of the Community of Ariane Cities for 2017. We are honored by the ongoing trust expressed by the operators AT&T/DIRECTV, for whom we have orbited 10 satellites since 1993, and Telkom Indonesia, for whom we have launched all satellites now in operation. I would also like to thank our long-standing partners Airbus Defence and Space and Thales Alenia Space, who built the two satellites launched on this mission. "Congratulations to all partners who contributed to the exceptional reliability and availability of our Ariane 5 launcher: the European Space Agency (ESA), which provides essential support for the Ariane program; Airbus Safran Launchers and the entire European launcher industry; CNES/CSG, our ground segment companies and all staff at the space center, who continue to work alongside us as we go from success to success. And of course I would like to congratulate everybody at Arianespace for this successful second launch of the year." Arianespace uses space to make life better on Earth by providing launch services for all types of satellites into all orbits. It has orbited more than 550 satellites since 1980, using its family of three launchers, Ariane, Soyuz and Vega, from launch sites in French Guiana (South America) and Baikonur, Kazakhstan. Arianespace is headquartered in Evry, near Paris, and has a technical facility at the Guiana Space Center, Europe's Spaceport in French Guiana, plus local offices in Washington, D.C., Tokyo and Singapore. Arianespace is a subsidiary of Airbus Safran Launchers, which holds 74% of its share capital, with the balance held by 17 other shareholders from the European launcher industry. Please follow SpaceRef on Twitter and Like us on Facebook.
Thompson S.P.,Arianespace |
Andersson G.,RUAG Space Sweden |
Davies W.,RUAG Space Switzerland |
European Space Agency, (Special Publication) ESA SP | Year: 2012
On October 21st, 2011, lifting off from the ELS launch site in French Guiana, a Soyuz ST-B and FREGAT upper stage, carried the first two Galileo IOV spacecraft on a 3-hour 49-minute flight and successfully injected the 2 Galileo Navigation spacecraft into a circular medium-Earth orbit. The Dispenser System, the subject of this paper, is the equipped launch vehicle hardware mated directly to the FREGAT upper stage and built specifically to carry 2 Galileo IOV spacecraft during all ground and flight operations up to the moment of separation. The Dispenser System was purposely built for the Galileo IOV missions under European Space Agency and Arianespace contract. The prime contractor was selected to be RUAG Space in Sweden (Linköping) for all Dispenser "System and Management" activities and with subcontracts placed to RUAG Space in Switzerland (Zurich) for the Dispenser "Structure" and EADS CASA Spain (Madrid) for the "Hold Down and Release System" (HRS) hardware. The "Structure" is designed to transfer ground and flight loads between the spacecraft and the Launch Vehicle. The upper part, an aluminium sandwich box-type structure, interfaces with the satellites, whereas the lower part transitions to a lower frame, via a CFRP strut arrangement, to interface with the FREGAT upper stage. The spacecraft separation sub-system is composed of two sets of four low-shock "HRS" units and four "pushers" enabling to firmly hold the satellites during ground and flight operations and to release them when ordered by the Launch Vehicle. The Dispenser System also comprises an electrical sub-system and MLI. This paper summarises the overall Design, Development and Verification activities leading to the Qualification of the Dispenser System hardware. This will include the Structure and HRS contribution to the overall System Qualification. An overview of the System hardware will be described along with DDV logic, some key analysis performed and several of the full scale qualification tests achieved (at element and system level) leading to the pronouncement of qualification. Such tests being mechanical strength, stiffness, dynamic and functional. The latter for overall performance validation. Several of the results will be presented in accordance with defined specifications. In addition, the Dispenser System is equipped with telemetry instrumentation comprising 20 sensors. These sensors are dedicated to the monitoring of the flight environment in the vicinity of the spacecraft. The conclusions of the mechanical and thermal data obtained during the first flight are highlighted.
Palmieri D.,European Space Agency |
Pardos I.,European Space Agency |
Nicolini D.,European Space Agency |
Pizzicaroli A.,ELV S.p.A. |
And 2 more authors.
14th International Conference on Space Operations, 2016 | Year: 2016
VEGA was born to cover an essential role within the family of European launchers; the four-stage vehicle is tailored to cover a wide range of missions in low earth orbit and will complement Ariane (which is optimized for large satellites and missions to GTO and LEO as well as escape missions) and Soyuz (tailored for medium satellites to LEO and small spacecraft to GTO). The Vega launch system is developed by the European Space Agency, and commercially operated by ELV (launcher system prime contractor) and Arianespace (launch service provider). The qualification flight from Europe’s Spaceport in French Guiana was performed in February 2012. A second successful qualification flight in the frame of the ESA operated Verta flights was performed in May 2013 carrying the ESA Proba Vegetation spacecraft and the first non-ESA institutional earth observation spacecraft, the Vietnamese VNREDSat. The third flight was performed in May 2014 carrying the commercial earth observation spacecraft DZZ for the Government of Kazakhstan using a Verta launch vehicle. The fourth flight, a Verta flight carrying the ESA IXV re-entry capsule, was performed in February 2015. The fifth flight was performed in June 2015 carrying the European earth observation spacecraft Sentinel-2 using a Verta launch vehicle. The last Verta flight and sixth Vega flight was performed in December 2015 carrying the LISA Pathfinder scientific spacecraft. From 2016 onwards Vega will enter full commercial operations having completed the transition phase under the ESA-led Verta development program, leaving the commercial exploitation of the launch system fully in industry hands, led by ELV (a joint AVIO and ASI company) and Arianespace, with the support of CNES for the launch range operations. ESA will continue supporting the Vega commercial operations by running necessary delta-developments and improvements on the existing launch system, and in parallel by running the development of the upgraded higher performance Vega-C launch system expected to enter into commercial operations in 2019. This paper presents an overview of the current and future Vega launch system operations, in particular on ongoing improvements and evolutions during commercial operations and beyond for the new the launch system, with a focus on launch operations and on the launch complex and launch range facilities. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
Roviera P.M.,European Space Agency |
Bertrand J.,French National Center for Space Studies |
13th International Conference on Space Operations, SpaceOps 2014 | Year: 2014
Ground segment is often considered as a secondary issue with respect to the flight segment, nevertheless a launch complex is a key element of a space system and gives a significant contribution to the success of a launch system and to its long-term sustainability. The launch complex reliability, availability and affordability are key elements to ensure access to space. While in the past the ground segment design tended to be only an outcome of the flight segment requirements, the new global and competitive context require that the launch system shall be considered as a whole. In particular, not only ground segment development costs but also its operational and long term global ownership costs have to be taken into account since the very first project trade-offs. Furthermore, the increasing demand for a more environmental conscious and sustainable development approach and the associated regulatory requirements shall be duly taken on board. This paper intends to give an overview of Ariane and other ESA launch complexes at Kourou, French Guiana, from the design concept to the operational success story return of experience, in view of future developments. Also specific aspects related to ESA launch vehicles manufacturing facilities and interfaces with the launch range will be dealt.
De Chambure D.,European Space Agency |
Guedron S.,French National Center for Space Studies |
61st International Astronautical Congress 2010, IAC 2010 | Year: 2010
The ARIANE 5 ECA launcher is the European workhorse. The current version, dubbed 'PA-2' was successfully qualified in 2009 in a generic way by ASTRIUM in the frame of the ESA Ariane development programme PA-2. During the exploitation phase, ESA funds the so-called "level 1" post flight analysis, based on flight measurement, that provide very important information on the launcher behaviour and its functional parameters at stages and engines level. Beside these key information, some in-house analysis were performed at CNES and ESA but also at ASTRIUM, SNECMA and ARIANESPACE in order to identify some affordable improvement that could allow to increase the ARIANE 5 ECA launch vehicle performance. The status beginning of 2009 was sufficiently promising to initiate a project called 'A5ECA Performance Improvement Plan'. The given target was to achieve at least 10 T performance equivalent single launch for GTO mission, by end 2010, beginning 2011. With the Payload performance improvement plan achieved, ARIANESPACE will provide the adequate response to the new customer needs for the dual launch configuration, without any negative impact on the environment for the Payloads. This paper will address the current status and main results obtained. It will focus on the technical description of the most promising selected performance improvement tracks that will be qualified at launch system level. Among them are: - Interface Flange deletion at upper part level - Reduction of discrepancies for VULCAIN 2 and HM7B functional parameters based on post flight data analysis - Optimisation of the VULCAIN 2 and HM7B mixture ratio within the qualified domain - Improvement of the LH2 thermal residual mastering of the ESC-A upper stage - System constraints release The corresponding expected payload mass capacity will be given. Copyright © 2010 by GUEDRON & al.
Schmitt D.,ARIANESPACE |
Acta Astronautica | Year: 2010
While successfully and regularly operating the Ariane 5 ECA launch vehicle since 3 years, Arianespace continues to work to improve its Service & Solutions offer following three main axes: a continuous effort towards the improvement of manufacturing and operational processes, the preparation of a new batch order of launch vehicles to industry, and its participation in the preparation of ESA programs that will be proposed to ESA Council meeting at ministerial level in November 2008. While focusing on Ariane 5 activities, the paper will describe how Arianespace is getting ready to operate the European family of launch vehicles.1.Recent flights resultsIn this first part, the paper will describe the results of the Ariane 5 flights performed over the last 12 months. It will address Ariane 5 ECA flights and also the first Ariane 5 ES flight for the European ATV mission. The major launch campaign and flight events will be presented with subsequent discussions.2.Ariane 5 program driversAfter a brief description of the expected launch services demand for the next years, the paper will discuss the Ariane 5 production programs drivers and more specifically: •the continuous quality improvement process implemented to ensure regular Ariane 5 operations: configuration stabilization, enlargement of the launcher qualification domain, manufacturing and preparation operations review with the objective to smooth operational processes and control the risks and non-conformance number and•the main characteristics of the next batch order in preparation with the European Industry. Arianespace will order 35 launchers delivered ready for launch in the coming years. It takes into account an increased production rate and the industrialisation process implementation.3.Next stepsIn parallel with the development of Ariane 5 ECA activities, the main challenge for Arianespace for the next years is its transformation as an operator of a family of launchers. The paper will describe the preparation of exploitation of Vega and Soyuz at the Guiana Space Centre (CSG) in synergy with Ariane 5.The paper will finally present the Arianespace approach for future European programs expected to be decided for the coming years in Europe. © 2009 Elsevier Ltd. All rights reserved.