![\"2016-11-17-030308\"](\"\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2016\/11\/2016-11-17-030308-350x244.jpg\")
The most recent use of the ES was during the ATV-5 mission over two years ago. Arianespace has relied on its Ariane 5 ECA since that mission. The ES will be used again on future Galileo launches.<\/p>\nAn Ariane 5 ES rocket successfully launched four Galileo satellites from the European Spaceport in Kourou, French Guiana on Thursday. The launch of the FM-12 through FM-14 involved the first use of the Ariane launch vehicle for a Galileo launch, following the previous use of the Soyuz rocket. Launch took place on schedule at 13:06 UTC.<\/p>\n
\nAriane 5 ES Launch:<\/p>\n
The Ariane 5 ES \u2013 which has previously been used to loft Automated Transfer Vehicles (ATV) to the International Space Station \u2013 has an estimated LEO launch capacity of 21,000 kg (46,000 lb).<\/p>\n
It includes all the performance improvements of Ariane 5 ECA core and boosters but replaces the ESC-A second stage with the restartable EPS used on Ariane 5 GS variants.<\/p>\n
The most recent use of the ES was during the ATV-5 mission over two years ago. Arianespace has relied on its Ariane 5 ECA since that mission. The ES will be used again on future Galileo launches.<\/p>\n
The launch \u2013 designated as Flight VA233 \u2013 marked another milestone in a busy year for Arianespace, with the Galileo mission the sixth heavy-lift flight of 2016 and its ninth overall this year with its complete launcher family, which also includes the Soyuz and lightweight Vega vehicles.<\/p>\n
The complete Galileo constellation will consist of 24 operational satellites along three orbital planes in medium Earth orbit (including two spares per orbit). The result will be Europe\u2019s largest ever fleet of satellites, operating in the new environment of medium-Earth orbit.<\/p>\n
Europe\u2019s own GPS constellation was deemed to be a major requirement, so as to ensure it wasn\u2019t stuck with having to rely on US or Russian systems. This decision is more apt given the increasingly uncertain geopolitical climate that has followed since Galileo\u2019s inception.<\/p>\n
Rocket building kits (adsbygoogle = window.adsbygoogle || []).push({});<\/p>\n The previous launch took the system to Full Operation Capability (FOC), with this launch the eighth Galileo mission \u2013 which brings the number of satellites in space up to 18.<\/p>\n The four satellites, Antonianna, Lisa, Kimberley and Tijmen \u2013 named for winners of a European children\u2019s drawing contest \u2013 weigh between 715 kg. and 717 kg., and were built by OHB System in Germany with U.K.-based Surrey Satellite Technology supplying the navigation payloads.<\/p>\n The 447 kg dispenser, designed by Airbus Defence and Space, is made from a combination of metal and composite materials for maximum stiffness, the dispenser has undergone very comprehensive testing at Airbus Defence and Space near Bordeaux, France, and the IABG testing centre in Ottobrunn, Germany \u2013 using both Galileo engineering models and an actual flight satellite, including fit, shock and separation testing.<\/p>\n The target orbit is actually 300 km below the Galileo constellation\u2019s final working altitude: this leaves the Ariane\u2019s EPS upper stage in a stable \u2018graveyard orbit\u2019, while the quartet of Galileos manoeuvre themselves up to their final set height.<\/p>\n The test campaign met all objectives, confirming the behaviour performs as predicted, after which the dispenser was shipped to Europe\u2019s Spaceport in French Guiana.<\/p>\n This mission is being performed on behalf of the European Commission under a contract with the European Space Agency (ESA).<\/p>\n Galileo\u2019s highly-accurate atomic clocks will provide the accuracy of the system. Each satellite emits a signal containing the time it was transmitted and the satellite\u2019s orbital position.<\/p>\n The Galileo program is Europe\u2019s initiative for satellite navigation, providing a highly accurate global positioning system under civilian control, along with European control centers and a worldwide network of sensor and uplink stations.<\/p>\n The launch campaign began with the launch of the first two experimental satellites, Giove-A, and Giove-B, orbited by Arianespace\u2019s Starsem affiliate on Soyuz launchers from Baikonur Cosmodrome in 2005 and 2008.<\/p>\n (Images: ESA and @dutchspace).<\/p>\n","protected":false},"excerpt":{"rendered":" An Ariane 5 ES rocket successfully launched four Galileo satellites from the European Spaceport in Kourou, French Guiana on Thursday. The launch of the FM-12 through FM-14 involved the first use of the Ariane launch vehicle for a Galileo launch, following the previous use of the Soyuz rocket. Launch took place on schedule at 13:06 UTC. Ariane […]<\/p>\n","protected":false},"author":1,"featured_media":29988,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[1540,1397],"class_list":["post-38918","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-ariane-5","tag-galileo"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/38918"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=38918"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/38918\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media\/29988"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=38918"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=38918"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=38918"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}![\"2016-11-17-000656\"](\"\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2016\/11\/2016-11-17-000656-350x250.jpg\")
The new A5 dispenser system kept the quartet of Galileo satellites in place during ascent, before deploying them in rapid sequence at a targeted release altitude of 23,222 km.<\/p>\n![\"2016-11-17-000516\"](\"\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2016\/11\/2016-11-17-000516-350x287.jpg\")
The birds sport two Passive Hydrogen Maser atomic clocks; two Rubidium atomic clocks; Clock monitoring and control unit; Navigation signal generator unit; L-band antenna for navigation signal transmission, C-band antenna for uplink signal detection, two S-band antennas for telemetry and tele-commands and a search and rescue antenna.<\/p>\n