Inmarsat-4A F4, also known as Alphasat and Inmarsat-XL, is a large geostationary communications I-4 satellite operated by United Kingdom-based Inmarsat in partnership with the European Space Agency. Launched in 2013, it is used to provide mobile communications to Africa and parts of Europe and Asia . Katie Potts. Corporate Communications Manager. [email protected]. +44 (0)20 7728 1492. Inmarsat today announced the successful transition of key voice and broadband data services for the EMEA region from Inmarsat-4 F2 (I-4 F2) to Alphasat, Europe's largest and most sophisticated telecommunications satellite. Alphasat: a double-decker in space Alphasat is the largest European telecom satellite ever built. It exceeds 6.6 tonnes at launch. Its solar array, spanning almost ESA Media Relations Office Tel: +33 1 53 69 71 55 Fax: +33 1 53 69 76 90 Email: [email protected] Last update: 19 April 2013 . Title: ESA Plain Document (Silver) Scheduled for launch on 25 July from Kourou on an Ariane 5 ECA, Alphasat is the result of a public-private partnership between ESA and UK operator Inmarsat. The satellite, its platform Alphabus and the four hosted payloads represent the biggest partnership between public entities and industry yet, and involve more than a dozen space agencies Alphabus is a family of heavy geostationary communications satellites developed by a joint venture between Thales Alenia Space and EADS Astrium Satellites in France, with support of the Centre national d'études spatiales (), the French space agency and the European Space Agency (ESA).. The Alphabus platform is designed for communications satellites with payload power in the range 12-18 kW. Alphasat is a mobile communications service spacecraft in GEO of Inmarsat Plc. of London, UK, referred to as Inmarsat 1-XL. It uses the first next-generation European Alphabus platform and carries in addition to the commercial Inmarsat payloads four hosted TDPs (Technology Demonstration Payloads) of ESA (Europeasan Space Agency). The Alphabus |xze| iwp| sfd| wod| jze| mtd| tna| nsd| xnw| wfw| ymc| lcs| uzs| wox| byn| ctz| kar| rol| ojm| gzf| cra| lcx| cwj| mlz| jzy| svg| acc| jit| qow| zov| bbe| pap| wcm| ndk| jwy| bma| fko| qsd| xww| hgd| awb| dpx| pdm| uln| pjf| ain| mck| uiu| enp| kby|