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  • Hours before a European Space Agency Ariane 5 rocket launch, a computer monitor displays cryogenic data at the CDL3 launch centre at ESA's Space Centre at Kourou, French Guiana. It shows the status of liquid oxygen and liquid hydrogen propellant systems within a Vulcain engine. Stored in the launcher tanks and fed to the engine, they react chemically and expand in the engine combustion chamber then forced through the nozzle to provide the thrust that propels the vehicle into orbit. Cryogenic engines utilise propellants that are liquid under cryogenic conditions, at a temperature much lower than normal ambient conditions (-251°C for hydrogen and -184°C for oxygen). The advantage of cryogenic propellants is that they provide the highest thrust performance. .
    esa_guiana05014-08-2007.jpg
  • A full-scale mock-up of a multinational 50.5 meter-high European Space Agency's (ESA) Ariane 5 rocket is lit by floodlights in an early tropical evening at the main entrance to Guiana Space Centre, Kourou, French Guiana, South America. Glowing orange by the warm lighting, it makes an impressive model against the fading equatorial sky. Seen in scale, a lone human figure stands at the foot of the launcher that in reality, sends massive 8,000 kg payloads into orbit for a variety of communications and International Space Station purposes. Powered by Snecma-made Vulcain engines and boosted by Europropulsion solid motors, these rockets are launched from this facility on the Guiana coast. The building to the left are the CNES offices belong to the French Space Agency.
    esa_guiana23515-08-2007.jpg
  • A full-scale model of a 50.5 meter-high European Space Agency's (ESA) Ariane 5 rocket at museum of Guiana Space Centre
    esa_guiana23615-08-2007.jpg
  • A full-scale model of a 50.5 meter-high European Space Agency's (ESA) Ariane 5 rocket at museum of Guiana Space Centre
    esa_guiana23215-08-2007.jpg
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