"Mr Charmeau added: "And we have other specificities in Europe, such as the technology of propulsion, which is much better than the US one, both in solid and cryogenic propulsion. This allows us to launch [two satellites at once], which is another factor for competitiveness, maybe much better than re-usability - we will see in the future. And one characteristic, for example, is that we have only one (main) engine on the Ariane 64, whereas our competitor is going for re-usability because he is using much more engines. (The Falcon 9 has nine engines on its first stage.)"
""I could talk for two hours about the advantages or disadvantages of re-usability. Is it appropriate for the European situation? I don't say 'no'; I don't say 'yes'. I just say 'we're discussing it'; we're looking into it in detail."
Hmmm.
http://www.bbc.com/news/science-environment-35435108
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