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|family = Falcon |status = Cancelled |sites = Omelek Island |launches = |success = |fail = |partial = |other_outcome = |first = |last = |payloads = O2G |stagedata = }} The Falcon 1e was a proposed upgrade of the SpaceX Falcon 1. The Falcon 1e would have featured a larger first stage with a higher thrust engine, an upgraded second stage engine, a larger payload fairing, and was intended to be partially reusable. Its first launch was planned for mid-2011, but the Falcon 1 and Falcon 1e were withdrawn from the market, with SpaceX citing "limited demand," before its debut.〔 〕〔 〕 Payloads that would have flown on the Falcon 1 were instead to be flown on the Falcon 9 using excess capacity. == Design == The Falcon 1e was to be longer than the Falcon 1, with an overall length of , but with the same diameter. Its first stage had a dry mass of , and was powered by an upgraded〔 pump-fed〔 Merlin 1C engine burning of RP-1 and liquid oxygen. The first stage burn time was around 169 seconds.〔 The second stage had a dry mass of and its pressure-fed〔 Kestrel 2 engine burned of propellant. The restartable Kestrel 2 could burn for up to a total of 418 seconds. The Falcon 1e planned to use Aluminum Lithium alloy 2195 in the second stage, a change from the 2014 Aluminum used in the Falcon 1 second stages.〔 〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Falcon 1e」の詳細全文を読む スポンサード リンク
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