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Adeline (''Ad''vanced ''E''xpendable ''L''auncher with ''In''novative engine ''E''conomy) is a reusable rocket first-stage engine and avionics package concept by Airbus Defence and Space that will have a booster's main engines fly themselves back to Earth after a launch using drone technology. They would then be refurbished and be reused on another flight. The design may be used in future evolution of Ariane 6, however the concept is compatible with any liquid-fuel rocket. The project engineers believe it could recover 20-30% of the cost of a flight at a added weight penalty cost of perhaps 10%. After the stage is exhausted, the engine module is jettisoned for reentry. At a certain point in the descent, Adeline would pull up using its small winglets and steer itself towards a runway whilst gliding. As it approaches the runway, landing gear and two small pusher configuration propellers would be deployed to perform a powered horizontal landing. The concept would allow for reusing 80% of the stage's economic value: the engine, avionics and propulsion bay.〔 The engines could be re-flown about 10 to 20 times.〔 The approach has several advantages over the SpaceX technology under development,〔 specifically it avoids the high stresses their booster engines experience during deceleration for a vertical landing and for a geostationary flight it would only require around 2,000kg of fuel to return safely to the ground against an estimated 35,000kg for SpaceX. Airbus started this program in 2010 and has invested about by May 2015 on the reusable technology programme; scale models have been flown.〔 Ariane 6 is currently a development priority for Airbus Defence and Space, Adeline comes afterwards.〔 ==See also== * Ariane (rocket family) * Comparison of orbital launchers families * Reusable launch system 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「Adeline (rocket)」の詳細全文を読む スポンサード リンク
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