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| satellite_of = | orbital_insertion_date = | orbits = | decay = | launch = 2015 | launch_vehicle = | carrier_rocket = | launch_site = | mission_duration = | NSSDC_ID = | webpage = (Don Quijote concept ) | mass = | power = | batteries = | orbit_regime = | refs = }} Don Quijote is a past space probe concept that has been studied by the European Space Agency, and which would investigate the effects of crashing a spacecraft into an asteroid. The mission was intended to test whether a spacecraft could successfully deflect an asteroid on a collision course with Earth. The orbiter was designed to last for seven years. The mission did not proceed beyond initial studies, currently ESA is working on Asteroid Impact & Deflection Assessment mission as a part of its NEO space mission studies.〔(【引用サイトリンク】title=Past studies: Don Quijote )〕 ==Overview== The mission would consist of two spacecraft that will execute a series of maneuvers around a small, 500-metre (1,600-foot) asteroid.〔 *The first spacecraft, Sancho, will arrive at the asteroid and orbit it for several months, studying it. The orbiter will use a single xenon ion engine. *After a few months, the second spacecraft, Hidalgo, will hurtle toward the asteroid on a collision course. It will sleep for most of the trip and then steer itself using optical sensors with an accuracy of 50 meters. Sancho will retreat to a safe distance while Hidalgo will hit the asteroid at around 10 km/s. *Sancho will then return to its close orbit and see how much the asteroid's shape, internal structure, orbit and rotation have been affected by the impact.〔 *Sancho will release the Autonomous Surface Package, a Lander which will free-fall toward the asteroid for 2 hours before landing. This package will be directed towards the interior of the impact crater where it will investigate properties of the surface. Don Quijote was one of six Near Earth Object precursor studies funded by ESA's General Studies Programme, other missions being: EUNEOS (European NEO Survey), Earthguard-I, NERO (NEO Remote Observations), SIMONE (Smallsat Intercept Missions to Objects Near Earth) and ISHTAR (Internal Structure High-resolution Tomography by Asteroid Rendezvous). 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「Don Quijote (spacecraft)」の詳細全文を読む スポンサード リンク
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