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The Horten H.XVIII was a proposed German World War II intercontinental bomber, designed by the Horten brothers with pioneering features such as a flying wing configuration, turbojet engines and stealth characteristics. The unbuilt H.XVIII represented, in many respects, a scaled-up version of the Horten Ho 229, a prototype light bomber. The H.XVIII was one of many proposed designs for an ''Amerikabomber'', and would have carried sufficient fuel for transatlantic flights. ==Design== In recent years, software modelling has suggested that the stealth and speed of the Hortens' flying wing jet designs would have made interception, prior to bombing, difficult and unlikely.〔Myhra, 1998. pp. 〕 For instance, modelling suggested that hypothetical Ho 229 raids on England may have been undetectable by radar, until such a bomber was within eight minutes or 80 miles (129 km) of its target.〔 (Brian Handwerk, 2009, '"Hitler's Stealth Fighter" Re-created', ''National Geographic'', p. 2 ) (19 July 2015). 〕 The ability of bomber crews, in an aircraft such as the Horten H.XVIII, to attack targets in North America, may have been hampered by existing and emerging Allied air defence strategies and technologies, such as: * increasing air attacks on German factories and airbases; * intelligence gathering, especially advances in cryptanalysis; * ongoing improvements in radar (especially early warning and airborne radar, and; * high-altitude and/or long-range combat air patrols. 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「Horten H.XVIII」の詳細全文を読む スポンサード リンク
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