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Yehudi lights : ウィキペディア英語版 | Yehudi lights
Yehudi lights are lamps placed on the underside or wing leading edge of an aircraft to raise the aircraft's luminance to the average brightness of the sky, a form of active camouflage using counter-illumination. They were intended to disguise the aircraft by preventing it from appearing as a dark object against the sky. The technology was developed by the US Navy from 1943 onwards, based on earlier research by the Canadian Navy in its "diffused lighting camouflage" project. It did not come into operational usage and was considered obsolete with postwar advances in radar. With more recent improvements in stealth technology, Yehudi lights have again attracted interest. ==Canadian origins==
The use of Yehudi lights to camouflage aircraft by matching their luminance with the background sky was developed, in part, by the US Navy's Project Yehudi from 1943 onwards, following pioneering experiments in the Canadian "diffused lighting camouflage" project for ships early in the Second World War. The ships were fitted with ordinary projectors mounted on small platforms fixed to their sides, with the projectors pointing inwards at the ship's side. The brightness was adjusted to match the brightness of the sky. The Canadian experiment showed that such counter-illumination camouflage was possible, but the equipment was cumbersome and fragile, and the Canadian Navy did not take it further, despite interest from their allies.
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「Yehudi lights」の詳細全文を読む
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