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Yehudi lights are lamps of automatically controlled brightness placed on the front and leading edges 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 designed to camouflage the aircraft by preventing it from appearing as a dark object against the sky. Yehudi lights were unused in the war and were made obsolete by advanced postwar radar. With 1970s improvements in stealth technology, they again attracted interest.

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  • أضواء يهودي (ar)
  • Éclairage Yehudi (fr)
  • Luci Yehudi (it)
  • ユーディの光 (ja)
  • Yehudi lights (en)
rdfs:comment
  • ユーディの光(ユーディのひかり、Yehudi lights)は機体の下部を照明によって照らし出して明るくし、地上や海上から空中の航空機を見た場合に背景となる空と同じ明るさにして、光学的なステルス性を得るという方法。 (ja)
  • أضواء يهودي (بالإنجليزية: Yehudi lights)‏ هو شكل من التمويه النشط باستخدام الإضاءة العكسية (بالإنجليزية: Counter-illumination)‏ وذلك بوضع مصابيح إضاءة على الجانب السفلي أو على حافة جناح الأمامي للطائرة لرفع استضوائها لمعدل سطوع السماء. هدف هذه الأضواء هو حجب الطائرة عن الظهور كنقطة سوداء في السماء. (ar)
  • L'éclairage Yehudi est une technique de camouflage militaire développée par la Marine américaine dans les années 1940. Il consiste en une série de lampes placées sur le côté inférieur ou le bord d'attaque de l'aile d'un avion afin d'augmenter la luminosité de l'appareil pour qu'elle corresponde à celle du ciel. De cette manière, l'aéronef n'apparait plus comme un objet sombre dans un ciel et est donc plus difficile à repérer. (fr)
  • Yehudi lights are lamps of automatically controlled brightness placed on the front and leading edges 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 designed to camouflage the aircraft by preventing it from appearing as a dark object against the sky. Yehudi lights were unused in the war and were made obsolete by advanced postwar radar. With 1970s improvements in stealth technology, they again attracted interest. (en)
  • Le luci Yehudi sono state un progetto di camuffamento attraverso controilluminazione, consistente in una serie di lampade disposta sulla sagoma di un aereo in modo da confonderne il profilo agli occhi di osservatori posti a terra o su navi. Il progetto fu iniziato con alcuni studi condotti dalla Royal Canadian Navy durante la seconda guerra mondiale, poi rilanciati nel 1943 dagli statunitensi con sperimentazioni sul Grumman TBF Avenger e sul Consolidated B-24 Liberator, nonché su una bomba planante della US Navy. Altre sperimentazioni furono portate avanti dalla Royal Navy inglese su navi e aerei. (it)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Principle_of_Yehudi_Lights_with_Avenger_head-on_view.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Squid_Counterillumination.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/B-24J-55-CO_(cropped).jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Consolidated_PBY-5A_Catalina_(cropped).jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/DARPA_USAirForce_HaveBlue.png
  • http://commons.wikimedia.org/wiki/Special:FilePath/Yehudi_Lights_Flight_Path_in_Crosswind.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Yehudi_Lights_Plan_for_B-24_Liberator.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Yehudi_Lights_Plywood_Prototype.jpg
  • http://commons.wikimedia.org/wiki/Special:FilePath/Yehudi_Lights_on_Grumman_TBM-3D_Avenger.jpg
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