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Acoustic Stealth or how i get a aircraft quiet
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<blockquote data-quote="Michel Van" data-source="post: 24614" data-attributes="member: 760"><p>there Stealth for Radar </p><p>but how about Acoustic quiet stealth aircraft ?</p><p></p><p>Lockheed had build the YO-3A "Quiet Star" propeller-driven monoplane designed to be as quiet as possible.</p><p>that was in year 1970, now 37 year later Wat can they do ?</p><p></p><p>can US quiet they jet stealth aircraft ?</p><p>or famous "Black Helicopters" how hover quiet in conspiracy internet pages.</p><p></p><p>is it possible to build a quiet helicopter with subsonic rotorblade ? </p><p>or are there other technology ?</p></blockquote><p></p>
[QUOTE="Michel Van, post: 24614, member: 760"] there Stealth for Radar but how about Acoustic quiet stealth aircraft ? Lockheed had build the YO-3A "Quiet Star" propeller-driven monoplane designed to be as quiet as possible. that was in year 1970, now 37 year later Wat can they do ? can US quiet they jet stealth aircraft ? or famous "Black Helicopters" how hover quiet in conspiracy internet pages. is it possible to build a quiet helicopter with subsonic rotorblade ? or are there other technology ? [/QUOTE]
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Name the company which designed the F-117A Stealth Fighter
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