filper research

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    FS2004 FILPER BETA 200.zip 2024-05-01

    FS2004 FILPER BETA 200 ====================== In 1960 the American company "Filper Research" managed by William Orr built an unusual helicopter. It was equipped with "Gyro Flex" system of rotors. The novelty was in using special sinkers for rotors trimming supported at the base of the blades...
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