Aerodynamically clear F-28 has radically rigid-in-line three-blade rotor with elastometric bearings in the hub. Power goes from engine to main-rotor gearbox via a belt drive with controlled idler. Priced at under $30,000. Part of a system the French are testing is the Flarescan antenna, which scans the sky 10 times per second. These vertical swoops produce microwave beams that are encoded with angle data code. This code, encased on antenna framework, depicts instantaneous elevation ...


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