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Date: 2006-07-14 16:17:03Helicopter Military helicopters Tail rotor Hughes OH-6 Cayuse Vortex ring state Autorotation Bell UH-1 Iroquois Coaxial rotors Proxflyer Rotorcraft Aircraft Aviation | Add to Reading ListSource URL: www.ibiblio.orgDownload Document from Source WebsiteFile Size: 332,09 KBShare Document on Facebook |