Wind-Tunnel Tests of Single- and Dual-Rotating Tractor Propellers of Large Blade Width Open PDF Document Details Document Type Technical Report Publication Date Sep 01, 1942 Accession Number ADA800958 Entities Organizations Langley Research Center Tags Communities of Interest Air Platforms DTIC Thesaurus Topics Aeronautical Laboratories Aeronautics Aircrafts Airplanes Blades Coefficients Diameters Efficiency Electric Motors Propeller Blades Propellers Reynolds Number Rotation Standards Test Sets Wind Tunnel Tests Wind Tunnels