Golden Age Test Propellers
Presented are four unusual propellers of the Golden Age of Aviation. From left is the hinged-blade research propeller by Paragon Engineering, designed for the U.S. Navy but not adopted; the Micarta controllable pitch propeller designed to be spun from a Wright-built 180-hp Hispano-Suiza engine, 1922; the Olmstead high-efficiency propeller for the Loening M-2 (an aircraft that never saw production); and the Curtiss Reed propeller molded in aluminum alloy for the necessary pitch for the Liberty 12 and Curtiss D-12 engines. All four examples were flight tested at McCook Field.
Golden Age Test Propellers
Presented are four unusual propellers of the Golden Age of Aviation. From left is the hinged-blade research propeller by Paragon Engineering, designed for the U.S. Navy but not adopted; the Micarta controllable pitch propeller designed to be spun from a Wright-built 180-hp Hispano-Suiza engine, 1922; the Olmstead high-efficiency propeller for the Loening M-2 (an aircraft that never saw production); and the Curtiss Reed propeller molded in aluminum alloy for the necessary pitch for the Liberty 12 and Curtiss D-12 engines. All four examples were flight tested at McCook Field.