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Luttrell 1909 biplane

Samuel Luttrell, a local automobile enthusiast of Rockville, Maryland (or Washington DC), built this tailless tractor biplane in 1909. He tested it with a 50-horsepower engine, driving the four-bladed canvas propeller at about 650 revolutions per minute. The propeller was set on a universal joint and intended to control the vertical and lateral movement of the machine. The strong engine crumpled up the flimsy-looking propeller on the first test, after which a 30 horsepower unit was installed.
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