Word: propellors
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Dates: during 1910-1919
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This type of machine would be independent of horizontal flying speed to create pressure under its wings and would be able to land and to start from the roofs of buildings in the heart of a city. This implies the necessity of a motor strong enough to swing a propellor which would lift the machine by sheer strength without the help of the wings. It is in fact the application of the principle laid down by Orville Wright that a kitchen table could fly with sufficient engine power...
...Hoboken, N. J., consists of a small 12-volt electric motor operated by a storage battery connected through a geared reduction to a Bijur automatic screw drive. On the end of the screw shaft is cut an 8-tooth pinion which meshes with a larger gear on the propellor shaft. The starter will turn over the engine at 40 to 50 r.p.m. with a consumption of 100 to 110 amperes and a maximum of 1300 foot-pounds is available on the engine crank shaft, for breaking loose a cold engine. When the engine begins firing the screw drive automatically demeshes...
...Aeronautical Society held its first meet of the year at Concord Saturday afternoon. The contest was open to all preparatory schools as well as colleges. There were seventeen entries of various types of model aeroplanes, the majority being of the A-frame, double propellor type. This style of machine, entered by J. L. Smith, of Medford High School, and piloted by F. T. Bates, of Massachusetts Institute of Technology, won first place by traveling a quarter of a mile, and was awarded the silver medal. E. H. Bean '17 took second prize by flying his machine 900 feet...
...Aeronautical Society's aeroplane "Harvard I" is nearing completion. The framework is almost ready for the cloth, and the engine and propellor are in the hands of the society ready for installation after preliminary tests in Pierce Hall...
...supporting surface of 200 square feet. The controlling elevators are the feature of the machine, and present 35 square feet of surface. The workmanship throughout is of spruce, hollowed for lightness and laminated for strength. The weight of the framework is about 150 pounds, and of the engine and propellor 200 pounds, making the total weight of machine and operator about 525 pounds, the lightest biplane ever built. The engine is four-cylinder, air-cooled, and will develop 30 horsepower...