Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 757
8303. L^gjLk iiJjiifj,..r.7B. … method of laying out a propeller with radially-expanding pitch—i. e., with pitch varying continuallyfrom the hub to the periphery of the blade. We have given in this case the diameter of the pro-peller, the form and dimensions of the hub, the space in which the propeller must revolve, the pitchat…
Mechanical engineering -- Dictionaries
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