This rare very possibly one of a kind pamphlet has no date but appears to be from around 1950. This 59 page mimeographed pamphlets contents include: Measurements and Definitions, Speed and Economy, Relation of Losses, Effect of Shaft Slant, Derivation of the Slip Formula, A Consideration of Principles, Tests of Cutting Blades, Cutting Value of Actual Propeller, Deduction of Paper Test, Using the Paper Test. A very interesting and collectible piece of science ephemera.
Posted on: Sun, 27 Oct 2013 13:52:23 +0000
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