The aviation pocket-book for 1918; a compendium of modern practice and a collection of useful notes, formulae, rules, tables and data relating to aeronautics (1918)
Matthews, Richard Borlase, 1878- · London : C. Lockwood and son · leaf 246
17 25-5 34 Radius (OC) A Characteristic Efficiency Curve. Div. IV EFFICIENCY AT VARIOUS SPEEDS 105 For a propeller having average blade sections this reaches amaximum when A is in the neighbourhood of 42. An examinationof characteristic curves of the efficiencies of elements plotted againstradii… … The above figure shows the limitation that construction placesupon blade widths at varying radii. B is the greatest permissibledepth of boss, then the width of the blade 6--B (cos A + a). In considering interference, the blades of the airscrew may beconsidered as similar to the planes of a…
Aeronautics
Internet Archive · California Digital Library · Public Domain Mark 1.0. Free to use for anything.
