Tests of Nacelle-Propeller Combinations in Various Positions with Reference to Wings IV : Thick Wing - Various Radial-Engine Cowlings - Tandem Propellers (1935)
NASA Technical Reports Server (NTRS) · leaf 16
15 THICK WING—VARIOUS RADIAL-ENGINE COWLINGS—TANDEM PROPELLERS These formulas are applied to two conditions: One peller effects considered separately. The detailed V discussion of the method given in reference 1 and used for high speed and cruising with a propeller ^2)^ 0.65 in the previous reports… … cs Figure 19— Variation of 17 and V/nD with Ca for typical position above wing. Tandem position 2-A. Angle of attack, 0°. Large nacelle with N.A.C.A. hood front, ring 5° rear. Blade angle of propeller at 0.75 R. Net efficiency=propulsive efficiency—nacelle drag efficiency factor=g- ^ - ^ °W ^ Qff…
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