## Technical Memorandum - National Advisory Committee for Aeronautics, Volumes 1001-1010National Advisory Committee for Aeronautics, 1942 - Aeronautics Chiefly translations from foreign aeronautical journals. |

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according aerodynamic affords afterbody altitude anemometer angle angular velocity annular elements approximately axial axis bending boundary layer circuit compressor computed condenser constant corresponding curve cylinder defined diameter displacement thickness drag coefficient duralumin dynamic effect engine equation experimental factor figure flight fluctuations fluid follows forces formula friction drag friction sheet grid Gruschwitz heat hence horsepower ILLINOIS URBANA increase isotropic turbulence kilometers per hour laminar friction layer load losses maximum measurements meters per second method momentum theory momentum thickness NACA obtained parameter plane plate plotted Pohlhausen potential flow power dive pressure distribution pressure drag profile drag propeller propulsion system propulsive efficiency quantity ratio reference resistance coefficients Reynolds number ring rotation separation point shearing stress sin2 cp slipstream speed stagnation point static statically indeterminate surface Technical Memorandum temperature theoretical theory tion trailing edge transition point turbulent friction layer variation wing wire