United States. National Advisory Committee for Aeronautics, United States. National Aeronautics and Space Administration · Washington : G.P.O. · leaf 70
inecessary to use the -—^—r- ratio as a means of interpreting the results; and the larger number of tests were made, not in terms of power, but in terms of a performance factor dependent on the effectivepitch of the propeller blades. A given set of tests, all made with the same fan, were then… … FIG. 1—VIEW OF THE FLOW TAKEN FROM ABOVE THE MODEL.
Aeronautics
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
