THE increase in aeroplane speed, brought about by improved aerodynamic design and higher engine powers, together with the design restriction on airscrew tip speed resulting from efficiency considerations, has reacted on the airscrew performance during take‐off, and has made the take‐off more difficult.
Perring, W.G.A. (1939), "Recent Airscrew Research: An Account of Experimental Work Carried Out in the R.A.E. 24‐ft. Wind‐Tunnel", Aircraft Engineering and Aerospace Technology, Vol. 11 No. 2, pp. 47-54. https://doi.org/10.1108/eb030436
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