Report No. 640, The aerodynamic characteristics of full-scale propellers having 2, 3, and 4 blades of Clark Y and R. A. F. 6 Airfoil sections: by Edwin P. Hartman and David Biermann. 23 pages, illustrations, 23 × 29 cms. Washington, Government Printing Office, 1938. Price 10 cents

Zdroj:	In Journal of the Franklin Institute 1939 227(4):580-581
Databáze:	ScienceDirect
Externí odkaz:	Zobrazit plný text záznamu