5 4 SectionsScale l=IOOK^ Scale oFBlade Length l = /FootTorque Grading Cun/e … Scale l=WQK^-^Fio. 4S. against r, we obtain the thrust grading curve (fig. 48). Thearea of this curve gives the total thrust contributed by theblade. A study of the curve confirms a remark made formerly,that the portion of the blade between the radii I foot and 2feet is of small aerodynamical…
Airplanes
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