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    Propeller Tests to Determine the Effect of Number of Blades at Two Typical Solidities (1939)
    In:  CASI
    Details
    Publication Date: 2019-06-28
    Description: Propellers with equal total blade area, but with different numbers, were tested at Stanford University. The tests show generally that, for equal total blade area, propellers with the larger number of blades absorb the greater power and, provided hubs have equal drag, develop the higher efficiency. It is shown that the differences found are in agreement, qualitatively, with what might be predicted from simple blade-element theory.
    Type: NACA-TN-698
    Format: application/pdf
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