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Propeller Tests to Determine the Effect of Number of Blades at Two Typical SoliditiesPropellers 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.
Document ID
19930081563
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Lesley, E P (Daniel Guggenheim Aero. Lab., Stanford University)
Date Acquired
September 6, 2013
Publication Date
April 1, 1939
Report/Patent Number
NACA-TN-698
Accession Number
93R10853
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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