The air flow and the air force created by all elements of the propeller blades lying in a ring located between two concentric circles around the propeller axis are independent of what happens in other rings.
Notes on propeller design III
01.05.1922
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Englisch
NTRS | 1922
|Notes on propeller theory and design
Engineering Index Backfile | 1920
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Engineering Index Backfile | 1965
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