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Model Tests on the Economy and Effectiveness of Helicopter Propellers
| Author: | Munk, Max M. |
|---|---|
| Year: | 1925 |
| Document Type: | N/A |
| Series: | NACA Technical Notes |
| Report Number: | NACA-TN-221 |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc53921/ |
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