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Kirsten-boeing Propeller (1926)
NASA Technical Reports Server (NTRS) · leaf 10
N.A.C.A. Techr.icu Memorandum No. 351 Figs.3,4,0,0,7 & 8 Fig.4. Propeller running(Thruat- aeo-auring device). Fig.3. Propeller on testing atand. Fig.5. Fig.5. Propeller rim. Enlarged view, showing structure Fig.8. Plades, showing structure, Fig.7. Hub.NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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