Inside Out Library · ExploreFull Scale Tests on a Thin Metal Propeller at Various Tip Speeds (1929)NASA Technical Reports Server (NTRS) · leaf 76 REPORT NATIONAL ADVISORY COMMITTEE FOR AERONAUTICSNASA Technical Reports Server (NTRS)Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.More pictures from Full Scale Tests on a Thin Metal Propeller at Various Tip SpeedsMore like this
