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Comparative Flight Performance with an NACA Roots Supercharger and a Turbocentrifugal Supercharger (1931)
NASA Technical Reports Server (NTRS) · leaf 5
REPORT NATIOISTAL ADVISORY COMMITTEE FOR AERONAUTICS —Turbosuperchaiger installation in modified DH-4M2 airplane Figure 2NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
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