Measurement of Profile Drag on an Airplane in Flight by the Momentum Method. Part I (1930)
NASA Technical Reports Server (NTRS) · leaf 53
Figs.15,16,17, N.A.C.A. Technical Memorandum No.557 Fig.16 Plywood covering II with fabric, loose and slight* ly undulating on upper surfaoe . Fig.17 Plywood covering II with fabric, loose and slight ly undulating on upper surface. ?.S iOO/C
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