The 5- by 7-meter Wind Tunnel of the DVL
A 1936 NASA Technical Reports Server scan of a German aeronautical technical memorandum, N.A.C.A. Technical Memorandum No. 786, describing the 5- by 7-meter wind tunnel of the DVL research institute for aircraft engineers and researchers. Its pictures are plain engineering drawings, black-and-white photographs and a graph of dynamic pressure across the jet, showing tunnel layout, fan and guide vanes, and test rooms; a designer might borrow the clean diagrammatic style of its plans and the dense industrial interiors.
