Tests of the N.P.L. airship models in the variable density wind tunnel (1927)
NASA Technical Reports Server (NTRS) · leaf 51
NACA TN No. 1642 50 … Peroent chord (d) Ratio of chord of airfoil to height of tunnel c/h> 2.0. ' Figure 4. - Concluded. Local constriction corrections for 12-percent-thiok airfoil.
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.
