QUESTION for everyone
PPRuNe Enigma
Joined: Feb 2001
Posts: 427
Likes: 0
From: Scotland
Joined: Mar 2000
Posts: 8,571
Likes: 3
From: Arizona USA
The NACA did stacks of wind-tunnel testing in the 30's and 40's regarding various airfoil sections and this information has been in publication for MANY years. For example, the B747 airfoil section was known from about 1944. Probably much longer than many on this forum have been around......




