N-7?Northrop N-6 ?
I'd agree. Looks like a spin or free-flight model from Langley (LMAL).NACA?
Are you positive?Material Control Department Project MCD 387A dated 12 july 1943.
No specific aircraft manufacturer.
"Retromechanix" issued several documents on the subject
Quite positiveAre you positive?
Model #58 was tested at NACA's 12-Ft. Low Speed Tunnel (Facility #644) in 1945; six photos exist, all dated 1945 (LMAL 45249/45254) as well as four publicity photos issued in 1946 (LMAL 46746,46900/46902).
Thanks!Quite positive
1943 is the date on the model's blueprints, not the one for the wind tunnel tests.