Free Spinning Wind-tunnel Tests of a Low-wing Monoplane with Systematic Wings and Tails (1937)
NASA Technical Reports Server (NTRS) · leaf 17
(a) (1) Rectangular wing with Aray tips, (2) Rectangular wing with interchangeable rectangular and (3) 5:2 tapered wing with Army tips. faired tips, (4) 2:1 Arrr\y standard tapered wing with square center. en Figure 5,- Interchangeable wings and tails of low-wing monoplane model.
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.