"Villiers 24" slotted-wing airplane (French)
This is a 1928 NACA aircraft circular, issued by NASA's Technical Reports Server, documenting the Villiers 24 C.A.N.2 night pursuit airplane with slotted wings. The pictures are plain line drawings and engraved sketches: three-view and front elevation diagrams, a side profile, wing-slot cross-sections, and structural close-ups of struts and fittings, useful for a designer seeking mechanical diagram linework and technical illustration layouts.
