Roger Druine was a French flying instructor in the 1950s with several aircraft designs already to his credit, including an attractive little single-seater known as the D.31 Turbulent. He realised that there would also be a ready market for a simple-to-construct two seater, which could act as a club aircraft and an economical tourer; the result was the Druine D.5 Turbi.
The Druine D.31 Turbulent is a French single-seat ultralight Homebuilt aircraft designed by Roger Druine.The D.31 Turbulent was designed to be amateur-built and is a single-seat ultra-light aircraft with cantilever
low-wing and fixed tailwheel land..
The Druine D.5 Turbi is a French ultralight Homebuilt aircraft designed by Roger Druine.Plans show open cockpit with dual controls that can be
flown solo from either the front or back seat. Original design was a dual
windshield open cockpit.&..