In the First Russian Soaring Flight Competition at Feodosia Crimea in 1923, a very light allwing sailplane took part. The parabola plan shape of its wing, its small span and low aspect ratio raised general interest. The designer and pilot of this Flying Wing was the Russian student of aeronautical engineering, B. J. Tscheranowsky.
Aircraft Engineering and Aerospace Technology – Emerald Publishing
Published: Jan 1, 1945