[Radoye]

Nikitin-Shevchenko IS-1 folding wing fighter, USSR



This was the progenitor of series of prototypes (IS-2, IS-4, IS-18) which all had in common that they could fold their lower pair of wings and thus change from biplane configuration (for takeoff, landing, and improved climb and turn performance) into a shoulder-wing monoplane (for speed).

Data:
http://www.airwar.ru/enc_e/fww2/is1.html

Data & 3-view:
http://www.aviastar.org/air/russia/nikitin_is-1.php
http://ram-home.com/ram-old/is-1.html

color profile:
http://wp.scn.ru/en/ww2/s/1250/1/0

Data and photo (russian):
http://www.airwar.ru/enc/fww2/is1.html