The Saab 21R was a Swedish twin-boom fighter/attack aircraft made by Saab. It was a jet-powered development of the piston-engined Saab 21 which along with the Russian Yakovlev Yak-15 was one of the only two jet fighters successfully converted from a piston-powered aircraft to enter production.As a fighter its service designation in the Swedish Air Force was J 21R and saw service in the late 1940s.
This page contains content from the copyrighted Wikipedia article "Saab 21R"; that content is used under the GNU Free Documentation License (GFDL). You may redistribute it, verbatim or modified, providing that you comply with the terms of the GFDL.