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| - The Saab 21R was a Swedish twin-boom fighter/attack aircraft developed and produced by Saab. It was a jet-powered development of the earlier piston-engined 21. It was the first jet aircraft to be produced by Saab. Along with the Russian Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from a piston-powered aircraft. During the Second World War, the nation of Sweden, feeling under threat during the expanding conflict, ordered Saab to develop an advanced front-line fighter aircraft. The corresponding aircraft was an unorthodox twin-boom pusher configuration fighter aircraft, featuring a low-mounted wing, a tricycle landing gear arrangement, and was furnished with heavy forward-firing armament. Throughout 1945, several different options were explored with the intention of improving the 21's performance, leading to SAAB working on producing a version of the 21 that would harness jet propulsion. On 10 March 1947, the maiden flight of the 21R occurred. During 1947, at the direction of the Swedish Air Force, SAAB began converting the service's piston-engined J 21s to use jet propulsion instead, which required each aircraft to receive extensive modifications. A production run of 124 aircraft was originally envisaged, including four prototypes, however, the type was instead mainly used as a fighter-aircraft and orders were almost halved to 64 aircraft. As a fighter, its service designation in the Swedish Air Force was J 21R, and saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters that had been designed from the onset to harness jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
- The Saab 21R was a Swedish twin-boom fighter/attack aircraft developed and produced by Saab (styled "SAAB" before 1950). It was a jet-powered development of the earlier piston-engined Saab 21. It was the first jet aircraft to be produced by Saab. Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from a piston-powered aircraft. During the Second World War, the nation of Sweden, feeling under threat during the expanding conflict, ordered Saab to develop an advanced front-line fighter aircraft. The corresponding aircraft was an unorthodox twin-boom pusher configuration fighter aircraft, featuring a low-mounted wing, a tricycle landing gear arrangement, and was furnished with heavy forward-firing armament. Throughout 1945, several different options were explored with the intention of improving the 21's performance, leading to SAAB working on producing a version of the 21 that would harness jet propulsion. On 10 March 1947, the maiden flight of the 21R occurred. During 1947, at the direction of the Swedish Air Force, SAAB began converting the service's piston-engined J 21s to use jet propulsion instead, which required each aircraft to receive extensive modifications. A production run of 124 aircraft was originally envisaged, including four prototypes, however, the type was instead mainly used as a fighter-aircraft and orders were almost halved to 64 aircraft. As a fighter, its service designation in the Swedish Air Force was J 21R, and saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters that had been designed from the onset to harness jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
- The Saab 21R, colloquially called Vampyren was a Swedish twin-boom fighter/attack aircraft developed and produced by Saab (styled "SAAB" before 1950). It was a jet-powered development of the earlier piston-engined Saab 21. It was the first jet aircraft to be produced by Saab. Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from a piston-powered aircraft. During the Second World War, the nation of Sweden, feeling under threat during the expanding conflict, ordered Saab to develop an advanced front-line fighter aircraft. The corresponding aircraft was an unorthodox twin-boom pusher configuration fighter aircraft, featuring a low-mounted wing, a tricycle landing gear arrangement, and was furnished with heavy forward-firing armament. Throughout 1945, several different options were explored with the intention of improving the 21's performance, leading to SAAB working on producing a version of the 21 that would harness jet propulsion. On 10 March 1947, the maiden flight of the 21R occurred. During 1947, at the direction of the Swedish Air Force, SAAB began converting the service's piston-engined J 21s to use jet propulsion instead, which required each aircraft to receive extensive modifications. A production run of 124 aircraft was originally envisaged, including four prototypes, however, the type was instead mainly used as a fighter-aircraft and orders were almost halved to 64 aircraft. As a fighter, its service designation in the Swedish Air Force was J 21R, and saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters that had been designed from the onset to harness jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
- The Saab 21R was a Swedish twin-boom fighter/attack aircraft developed and produced by Saab ("SAAB" before 1950). It was a jet-powered development of the earlier piston-engined Saab 21. It was the first jet aircraft to be produced by Saab. Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from piston-powered aircraft. During the Second World War, Sweden was under threat from the expanding conflict and ordered Saab to develop an advanced front-line fighter aircraft. The resulting aircraft was an unorthodox twin-boom pusher, featuring a low-mounted wing, a tricycle landing gear, and was furnished with heavy forward-firing armament. Several options were explored with the intention of improving the 21's performance, leading to SAAB working on producing a jet-powered version. On 10 March 1947, the first flight of the 21R was made. During 1947, at the direction of the Swedish Air Force, SAAB began converting the service's piston-engined J 21s to use jet propulsion, which required extensive modifications. A production run of 124 aircraft was planned, including four prototypes, however, the type was instead mainly used as a fighter-bomber and orders were almost halved to 64 aircraft. The Swedish Air Force's designation for the fighter was J 21R, and it saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters that had been designed from the onset to harness jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
- The Saab 21R was a Swedish fighter/attack aircraft developed and produced by Saab ("SAAB" before 1950). It was a jet-powered development of the earlier piston-engined Saab 21. It was the first jet aircraft to be produced by Saab. Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from piston-powered aircraft. During the Second World War, Sweden was under threat from the expanding conflict and ordered Saab to develop an advanced front-line fighter aircraft. The resulting aircraft was an unorthodox twin-boom pusher, featuring a low-mounted wing, a tricycle landing gear, and was furnished with heavy forward-firing armament. Several options were explored with the intention of improving the 21's performance, leading to SAAB working on producing a jet-powered version. On 10 March 1947, the first flight of the 21R was made. During 1947, at the direction of the Swedish Air Force, SAAB began converting the service's piston-engined J 21s to use jet propulsion, which required extensive modifications. A production run of 124 aircraft was planned, including four prototypes, however, the type was instead mainly used as a fighter-bomber and orders were almost halved to 64 aircraft. The Swedish Air Force's designation for the fighter was J 21R, and it saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters that had been designed from the onset to harness jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
- The Saab 21R was a Swedish fighter/attack aircraft developed and produced by Saab ("SAAB" before 1950). It was a jet-powered development of the piston-engined Saab 21 and was the first jet aircraft to be produced by Saab. Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from piston-powered aircraft. Sweden was under threat during the Second World War, and ordered Saab to develop an advanced fighter. The result was an unorthodox twin-boom pusher, with a low wing, tricycle landing gear, and a heavy forward-firing armament. Several options were then explored to improve its performance, leading to Sa jet-powered version. During 1947, SAAB began converting the piston-engined J 21s to jet propulsion, which required extensive modifications. 124 aircraft were planned, however this was reduced to 64 and they were instead mainly used as fighter-bombers. It saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters designed from the onset with jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
- The Saab 21R was a Swedish fighter/attack aircraft developed and produced by Saab ("SAAB" before 1950). It was a jet-powered development of the piston-engined Saab 21 and was the first jet aircraft to be produced by Saab. Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from piston-powered aircraft. Sweden was under threat during the Second World War, and ordered Saab to develop an advanced fighter. The result was an unorthodox twin-boom pusher, with a low wing, tricycle landing gear, and a heavy forward-firing armament. Several options were then explored to improve its performance, leading to a jet-powered version. During 1947, SAAB began converting the piston-engined J 21s to jet propulsion, which required extensive modifications. 124 aircraft were planned, however this was reduced to 64 and they were instead mainly used as fighter-bombers. It saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters designed from the onset with jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
- The Saab 21R was a Swedish fighter/attack aircraft developed and produced by Saab ("SAAB" before 1950). It was a jet-powered development of the piston-engined SAAB 21 and was the first jet aircraft to be produced by Saab. Along with the Soviet Yakovlev Yak-15, the 21R was one of only two jet fighters to have been successfully converted from piston-powered aircraft. Sweden was under threat during the Second World War, and ordered SAAB to develop an advanced fighter. The result was an unorthodox twin-boom pusher, with a low wing, tricycle landing gear, and a heavy forward-firing armament. Several options were then explored to improve its performance, leading to a jet-powered version. During 1947, SAAB began converting the piston-engined J 21s to jet propulsion, which required extensive modifications. 124 aircraft were planned, however this was reduced to 64 and they were instead mainly used as fighter-bombers. It saw service in the late 1940s and early 1950s before it was replaced by a new generation of fighters designed from the onset with jet propulsion, such as the de Havilland Vampire and the Saab 29 Tunnan.
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