Saab 21R
The Saab 21R was a Swedish fighter aircraft with jet propulsion, which was placed at the end of the 1940s in service. It was based on the Saab 21, a twin-hull hunter with a pusher propeller. To the short term to be able to implement the new jet propulsion concept, four Saab 21A -1 were first modified so that an engine De Havilland Goblin 3 could be installed. In addition to the revised air inlet the elevator had to be moved so that it was not directly in the area of the shear beam. The Saab 21R was similar in structure to the British De Havilland Vampire fighter aircraft.
On March 10, 1947, the first flight took place. The Swedish Air Force ordered 120 aircraft initially. 30 machines were of the type 21RA; they received the Goblin -3 engine of De Havilland. Another 30 aircraft of the type 21Rb received an SFA - engine, which was a licensed version of the Goblin -3 engine.
The machines were delivered to the F-10 squadron to Ängelholm. It soon became apparent that due to the lack of a pressurized cabin use as a fighter was only very limited. Then the order was reduced to 60 machines and all machines delivered to the F 7 in Såtenäs and deployed starting in 1949 as a ground attack aircraft. The new designation was A21R.
The Saab 21R was in use until 1957. A number of machines used at the end of their period of service as a training aircraft.
A plane can still be seen at the Aviation Museum of Linköping today.