The aircraft was also equipped with reverse thrust to reduce the landing distance. Viggen was also the first aircraft in Europe in which the navigator was replaced with a central computer that integrated the advanced electronics system.
The maiden flight was conducted on 8 February 1967 by Erik Dahlström and the first aircraft, an AJ 37, was delivered to the Swedish Air Force in 1971. Five versions of Viggen were developed , AJ 37 (attack and fighter aircraft), SK 37 (training and jamming aircraft), SH 37 (maritime surveillance), SF 37 (photographic surveillance) and JA 37 (fighter and attack aircraft). The JA 37, which was effectively a new aircraft, was for many years considered to be Europe's most effective fighter.
The final Viggen, a JA37, was delivered on 29 June 1990, by which time 337Saab 37 Viggen aircraft had been produced. In the autumn of 2005, the Saab 37 Viggen was retired from active service in the Swedish Air Force, 38 years after making its first flight. The aircraft is on display at museums in Sweden and abroad.
Data and performance
Engine: SFA RM 8B, 12 750 hp with afterburner
Max. take-off weight: 18,800 kg
Max. speed: Mach 2
Max. altitude: 15,000 m