Saab 37 Viggen is one of Swedish multirole aircraft developed for some multipurpose variants as striker fighter, aerial reconnaissance, maritime patrol aircraft, a two seat trainer, and all weather fighter interceptor aircraft. It was firstly introduced in 1971 and flown in 1967 where it was initially improved to replace the Saab 32 Lansen in attach role and Saab 35 Draken as a fighter. Viggen was planned as an integrated weapon system which can be operated in conjunction with the newest development from Sweden’s national electronic air defense system. Besides, it was aimed at to be able to perform all tactical mission roles included supersonic ability at low level and making short landing at low angles of attack.
Saab 37 Viggen employed a single engine of VolvoFlygmotor RM8B afterburning turbofan which built from JT8D Pratt and Whitney variant. Then, it was designed by radical configuration with low conventional delta and canard wings. It was also completed by four elevon actuator to increase the maneuverability. Viggen utilized Ericsson PS 46 X Band with multimode skill and could reach 48 KM for air and surface attack. It was also employed Decca type 72 Doppler navigation radar.
In the cockpit, it was equipped by traditional analogue or mechanical type using head-up display and claimed to make Viggen better and easier to fly. But, for the Viggen with striker variant, it employed cathode ray tube display screen which could be used to display the processed radar information, computer generated maps, and flight and weapons data. At that time, Viggen was priced about US$2 million per unit with total production about more than 300 units built. Viggen was so long to be used in Swedish Air force, but it needed to be retired and replaced by Grippen. Thus, Sweden government decided to retire Viggen in 2005 and officially replaced by Grippen in 2006.
|Country of origin||Sweden|
|Wing span||10,6 m|
|Weight (Empty)||15 t|
|Engines||1 x Volvo Flygmotor turbofan|
|Maximum speed||2.126 km/h|
|Cannon||1 x 20 mm Oerlikon KCA cannon|
|Missiles||Up to 6 x Rb 71 (skyflas) or Rb 99 (AIM 120 AMRAAM) and Rb 24J (AIM 9J) or Rb 74 (AIM 9L) air to air missiles.|
|Bombs||M70 135 mm rockets|