The Viggen was initially developed as a replacement for the Saab 32 Lansen in the attack role and later the Saab 35 Draken as a fighter.

for prowling low and fast over Swedish countryside, and above all else, for its

Viggen. At a low altitude, the AJ 37 Viggen was one of the fastest aircraft in the world.

While the plane never achieved

Several variants were produced to perform the roles of all-weather fighter-interceptor, ground attack …
dramatic short field takeoffs and landings.By At the same time, short-field takeoff and landing performance was also required. The Viggen was initially developed as a replacement for the The aim was to produce a robust aircraft with good short-runway performance that could be operated from numerous specially prepared roads and highways to reduce the vulnerability to attack in the event of war.In 1960, the U.S. National Security Council, led by However, Bruzelius' theory has been criticized by Simon Moores and Jerker Widén.The requirements from the Swedish Air Force dictated Mach 2 capability at high altitude and Mach 1 at low altitude.

The Viggen was also the most advanced fighter jet in Europe until the introduction of the Panavia Tornado into operational service in 1981. "Red Baron" and LOROP camera pods were usually carried on the fuselage pylons. Despite The main landing gear, manufactured by Motala Verkstad, each leg held two small wheels fitted with anti-skid brakes placed in a tandem arrangement.During development, Saab had opted to power the type using a single large turbofan engine.

The basic platform was the AJ-37 strike fighter, to be followed by SF-37 aerial reconnaissance versions and the all-weather fighter-interceptor JA-37. The jet was unique, its delta-canard configuration was cutting-edge, and its ability to operate in austere conditions made it quite independent compared to most other western fighters of the era. fighters.The avionics supported many different bombing modes for the general purpose bombs. The centerline fuel tank was converted for a short period of time to a camera pod with two Recon/Optical CA-200 1676 mm cameras.

A digital central computer and a head-up display replaced the human navigator.

Originally, the British Rolls-Royce Medway engine had been selected to power the Viggen, but eventually Saab chose to adopt a licence-production version of the American Pratt & Whitney JT8D engine, the Volvo RM8B, instead. system and an electronic flight control system, the first of its kind in a Swedish aircraft served not only in the Swedish Air Force, but also in the Austrian, Danish, and Finnish Air Forces. The aircraft has been preserved and is on display outside a museum in Linköping.A total of 110 original, ground-attack optimized variant, A two-seat trainer was not initially planned since it was considered that new pilots could get enough experience with delta-winged aircraft on the The Viggen saw initial service in natural metal, later receiving an extremely elaborate disruptive camouflage scheme for the AJ/SF/SH/SK variants and the first 27 JA aircraft. The main wings are low-mounted, delta-shaped, extending from the body midsection to the exhaust.

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The SF could carry With the introduction of the JA 37 in 1979 came the Ericsson PS 46/A radar capable of guiding the two The centerline pylon was almost exclusively carried a semi-permanent fuel tank, which was jettisonable in the event of a dogfight. the mid-1980s, Swedish Viggen fighter pilots, using the predictable patterns of

The Saab 37 Viggen (English: Thunderbolt) was a Swedish single-seat, single-engine, short-medium range fighter and attack aircraft, manufactured between 1970 and 1990.
On a typical attack run, the Viggen would move to its target fast and low.

The pylons behind the landing gear were not used until the JA 37D modification when BOL countermeasure dispensers were fitted to them.The Saab packed pretty exciting technology for its time, There is a bubble canopy and a small belly fin. It was the first canard design produced in quantity. This Viggen was built in 1977 and served all its active duty in F 15 Wing at Söderhamn.

A derivative of the There were dedicated warning caption panels each side of the pilot's legs.

The SH 37 maritime strike and reconnaissance variant was very similar to the AJ 37 and differed mainly in a maritime optimized PS 371/A radar with longer range and cockpit camera and tape recorder for mission analysis. The first prototypes had a straight midsection fuselage that was later improved with a "hump" on the dorsal spine for reduced drag according to the area rule.A consequence of a tailless delta design, such as in the Viggen, is that the elevons, which replace more conventional control surfaces, operate with a small effective moment arm; their use adds substantial weight to the aircraft at takeoff and landing. The powerful engine gave it the capability to go supersonic at low levels.

Several different concepts were studied involving both single- and twin engines and also with separate lift engines, both simple and double delta wings and also with canard wings. With this powerful engine, Saab’s aircraft can accommodate flight at Mach-2.1 maximum speed, operating range 2,000km, Service ceiling at 18,000m, Rate of climb 203m/s.Earlier version of the Viggen did not have an internal cannon, as it was considered by the days a close-range combat was not necessary, an approach that also affected other designs, such as the American Phantom F4.