The story of the Saab 35 Draken and the Saab 37 Viggen.
the Saab 35 Draken is a Swedish fighter interceptor developed and manufactured by Svenska Aeroplan Aktiebolaget (SAAB) between 1955 and 1974. Development of the Saab 35 Draken started in 1948 as the Swedish air force's future replacement for the then also in developed Saab 29 Tunnan day fighter and Saab 32B Lansen night fighter. It featured an innovative but unproven double delta wing, which led to the creation of a sub-scale test aircraft, the Saab 210, which was produced and flown to test this previously-unexplored aerodynamic feature. The full-scale production version entered service with frontline squadrons of the Swedish Air Force on 8 March 1960. It received the designation Flygplan 35 (Fpl 35; 'Aeroplane 35') and was produced in several variants and types, most commonly as a fighter type with the prefix J (J 35), standing for Jaktflygplan (Pursuit-aircraft), the Swedish term for fighter aircraft.
SAAB 37 VIGGEN
The Saab 37 Viggen (Swedish for "the Bolt" or "the Tufted Duck" (see name)Nb 1 is a retired Swedish single-seat, single-engine, short-medium range multirole combat aircraft. Development work on the type was initiated at Saab in 1952 and, following the selection of a radical delta wing configuration, the resulting aircraft performed its first flight on 8 February 1967 and entered service on 21 June 1971. It was the first canard design produced in quantity and arguably the most modern/advanced combat aircraft in Europe at the time of introduction, featuring an airborne digital central computer with integrated circuits for its avionics, the world's first of its kind, automating and taking over tasks previously requiring a navigator/copilot, facilitating handling in tactical situations where, among other things, high speeds and short decision times determined whether attacks would be successful or not, a system not surpassed until the introduction of the Panavia Tornado into operational service in 1981.
Saab 35 Draken General characteristics
Crew: 1
Length: 15.35 m (50 ft 4 in)
Wingspan: 9.42 m (30 ft 11 in)
Height: 3.89 m (12 ft 9 in)
Wing area: 49.2 m2 (530 sq ft)
Airfoil: 5%
Empty weight: 7,865 kg (17,339 lb)
Gross weight: 11,000 kg (24,251 lb)
Max takeoff weight: 11,914 kg (26,266 lb)
Powerplant: 1 × Svenska Flygmotor RM6C afterburning turbojet engine, 56.5 kN (12,700 lbf) thrust dry, 78.4 kN (17,600 lbf) with afterburner
Performance
Maximum speed: 2,450 km/h (1,520 mph, 1,320 kn) at 11,000 m (36,089 ft)
Maximum speed: Mach 2.3
Ferry range: 2,750 km (1,710 mi, 1,480 nmi) with external drop tanks
Service ceiling: 20,000 m (66,000 ft)
Rate of climb: 199 m/s (39,200 ft/min)
Wing loading: 231.6 kg/m2 (47.4 lb/sq ft)
Thrust/weight: 0.7
Takeoff roll: 800 m (2,625 ft)
Armament
Guns: 1× or 2× 30 mm akan m/55 ADEN cannon with 100 rounds per gun (in Saab 35F one cannon was omitted (with 120 rounds) to fit avionics needed for Falcon missile integration,[28] earlier variants and export variants retained twin guns.)
Hardpoints: six for ordnance, or drop tanks on the bottom two hardpoints, with a capacity of 2,900 kg (6,393 lb), with provisions to carry combinations of:
Rockets: 2× 75 mm air-to-ground rocket pods ventrally or 12× 135 mm rockets on six underwing pylons
Missiles: RB 24, RB 27 and RB 28 air-to-air missiles
Bombs: The Danish export version, (F-35), was modified according to NATO standards and was fitted with 1,000lb bomb hardpoints
Saab 37 Viggen General characteristics
General characteristics
Crew: 1
Length: 16.4 m (53 ft 10 in)
Wingspan: 10.6 m (34 ft 9 in)
Height: 5.9 m (19 ft 4 in)
Wing area: 46 m2 (500 sq ft)
Empty weight: 9,500 kg (20,944 lb)
Gross weight: 16,439 kg (36,242 lb) (AJ37 17,000 kg (37,479 lb)
Max takeoff weight: 19,274 kg (42,492 lb)
Powerplant: 1 × Volvo RM8B afterburning turbofan, 72.1 kN (16,200 lbf) thrust dry, 125 kN (28,000 lbf) with afterburner
Performance
Maximum speed: 2,231 km/h (1,386 mph, 1,205 kn) at 36,100 ft (11,003 m)
Maximum speed: Mach 2.1
Ferry range: 1,820 km (1,130 mi, 980 nmi) internal fuel only
Service ceiling: 18,000 m (59,000 ft)
Rate of climb: 203 m/s (40,000 ft/min)
Armament
Guns: 1 × 30 mm Oerlikon KCA cannon with 125 rounds
Hardpoints: 9 (three hardpoints under fuselage and three under each wing) with a capacity of 7,000 kg (15,000 lb), with provisions to carry combinations of:
Missiles:
4 x RB99 AMRAAM (JA 37D),
2 x RB71 Skyflash (only JA37),
6 x AIM-9 Sidewinder
4 rocket pods (135 mm, 5.4 in).
U95 ECM pod (JA 37D)
2 x RB 04
2 x RBS 15
2 x Rb 05
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