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SAAB 105

saab-105


Developed by Saab as a private venture, to add to its product line a lightweight turbojet-powered aircraft able to fulfil a number of civil and military roles, the Saab-105 entered the design stage in 1959. SAAB launched the Saab-105-project in April 1960. This shoulder-wing aircraft was originally engined by two French Turbomeca Aubisque turbofans. The project was company-funded and conducted by a design team under Ragnar Haerdmark.

On 16 December 1961, the Swedish government awarded SAAB a contract for a prototype of the SAAB 105 side-by-side two-seater and signed a letter of intent for at least a hundred production machines. In 1962, the Flygvapnet ordered 150 SAAB 105, designated Sk 60 (was to be Sk 55, but SAAB asked for number 60).

A cantilever shoulder-wing monoplane with marked wing anhedral and high T-tail, it has retractable tricycle landing gear, is powered by two turbofans nacelle-mounted one on each side of the fuselage, and has an enclosed cockpit that accommodates two side-by-side on ejection seats. Alternative seating for four can be provided on fixed seats.

The initial test flight was delayed to find an appropriate engine, eventually found in the 745kg thrust Turbomeca Aubisque. The first SAAB 105 prototype, registered SE-501, was flown on 29 June 1963. A second prototype, SE-502, flew on 17 June 1964.

Following extensive testing of the prototypes the Flygvapen placed an initial order in early 1964 for 130 production aircraft, a figure that was amended later to 150. The first of them was the Sk 60A trainer/liaison aircraft, flown initially on 27 August 1965 with deliveries for optional deployment in an attack role. The first Sk 60A, Swedish Air Force 60001, was delivered to the F 5 at Ljungbyhed in 1966. By 1969, 149 Saab Sk 60A, were delivered to the Swedish Air Force and placed in service.

Next to the SAAB 105 for the Swedish Air Force, SAAB worked on a military export model, the SAAB 105XT, with "XT" standing for "Export Tropic". This variant had more powerful General Electric J85-GE-17B turbojets and an improved wing structure. The second SAAB 105 prototype was modified and was flown first as Saab 105XT on 29 April 1967. It was registered SE-XBZ for use as a flying demonstrator. Austria ordered 40 SAAB 105XT machines with the designation of SAAB 105OE ("OE" for "Oesterreich"). Deliveries started in 1970 and the order was completed in 1972. The Saab 105OE is used in Austrian service for reconnaissance, support and air defence tasks.

The Saab 105 delivered to the Swedish Air Force as Sk 60A was an unarmed trainer. Starting in 1970, 46 Sk 60As were converted into Sk 60B standard, with three hardpoints beneath each wing enabling them to operate as a light ground attack aircraft.

Another 28 Sk 60A aircraft were modified to Sk 60C. The Sk 60C has a reconnaissance camera in the nose. The nose is longer and angular compared with the other versions of the aircraft. The Sk 60C prototype was the only new-build Sk 60C, when delivered to the Flygvapnet, making it the 150th and last new-build Sk 60 for the Swedish Air Force service.

In the mid-1970s, ten Sk 60A planes were configured as transports and given the designation of Sk 60D. A further development is the Sk 60E, which is equipped commercial-type instruments, including an instrument landing system. This variant has four seats, and consequently no rocket chairs. The Sk 60D and Sk 60E variants were also used for training of civil pilots. The Sk 60 has now gone trough a modernisation programme. The most important alteration was replacement of the Turbomeccas by the stronger William Rolls FJ 44 turbofans. The first Williams-powered Sk 60(W) was flown in August 1995. A total of about 115 conversions of Sk 60A, Sk 60B, and Sk 60C machines were performed in the late 1990s. In addition to its primary duty as a trainer, the Sk 60 is used as target aircraft, weather flying and liaison aircraft. A new variant, the Sk 60M, was developed to replace the Mitsubishi MU-2 target aircraft / target tug of Nyge Aero.

Surviving Swedish air force Sk 60s, of which there are four squadrons, have undergone a life extension programme at Saab.

Versions:
Sk60A
A60B
Sk60C
Sk60D
Sk60E
105 G/OE

Sk60A
Engine: RM9 Turbomeca Aubisque 2x 1638 lbs
Span: 9.5 m (31’2.25’)
Length: 10.5 m (34’5.5”)
Take-off weight: 4050 kg (8929 lb)
Maximum speed: 770 kph (478 mph)
Cruising speed: 640 kph (398 mph)
Landing speed: 165 kph (103 mph)
Range: 1940 km (1210 miles)
Max. altitude: 13500 m (44290 ft)

Sk60 B
Engine: RM9 Turbomeca Aubisque 2x 1638 lbs
Span: 9.5 ft (31’2.25”)
Length: 10.5 ft (34’5.5”)
Take-off weight: 4500 kg (9921 lb)
Maximum speed: 765 kph (475 mph)
Cruising speed: 640 kph (398 mph)
Landing speed: 165 kph (103 mph)
Range: 1780 km (1110 miles)
Max. altitude: 12000 m (39370 ft)

Sk60C
Engine: RM9 Turbomeca Aubisque 2x 1638 lbs
Span: 9.5 ft (31’2.25”)
Length: 11.0 m (36’1”)
Take-off weight: 4500 kg (9921 lb)
Maximum speed: 765 kph (475 mph)
Cruising speed: 640 kph (398 mph)
Landing speed: 165 kph (103 mph)
Range: 1780 km (1110 miles)
Max. altitude: 12000 m (39370 ft)

Sk60D
Engine: RM9 Turbomeca Aubisque 2x 1638 lbs
Span: 9.5 m (31’2.25’)
Length: 10.5 m (34’5.5”)
Take-off weight: 4050 kg (8929 lb)
Maximum speed: 770 kph (478 mph)
Cruising speed: 640 kph (398 mph)
Landing speed: 165 kph (103 mph)
Range: 1940 km (1210 miles)
Max. altitude: 13500 m (44290 ft)

Sk60E
Engine: RM9 Turbomeca Aubisque 2x 1638 lbs
Span: 9.5 m (31’2.25’)
Length: 10.5 m (34’5.5”)
Take-off weight: 4050 kg (8929 lb)
Maximum speed: 770 kph (478 mph)
Cruising speed: 640 kph (398 mph)
Landing speed: 165 kph (103 mph)
Range: 1940 km (1210 miles)
Max. altitude: 13500 m (44290 ft)

105G/OE
Engine: General Electric J85-17B 2x 2851 lbs
Span: 9.5 m (31’2.25”)
Length: 10.5 m (34’5.5”)
Height: 2.7 m (8ft 10in)
Wing area: 16.3 sq.m (175.46 sq.ft)
Empty weight: 2550 kg (5534 lb)
Disposable wt: 2000 kg (4409 lb)
Take-off weight: 6500 kg (14330 lb)
Maximum speed: 970 kph (603 mph)
Cruising speed: 800 kph (497 mph)
Climb to 10,000m (32810ft): 4.5 min
Landing speed: 165 kph (103 mph)
Range: 2750 km (1710 miles)
Range with 1361kg (3000 lb) load: 825 km (513 sm)
Max. altitude: 13700 m (44950 ft)

saab-105-ld

SAAB 105

 

 


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