Turbomeca Aubisque

Aubisque / RM9
Preserved Turbomeca Aubisque
Type	Turbofan
National origin	France
Manufacturer	Turbomeca
First run	1961
Major applications	Saab 105
Developed from	Turbomeca Bastan

The Turbomeca Aubisque was a small turbofan engine designed and produced by Turbomeca in the 1960s. Its only application was the Saab 105 military trainer aircraft as the RM9. The engine is named after the Col d'Aubisque in the Pyrenees mountains, in line with company tradition.

The earlier Turbomeca Marboré turbojet was originally intended for the Saab 105, but when Saab needed more thrust than the Marboré produced, Turbomeca offered the Aubisque turbofan. Basically a turbofan version of the Turbomeca Bastan turboprop, the Aubisque went into the production for the Saab 105. About 300 were produced. They were in service for 30 years until replaced in the mid-90's, by the Williams FJ44 turbofan, for the remaining Swedish Air Force Saab 105s.

Applications

• Saab 105

Specifications (Aubisque)

Data from Jane's All the World's Aircraft 1962-63

General characteristics

• Type: Low-bypass turbofan
• Length: 2,067 mm (81.4 in)
• Diameter: 564 mm (22.2 in)
• Dry weight: 243 kg (535.7 lb)

Components

• Compressor: Geared fan stage + single stage axial + single stage centrifugal
• Combustors: Annular chamber
• Turbine: Two stage

Performance

• Maximum thrust: 6.9 kN (1,543 lbf) at 32,500 rpm
• Overall pressure ratio: 6.9:1
• Air mass flow: 22.25 kg (49.1 lb)/sec
• Fuel consumption: 420 kg (925.9 lb)/hr
• Thrust-to-weight ratio: 0.062 kN/kg (2.88 lbf/lb)

See also

Related development

• Turbomeca Bastan

Related lists

• List of aircraft engines

References

Bibliography

• Taylor, John W.R. FRHistS. ARAeS (1962). Jane's All the World's Aircraft 1962-63. London: Sampson, Low, Marston & Co Ltd.
• Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9