SNECMA Turbomeca Larzac

Larzac
Sectioned view of a SNECMA Turbomeca Larzac
Type	Turbofan
National origin	France
Manufacturer	SNECMA Turbomeca
Major applications	Dassault/Dornier Alpha Jet

The SNECMA Turbomeca Larzac is a military turbofan manufactured by GRTS (Groupement Turbomeca-SNECMA),^[1] a consortium between the two French companies, SNECMA and Turbomeca. Its main application was on the Dassault/Dornier Alpha Jet.

Variants

04-C6

04-C20

04-H-20

Applications

• Dassault/Dornier Alpha Jet
• HAL HJT-36

Specifications (Larzac 04-C6 / 04-C20

Data from ^[2][3]

General characteristics

• Type: Axial flow, twin-spool, bypass turbofan engine
• Length: 1,187 mm (46.73 in)
• Diameter: Inlet:452 mm (17.79 in)
• Dry weight: 295 kg (650.35 lb)

Components

• Compressor: Low pressure: 2 stages, High pressure: 4 stages
• Combustors: Annular
• Turbine: Low pressure: 1 stage, High pressure: 1 stage
• Fuel type: Aviation Kerosene Jet A-1 or similar
• Oil system: pressure spray/splash with scavenge

Performance

• Maximum thrust: (04-C6) 13 kN (2,970 lbf), (04-C20) 14 kN (3,200 lbf)
• Overall pressure ratio: (04-C6) 10.5, (04-C20) 11.1
• Bypass ratio: (04C6) 1.13, (04C20) 1.04
• Air mass flow: (04-C6) 28.1 kg (62 lb)/second, (04-C20) 28.6 kg (63 lb)/second
• Turbine inlet temperature: (04-C6) 1,403 K (1,130 °C; 2,066 °F), (04C-20) 1,433 K (1,160 °C; 2,120 °F)
• Specific fuel consumption: (04-C6) 73 kg/kN.h (1.579 lb/lbf.h), (04C-20) 76 kg/kN.h (1.644 lb/lbf.h)
• Thrust-to-weight ratio: (04-C6) 0.0448 kN/kg (4.567 lbf/lb), (04C-20) 0.048 kN/kg (4.92 lbf/lb)

See also

Comparable engines

• Ivchenko AI-25

Related lists

• List of aircraft engines

References

Notes

1. Gunston 1989, p.172.
2. "Larzac 04" (PDF). Snecma. Archived from the original (PDF) on November 10, 2006. Retrieved 2008-01-09.
3. "Vectors For September 2003". Retrieved 2008-01-09.

Bibliography

• Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9

External links

• Product page