Turbomeca Piméné - Misplaced Pages

1940s French turbojet engine

Piméné
Type	Turbojet
National origin	France
Manufacturer	Turbomeca
First run	1948

The Turbomeca Piméné was a small French turbojet engine produced by Turbomeca in the early 1950s.

First shown at the 1949 Paris Air Show this engine passed official type tests in 1950. A similar, but not directly related, smaller turboshaft, known as the Turbomeca Orédon, drove an alternator and was used as an aircraft auxiliary power unit,

Variants

TR-011: small 0.785 kN (176 lb_f) turbojet engine, precursor to the Orédon APU.
Piméné: enlarged 1.079 kN (243 lb_f) higher mass flow development of the TR-011 / Orédon.

Applications

Specifications

Data from Aircraft engines of the World 1953, Aircraft engines of the World 1950

General characteristics

Type: turbojet
Length: 880 mm (35 in) (1,094 mm (43.1 in) with exhaust duct
Diameter: 408 mm (16.1 in)
Dry weight: 54 kg (119 lb)

Components

Compressor: single-stage centrifugal compressor with 14 vanes
Combustors: single annular combustion chamber
Turbine: single-stage
Fuel type: kerosene
Oil system: dry sump with Turbomeca gear pump at 3.0 bar (43 psi)

Performance

Maximum thrust:

Take-off: 1.1 kN (240 lbf) at 36,000 rpm / sea level

Max continuous: 0.89 kN (200 lbf) at 34,000 rpm / sea level

Cruising: 0.78 kN (175 lbf) at 33,000 rpm / sea level

Overall pressure ratio: 4:1
Air mass flow: 2 kg/s (4.4 lb/s) at 36,000 rpm at sea level
Turbine inlet temperature:

Before turbine: 850 °C (1,560 °F; 1,120 K)

After turbine: 700 °C (1,292 °F; 973 K)

Specific fuel consumption: 108.3 kg/kN/h (1.062 lb/lbf/h)
Thrust-to-weight ratio: 2.077 at take-off thrust

References

Notes

Gunston 1989, p. 170.
Flight - Type test of the Turbomeca Piméné www.flightglobal.com Retrieved: 14 June 2012
Wilkinson, Paul H. (1950). Aircraft engines of the World 1950 (8th ed.). London: Sir Isaac Pitman & Sons Ltd. p. 37.
^ Wilkinson, Paul H. (1950). Aircraft engines of the World 1950 (8th ed.). London: Sir Isaac Pitman & Sons Ltd. pp. 112–113.
^ "AAPHT - La naissance de Turbomeca". www.amis-turbomeca.com (in French). Retrieved 16 January 2020.
Wilkinson, Paul H. (1953). Aircraft engines of the World 1953 (11th ed.). London: Sir Isaac Pitman & Sons Ltd. pp. 160–161.

Bibliography

Gunston, Bill. World Encyclopedia of Aero Engines. Cambridge, England. Patrick Stephens Limited, 1989. ISBN 1-85260-163-9
Kay, Anthony L. (2007). Turbojet History and Development 1930-1960 Volume 2:USSR, USA, Japan, France, Canada, Sweden, Switzerland, Italy and Hungary (1st ed.). Ramsbury: The Crowood Press. ISBN 978-1861269393.