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TM 333 2B2

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The TM 333 2B2 is rated at 825 kW (1,100 shp) takeoff power. Its power output shaft has a nominal rotation speed of 6,000 rpm. The TM 333 2B2 is a power-turbine with a shaft passing through to the engine front turboshaft engine. It features a modular design: a reduction gearbox module and a gas generator module.

The TM 333’s different operational phases (starting, transient and steady state) are controlled by an Electronic Engine Control Unit (EECU) which provides valuable aid in piloting the helicopter and maintaining the engine. With its simple modular architecture, the TM 333 2B2 combines reliability, easy maintainability (TBO of 2,000 hours) and low consumption.

The TM 333 2B2 meets the power requirements of the 5- to 6-ton class twin-engine helicopters. The TM 333 2B2 was certified in December 2001 by the DGAC, the French Civil Aviation Authority. It was selected by HAL (Hindustan Aeronautics Ltd.) of India to power the Dhruv, its military twin-engine multi-role helicopter.

Technical Data

OEI 30 sec 910 kW / 1,219 shp
OEI 2 min 841 kW / 1,126 shp
OEI 30 min 807 kW / 1,081 shp
AEO (take off) 825 kW / 1,105 shp
AEO (max. continuous) 736 kW / 986 shp
Length 1045 mm / 41.1 in
Width 493 mm / 19.4 in
Height 745 mm / 29.3 in
Power output shaft speed 6000 rpm