Turbomeca TM 333 - Misplaced Pages

1970s French turboshaft engine

TM 333
Type	Turboshaft
National origin	France
Manufacturer	Turbomeca
First run	1981
Major applications	HAL Dhruv

The Turbomeca TM 333 is a turboshaft engine manufactured by French company Turbomeca and designed for helicopters weighing 4-5 tonnes. It first ran in August 1981 and was introduced commercially in the mid-1980s. It was the first Turbomeca engine to use a single stage turbine, making it more compact than its predecessors. In its original design, the engine was rated at 750 continuous horsepower, though it was designed to allow for future power increases, and the later 2B2 variant made 1,100 horsepower.

Variants

TM 333 2B2: The TM 333 2B2 powered early versions of the HAL Dhruv, though it was replaced by the Shakti engine, which was jointly developed by HAL and Turbomeca.
TM 333 2M2: The TM333 2M2 is used on the HAL Cheetal and Chetan, upgraded versions of the Cheetah and Chetak, respectively.

Applications

HAL Dhruv (Mk.1 and Mk.2)
HAL Cheetal
HAL Chetak

Specifications (TM 333 2M2)

Data from EASA TCDS E.030 TM333 Series Issue 05

General characteristics

Type: Twin-spool turboshaft
Length: 1,045 mm (41.1 in)
Diameter: 454 mm (17.9 in) (width), 745 mm (29.3 in) (height)
Dry weight: 162.5 kg (358.3 lb)

Components

Compressor: Two-stage axial, single-stage centrifugal
Combustors: Annular,reverse flow
Turbine: Single-stage compressor turbine, single-stage power turbine

Performance

Maximum power output: 736 kW (987 shp) (maximum continuous)

References

^ "TM.333; a new generation turboshaft" (PDF). Flight International. 1 January 1983.
^ "Military engines: Local power". Flightglobal. 1 May 2007. Retrieved 13 April 2017.
"Gaining altitude". Flightglobal. 21 February 2006. Retrieved 13 April 2017.
EASA E.030 www.easa.europa.eu - Retrieved: 7 December 2021