ENGINE SYSTEM

Two Turbomeca TM-333-2B2 engines are installed Two Turbomeca TM-333-2B2 engines are installed. The TM-333-2B2 engine is a FADEC free turbine turbo shaft capable of developing up to 801kw (1073 SHP) at take-off rating. Salient features of the engine are detailed below: Power output : 801 kw (1073 SHP) at take off, Sea Level, ISA conditions. Weight : 166.5 kg. (Dry engine with equipments

The Advanced Light Helicopter termed as “Dhruv” is a twin-engine, multi-role helicopter of 5.5 tonne class, powered by TM 333-2B2 Turbomeca engines Power from both engines is fed to the Main Gear Box (MGB) and transmitted to the main Rotor

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Engine Automatic Control - FADEC System (Figure 7.3-5) Each TM 333-2B2 engine is governed by a Full Authority Digital Electronic Control (FADEC) System. There is no ‘cross-talk’ between the left and right engines’ FADECs (except for free-turbine over speed interlock). The FADEC System for each engine consists of: • Digital Electronics Control Unit (DECU), which monitors all ratings and power from STOP to maximum limited value. The DECU box is fitted below the engine deck. • Hydro mechanical system components installed on engine. • Engine sensors. • Helicopter interfaces.