Around 69% of the material used in manufacture of Advanced Light Helicopter (ALH) ‘Dhruv’ is procured from foreign sources. In terms of number of components involved, around 90% of the components are made in India.
The ALH is a multi-role, multi-mission helicopter in 5.5 ton class, fully designed and developed by Hindustan Aeronautics ltd. HAL’s Helicopter Division began series production of Dhruv (Advanced Light Helicopter) in 2000 – 2001. ALH is built toFAR 29 specifications, and is designed to meet the requirement of both military and civil operators.
It incorporates a number of advanced technologies like Integrated Dynamic System (IDS) , Anti-resonance Vibration Isolation System (ARIS) , Full Authority Digital Electronic Control (FADEC) , Hingeless Main Rotor, Bearingless Tail Rotor and Automatic Flight Control System.
ALH is designed to perform both utility and attack roles. ALH has a Twin engine configuration which allows continued flight virtually throughout the flight envelope.