bhagat
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Combat Vehicles Research and Development Establishment (CVRDE), Avadi, has indigenously designed and developed Aircraft-
Mounted Accessory Gearbox (AMAGB) for Light Combat Aircraft (LCA) Tejas. AMAGB is a critical Line Replacement Unit for the
LCA and forms an important part of the secondary power system of LCA Tejas.
AMAGB is a lightweight, compact, high speed, single input, multi-output gearbox with a maximum power transmission capability of 185 kW at a rated speed of 16,810 rpm. AMAGB casings are made of magnesium alloy and the gears are of DIN class 5. The gearbox has its own self-contained lubrication system with one pressure pump, two scavenge pump modules, and in-built oil passages (mini core technology), which ensures safe functioning/operation of the gearbox. AMAGB operates in two modes starter mode and accessory mode. In the starter mode, it aids in starting the engine through jet fuel starter where as in accessory mode, it drives accessories namely, two hydraulic pumps and an integrated drive generator. These accessories in turn generate hydraulic and electrical power required for the aircraft.
This gearbox has undergone strenuous environmental tests, for high temperature, low temperature, salt fog, sand and dust, and altitude along with structural integrity tests, namely, centrifuge test, shock test, and vibration test. Further, this gearbox has also undergone 1000 h of endurance test.
Till date, AMAGB gearboxes have undergone more than 2200 h of flight-testing with 1465 flights. As a precurser to induction
into the Indian Air Force, Type Approval from Centre for Military Airworthiness and Certification (CEMILAC) is mandatory. CVRDE has successfully obtained this Type Approval for AMAGB from CEMILAC.
Mounted Accessory Gearbox (AMAGB) for Light Combat Aircraft (LCA) Tejas. AMAGB is a critical Line Replacement Unit for the
LCA and forms an important part of the secondary power system of LCA Tejas.
AMAGB is a lightweight, compact, high speed, single input, multi-output gearbox with a maximum power transmission capability of 185 kW at a rated speed of 16,810 rpm. AMAGB casings are made of magnesium alloy and the gears are of DIN class 5. The gearbox has its own self-contained lubrication system with one pressure pump, two scavenge pump modules, and in-built oil passages (mini core technology), which ensures safe functioning/operation of the gearbox. AMAGB operates in two modes starter mode and accessory mode. In the starter mode, it aids in starting the engine through jet fuel starter where as in accessory mode, it drives accessories namely, two hydraulic pumps and an integrated drive generator. These accessories in turn generate hydraulic and electrical power required for the aircraft.
This gearbox has undergone strenuous environmental tests, for high temperature, low temperature, salt fog, sand and dust, and altitude along with structural integrity tests, namely, centrifuge test, shock test, and vibration test. Further, this gearbox has also undergone 1000 h of endurance test.
Till date, AMAGB gearboxes have undergone more than 2200 h of flight-testing with 1465 flights. As a precurser to induction
into the Indian Air Force, Type Approval from Centre for Military Airworthiness and Certification (CEMILAC) is mandatory. CVRDE has successfully obtained this Type Approval for AMAGB from CEMILAC.
