Investment Cast Superalloy Products for Aero Engines
Vacuum investment casting technology has been developed to produce state-of-the-art columnar grained blades and vanes for aero gas turbine engines. Enabling Technology Centre (ETC) for investment casting has been established at DMRL to produce components for Kaveri engine, Jet Fuel Starter (JFS) for Light Combat Aircraft (Tejas) and Pilotless Target Aircraft Engine (PTAE) for Lakshya. These components have met stringent airworthiness requirements and have been certified. Technologies of JFS and PTAE integral castings and Kaveri aerofoil castings have been transferred to HAL, Koraput. The production of JFS castings has commenced. Using the same technology, a high pressure turbine blade for Adour engine of Jaguar has also been developed.
Applications
Components for gas turbine engines of aircraft
Salient Features
- The Rotors have typical aero foils, varying in section and orientation from top (the leading edge) to bottom (the trailing edge) and from their root at the hub periphery to the free end
- In Stator, similar aero foils are placed in between the inner and outer shrouds
Present Status
- Technology of JFS and PTAE integral castings has been transferred to HAL, Koraput
- Production of JFS casting has commenced
