SOURCE: AFI
The Defence Metallurgical Research Laboratory (DMRL) is spearheading a project to extend the service life of the AL-31FP engine, a critical powerplant for several Indian fighter jets. However, this initiative awaits final approval from the Ministry of Defence (MoD).
A significant hurdle in extending the service life lies in the limited indigenization of the AL-31FP’s critical components. These components, including sensors, bearings, and Line Replaceable Units (LRUs), are currently sourced from external suppliers. This dependence on foreign sources not only complicates maintenance but also presents challenges for the life extension program.
Indigenizing LRUs proves to be especially demanding. These complex assemblies require not only advanced manufacturing capabilities but also extensive testing infrastructure. The current limitations in bench-level testing facilities further impede progress.
The program also faces challenges related to non-conformance issues encountered during engine testing. These snags, arising during the life extension process itself, necessitate further research and refinement of the techniques employed.
The potential life extension program for the AL-31FP engine holds immense significance. Extending the operational life of these engines beyond their original 2000 hours would translate into significant cost savings and ensure continued operational readiness for the Indian Air Force.
Overcoming the present hurdles requires a multi-pronged approach. Increased investment in indigenous capabilities for manufacturing critical components like LRUs is crucial. Additionally, establishing robust bench-level testing facilities will play a vital role in ensuring the success of the life extension program. Addressing non-conformance issues through further research and refinement of techniques is also essential.