HAL and CSIR-NAL Ink ToT for Tejas Mk1A Engine Bay Doors

Hindustan Aeronautics Ltd (HAL) has solidified a Transfer of Technology (ToT) agreement with CSIR-National Aerospace Laboratories (NAL) for the production of BMI Engine Bay Doors, crucial for the LCA – Tejas Mk1A fighter jets of the Indian Air Force.

About Tejas Mk1A

The Tejas Mk1A is an advanced 4.5 generation fighter aircraft, designed for all-weather and multi-role operations, and is a significant part of India’s indigenous defence capabilities.

Details of the ToT

The agreement enables HAL to manufacture high-temperature resistant composite parts crucial for the LCA Mk1A jets, addressing the initial needs of the IAF squadrons.

Innovations in Composite Structures

CSIR-NAL has developed, for the first time in India, a process technology for manufacturing High Temperature Resistant Co-cured Composite Structures using Carbon-BMI Prepreg. These are designed to endure service temperatures around 200 degrees Celsius.

Challenges in Processing

The processing of Carbon-BMI presents challenges due to the low viscosity at high temperatures, requiring careful containment of the resin within the laminate. Moreover, the emission of volatiles and moisture during curing necessitates proper venting to avoid defects like voids and delaminations.

CSIR-NAL’s Pioneering Role

Over three decades, CSIR-NAL has been instrumental in developing critical technologies for the LCA – Tejas. Their Advanced Composites Division (ACD) has been at the forefront in designing composite structures using innovative and cost-effective technologies, including co-curing and co-bonding methods.

Impact on LCA-Tejas Development

CSIR-NAL’s developments have significantly contributed to the LCA-Tejas project, yielding parts such as the Fin & Rudder, Wing Spars, and Undercarriage Doors. The lab’s innovations have led to more than 20% cost savings and a 25% weight reduction in the aircraft’s parts, enhancing structural efficiency by reducing mechanical joints.

Month: Current Affairs - November, 2023

Category: Defence Current Affairs