Friday, May 28, 2021

DRDO develops near-isothermal forging technology for aero-engines

 New Delhi: The Defence Research and Development Organisation (DRDO) has announced a modest step towards achieving the ultimate aeronautical challenge, one that even resource-rich China is struggling to achieve: Developing a jet engine with the thrust to power a fighter in combat.

“The DRDO established the near-isothermal forging technology to produce all the five stages of high-pressure compressor (HPC) discs out of difficult-to-deform, titanium alloy, using its unique 2000 MT (metric tonne) isothermal forge press,” announced the Ministry of Defence (MoD) on Friday.

This technological breakthrough, which involves developing complex titanium and nickel-based alloys that can withstand temperatures of more than 1,000 degrees Celsius, was achieved by the DRDO’s premier metallurgical laboratory, the Hyderabad-based Defence Metallurgical Research Laboratory (DMRL).

“With this development, India has joined the league of limited global engine developers to have the manufacturing capabilities of such critical aero-engine components,” said the MoD.

A fighter jet engine functions by sucking in a large volume of air, compressing it rapidly in several stages, injecting aviation fuel into the air and then setting it alight to create a high-pressure, high-temperature gaseous mix. That is expelled backward through the exhaust, its reaction propelling the aircraft forward.

To achieve this, jet engines have seven modules, which from front to rear are: the input fan, low pressure and high pressure compressors, the combustion chamber, high pressure and low pressure turbines and the exhaust.

28/05/21 Ajai Shukla/Business Standard

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