Technology News: In a major technological, India’s Defence Research and Development Organisation (DRDO) said that it has successfully developed the single crystal blade technology and supplied 60 of them to the Hindustan Aeronautics Limited (HAL) as a part of a program to develop indigenous helicopter engines.
The single crystal blade technology was developed by Defence Metallurgical Research Laboratory (DMRL), a sub-division of the DRDO itself. The DMRL will develop 300 of these blades in total in numbers, of single high-pressure turbine out of a nickel based super alloy.
The single blade crystal technology is a very key component of modern helicopters and very few handfuls of countries like the U.S, U.K, France and Russia have the capability to produce them. When helicopters are expected to withstand high pressures, such single crystal blade technology are to be used effectively.
The new development has been through several stages, learnt from a previous attempt by the DMRL. The DMRL gained expertise in this overtime, complete vacuum investing casting process, die design, wax pattering, ceramic molding, actual casting of non-destructive components, heat treatments and directional evaluation were established, says DMRL.