DRDO develops single crystal blades for helicopter engines SECTIONS Last Updated: Apr 27, 2021, 12:37 PM IST Share Synopsis "The DRDO has developed single crystal blades technology and supplied 60 of these blades to HAL as part of their indigenous helicopter development program for helicopter engine application," it stated. ANI A picture of Single Crystal Blades developed by DRDO for the helicopter engine application, in New Delhi on Monday Related Single crystal blades -- having complex shape and geometry -- are manufactured out of nickel-based superalloys that are capable of withstanding high temperatures, it noted. Helicopters used in strategic and defence applications need compact and powerful aero-engines for their reliable operation at extreme conditions, the statement mentioned.