Isro's 12 PSLV first-stage S139 motors to be ready by the end of 2019

Indian Space Research Organisation (Isro) said that the 12 S139 (PSLV first stage) motors would be ready by 2019 end and have double the present capacity.

On the completion of 1000th solid motor casting by Solid Propellant Space Booster Plant (SPROB) at Sriharikota, Isro said the plant is now carrying out the massive task of delivering the S139 motors.

Solid propulsion plays an important role in launch vehicle technology. The reliability, simplicity, easy scalability and high thrust capability of a solid propulsion system makes it a preferred solution for a launch vehicle.

For developing expertise in large Solid Rocket Motors,