A second-stage rocket nozzle extension would be fixed and is intended to improve performance and reduce costs. Credit: Firefly The Air Force Research Laboratory (AFRL) has awarded Firefly ...

The liquid engines being flown in the fourth stage of PSLV (PS4) use nozzle divergent made up of imported Columbium (C103) material. An alternate material, Stellite (KC20WN), was proposed for the ...