A milestone crossed in the making of a new cryogenic rocket engine set the stage for the first flight of the country’s most powerful satellite launcher to date, the GSLV-Mark III. The cryogenic stage and the entire launch vehicle’s readiness is closer to fruition after the engine, technically called CE20, passed the ‘high altitude flight acceptance test’ lasting about 25 seconds at Mahendragiri in mid-December. The Indian Space Research Organisation (ISRO) plans to fly its new launch vehicle powered by this new engine around March, and send the 3,200 kg GSAT-19 communication satellite to space on it. The launch was earlier slated for December 2016. MkIII, when it completes trials and commences functioning in the coming years, will double ISRO’s lifting power for communications satellites to 4,000 kilos. Vital stage In a few days from now, the rocket’s complete cryogenic third stage, replete with fuel tanks and systems built around the engine, will undergo its qualifying tes...