It’s a sad coincidence that today’s failure of ISRO’s GSLV D3 Mission. Space missions are fraught with risks and failures. ISRO has had a reasonably good track record, especially if you compare it with the early days of the USA and USSR Space Programs. And ISRO has been able to achieve success on a literal shoe-string budget as compared to what the other space leaders have spent.
What is the big deal with the Cryogenic Engine? A Cryogenic Engine uses a liquid propellant (typically liquid hydrogen) that is stored at a very low temperature (below –200 C). The other engines that have been used in ISRO’s rockets (including the first two stages of today’s mission) are solid fuel propellant based. Cryogenic Engines deliver a longer duration and more powerful thrust, per unit weight of propellant. They can also be controlled more effectively as compared to solid fuel propellant engines. Hence Cryogenic Engines are critical, as the range and weight capabilities of space mission’s increase. GSLV rocket has been designed to put heavy payloads (communication satellites, etc.) into a ‘Geo-Synchronous’ orbit (36,000 km orbit around the from earth). It will also provide a basis for future ISRO Missions to the Moon and beyond.
A little after 4:30pm IST, a huge cloud of gloom descended upon ISRO. The first two stages had performed per expectations. However the 3rd stage powered by the cryogenic engine failed and the flight deviated from its desired path.
I am confident that ISRO will bounce back successfully from today’s failure, with the 2nd test flight due later this year. The data and results will be analyzed and corrective actions taken and soon India will join as 6th country of own Cryogenic Engine. Let’s not forget the spectacular success of the recent Chandrayaan Mission!!!