Key features:
The Indian Space Research Organization (ISRO) is developing green propellants for future rockets, considering the harmful effects of exhausts released by rockets on the earth’s atmosphere.
- ISRO has developed eco-friendly solid propellant based on Glycidyl Azide Polymer (GAP) as fuel and Ammonium Di-Nitramide (ADN) as oxidizer at the laboratory level, which will eliminate the emission of chlorinated exhaust products from rocket motors.
- The LOX/LH2 (liquid oxygen – liquid hydrogen) combination is already being used in the cryogenic upper stages of GSLV and GSLV Mk-III launch vehicles.
- Additional Facts: ISRO has successfully developed ISROSENE, which is a rocket grade version of kerosene as an alternative to conventional hydrazine rocket fuel.
- The propellants that are being used now have a very reactive effect on the ozone layer due to the release of chlorinated exhaust products.
