As of April 2015, the Indian Space Research Organisation (Isro) has launched 74 satellites.
Out of these, seven satellites failed to reach orbit due to launch failure and three satellites failed in orbit, Singh said.
In addition, Isro has successfully launched 40 foreign satellites belonging to 19 countries and four micro and nano satellites built by students of Indian universities using the PSLV rocket, he said.
Following the launch of the Isro IRNSS-1D navigational satellite at the end of March, Isro said it is looking at the possibility of having ion propulsion system to power its future satellites, said a senior space scientist on Saturday.
Liquid Propulsion Systems Centre director K.Sivan had said: “In order to reduce the satellite mass, we are looking at ion propulsion system.” Presently, satellite fuel occupies space and make it heavy. According to Sivan, the proposed technology would be tested in a communication satellite.
The other technology that the centre is working on is semi-cryogenic engine. India’s heavy rocket – Geosynchronous Satellite Launch Vehicle-MkIII – will be powered by the cryogenic engine.