An Indian PSLV rocket on the morning of 22 June lifted off successfully with the country's earth observation satellite Cartosat and 30 other satellites.
The "Bahubali" or "fat boy" of Indian rockets - GSLV Mk III - weighs several tonnes more than some of the other expendable rockets in the world but its carrying capacity is far less.
According to Kumar, there will be one more developmental flight of 640 ton GSLV Mk III, before it graduates to operational mode.
ISRO has released high resolution photos of the successful maiden flight of the GSLV MKIII with the indigenous cryogenic engine.
GSLV-Mark III maiden launch: One large step for ISRO, a giant leap for India as a global space power
Called “fat boy” or “monster rocket”, the 640-tonne Geosynchronous Satellite Launch Vehicle (GSLV) Mark III blasted off from Sriharikota in Andhra Pradesh at 5.28 pm on Monday, marking India's most significant milestone in space technology.
President Pranab Mukherjee and Prime Minister Narendra Modi on Monday congratulated ISRO on the successful launch of India's latest communication satellite.
While Indian space scientists named the 640 tonne rocket "fat boy", the Telugu media nicknamed it "Baahubali".
ISRO's GSLV MK III D1 mission highlights: The heaviest Indian rocket successfully launches the GSAT-19
The GSLV MK III D1 mission is the first development flight of the GSLV MK III with the indigenously developed cryogenic engine on board.
ISRO's high thrust cryogenic stage was realised by the Liquid Propulsion Systems Centre (LPSC).
The countdown is progressing smoothly for the maiden launch of India's new heavy-duty GSLV-Mk III rocket scheduled for Monday evening.
Isro's rocket, weighing 640 tonnes and standing 43.43 metres tall, will blast off from India's rocket port at Satish Dhawan Space Centre.
India's heaviest rocket GSLV-Mk III is all set for its maiden flight into space along with a communications satellite on Monday, said ISRO.
The countdown for the GSLV Mk-III D1/GSAT-19 mission of 25 hours and 30 minutes began at 3.58 p.m. on 04 June.
This is the first developmental flight of the GSLV MK III, and will make it the heaviest rocket launch by the Indian space agency.
The first developmental flight of the rocket is a "great milestone" as ISRO is almost doubling the capacity to launch satellites.
A spanking new monster rocket is all set to launch an altogether new class of communications satellite.
The GSLV-MK III-D1 is a three-stage vehicle with two solid motor strap-ons, a liquid propellant core stage and a cryogenic stage.
Together, the GSAT-19, the GSAT-11 and the GSAT-20 will be able to provide 110 beams, and 88 GBPS of connectivity.
Regular launches of satellites are peppered throughout the year, considering the ever increasing demand of satellite based services in the country.
As part of the "Make in India" campaign, Isro has successfully realised the indigenous development of the Telemetry & Telecommand Processor (TTCP).