Geosynchronous Satellite Launch Vehicle Mark II
GSLV's primary payloads are INSAT
class of communication satellites that operate from
Geostationary orbits and hence are placed in
Geosynchronous Transfer Orbits by GSLV.
Further, GSLV's capability of placing
up to 6 tonnes in Low Earth Orbits broadens the scope of
payloads from heavy satellites to multiple smaller
Developed under the Cryogenic Upper
Stage Project (CUSP), the CE-7.5 is India's first
cryogenic engine, developed by the Liquid Propulsion
Systems Centre. CE-7.5 has a staged combustion operating
One Vikas engine is used in the
second stage of GSLV. The stage was derived from the PS2
of PSLV where the Vikas engine has proved its
The first stage of GSLV was also
derived from the PSLV's PS1. The 138 tonne solid rocket
motor is augmented by 4 liquid strap-ons.
Geosynchronous Satellite Launch Vehicle Mark II (GSLV Mk II)
the launch vehicle developed by India, to launch communication satellites in geo
transfer orbit using
cryogenic third stage. Initially Russian GK supplied cryogenic stages were used.
Later cryogenic stage was indigenously developed and
inducted in Jan 2014 from GSLV D5 onwards. This operational fourth generation
launch vehicle is a three stage vehicle with four liquid strap-ons.
The flight proven indigenously developed Cryogenic Upper Stage (CUS), forms the
third stage of GSLV Mk II. From January 2014,
the vehicle has achieved six consecutive successes