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LAUNCH VEHICLE PROGRAMME (LV)

LAUNCH VEHICLE PROGRAMME (LV)

  • The launch vehicle is basically a rocket that carries the satellite into the orbit. A competent and robust LV forms the core of any successful space programme.
  • Geopolitical and economic considerations during the 1960s and 1970s compelled India to initiate its own launch vehicle program.
  • During the first phase (1960s-1970s) the country successfully developed a sounding rockets program, and by the 1980s, research had yielded the Satellite Launch Vehicle-3 and the more advanced Augmented Satellite Launch Vehicle (ASLV), complete with operational supporting infrastructure.
  • ISRO further applied its energies to the advancement of launch vehicle technology resulting in the creation of Polar Satellite Launch Vehicle (PSLV) and Geosynchronous Satellite Launch Vehicle (GSLV) technologies.

SATELLITE LAUNCH VEHICLE (SLV)

  • The Satellite Launch Vehicle (SLV or SLV-3) was a 4-stage solid-fuel light launcher. It was intended to reach a height of 500 km and carry a payload of 40-50 kg.
  • SLV-3 has launched Rohini-class satellites to near earth orbits. Its first launch took place in 1979 with 2 more in each subsequent year, and the final launch in 1983, before it was decommissioned.
  • Only two of its four test flights were successful. Incidentally, SLV-3 is the first stage of Agni missiles.

AUGMENTED SATELLITE LAUNCH VEHICLE (ASLV)

  • The Augmented Satellite Launch Vehicle was a 5-stage solid propellant rocket with the capability of placing a 150 kg satellite into LEO. It can place satellites in an orbit, around 900 kilometres above the earth’s surface.                                                LAUNCH VEHICLE PROGRAMME (LV)
  • This project was started by the ISRO during the early 1980s to develop technologies needed for a payload to be placed into a geostationary orbit. Its design was based on Satellite Launch Vehicle.
  • The first launch test was held in 1987, and after that 3 others followed in 1988, 1992 and 1994, out of which only 2 (1992. 1994) were successful, before it was decommissioned. The payloads of ASLV were stretched Rohini Satellite series (SROSS).

POLAR SATELLITE LAUNCH VEHICLE (PSLV)

  • The Polar Satellite Launch Vehicle is an expendable launch system developed and operated by the Indian Space Research Organisation (ISRO).
  • It was developed to allow India to launch its Indian Remote Sensing (IRS) satellites into sun synchronous orbits, a service that was, until the advent of the PSLV, commercially viable only from Russia.                                                                          LAUNCH VEHICLE PROGRAMME (LV)
  • PSLV can also launch small size satellites into geostationary transfer orbit (GTO). The PSLV has launched 41 satellites (19 Indian and 22 from other countries) into a variety of orbits to date.

SCIENCE AND TECHNOLOGY

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