What is the difference between PSLV and GSLV?

Question

satellite launch vehicles

Answer 1

PSLV or Polar Satellite Launch Vehicle is an expendable launch system 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. PSLV can also launch small size satellites into Geo Transfer Orbits.

The GSLV or Geosynchronous Satellite Launch Vehicle was developed by Indian Space Research Organization (ISRO) to launch INSAT-type satellites into geostationary orbit to make India less dependent on foreign rockets. The GSLV improved on the performance of the PSLV with the addition of liquid strap-on boosters and a cryogenic upper stage. It is a three-stage launch vehicle with the first stage being solid-propelled, the second liquid-propelled and the final stage being cryogenically propelled. The solid first and liquid second stages are carried over from the PSLV.

Answer 2

PSLV or Polar Satellite Launch Vehicle is an expendable launch system 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. PSLV can also launch small size satellites into Geo Transfer Orbits.

The vehicle consists of two solid-propellant stages (stage 1 and 3) and two liquid stages (2 and 4).

After some delays, the first launch of the PSLV occurred on 20 September 1993. Although all main engines performed as expected, an altitude control problem was reported in the second and third stages. After this initial setback, ISRO met complete success with the third developmental launch in 1996. Further successful launches followed in 1997, 1999, and 2001.

In September 2002, the 1060 kg KALPANA-1 was launched by PSLV-C4 to a GTO orbit (Geo Transfer Orbit). On 17 October 2003, the 1360 kg Earth observing ResourceSat1 was launched by PSLV-C5.

On May 5, 2005, PSLV-C6 launched two satellites into orbit; CARTOSAT-I a stereoscopic Earth observation satellite with cartographic applications, weighing 1560 kg, and HAMSAT providing satellite based radio service for amateur radio operators, weighing 42.5 kg into a high polar orbit (632 x 621 km).

PSLV will continue be the work horse of the ISRO for its launches, especially for LEO satellites and the Chandrayaan Projects. It has undergone several improvements with each subsequent version, especially those involving thrust, efficiency and weight.




The GSLV or Geosynchronous Satellite Launch Vehicle was developed by Indian Space Research Organization (ISRO) to launch INSAT-type satellites into geostationary orbit to make India less dependent on foreign rockets. The GSLV improved on the performance of the PSLV with the addition of liquid strap-on boosters and a cryogenic upper stage. It is a three-stage launch vehicle with the first stage being solid-propelled, the second liquid-propelled and the final stage being cryogenically propelled. The solid first and liquid second stages are carried over from the PSLV. The GSLV used cryogenic upper stage supplied by Russia, having ordered 7 upper stages. India originally tried to buy the technology to build a cryogenic upper stage from Russia, but under pressure from the United States, that technology was not provided. Therefore, ISRO has been working on developing a cryogenic upper stage for the past eleven years.

The first two flights of the GSLV were developmental. The first, partially successful, flight was in April 2001 which launched GSAT-1. The second, which was fully successful, was in May 2003 launching the experimental communication satellite GSAT-2. The first operational flight (GSLV-F01) was the launch of the EDUSAT communications satellite on 20th September 2004. The fourth flight (GSLV-F02) on 10th July 2006 was unsuccessful in launching the 2168kg communications satellite INSAT-4C.

The four flights of GSLV so far have used Russian cryogenic engine for the last stage. The next flight is expected to use the cryogenic engine developed by ISRO.

The GSLV uses four L40 liquid strap-on boosters and can place approximately 5000 kg (11,000 lbm) into an easterly LEO orbit. Using the Russian KVD-1 cryogenic upper stage, GSLV can place 2200 kg (4,850 lbm) into an 18 degree Geosynchronous Transfer Orbit(GTO) orbit.

Answer 3

PSLV: Polar Satellite Launch Vehicle - is a single-use launch vehicle usually used to launch a payload into space

GSLV: Geosynchronous Satellite Launch Vehicle - to launch satellites into geostationary orbits.

so the difference is anwhere in space (PSLV) and Arround the earth (GSLV).

Answer 4

The GSLV or Geosynchronous Satellite Launch Vehicle was developed by Indian Space Research Organization (ISRO) to launch INSAT-type satellites into geostationary orbit to make India less dependent on foreign rockets. The GSLV improved on the performance of the PSLV with the addition of liquid strap-on boosters and a cryogenic upper stage. It is a three-stage launch vehicle with the first stage being solid-propelled, the second liquid-propelled and the final stage being cryogenically propelled. PSLV or Polar Satellite Launch Vehicle is an expendable launch system 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. PSLV can also launch small size satellites into geostationary transfer orbit (GTO). The vehicle consists of two solid-propellant stages (stage 1 and 3) and two liquid stages (2 and 4).

Answer 5

usually known by their abbreviation PSLV would be the first in business launch automobile of ISRO. PSLV is able to launching 1600 kg satellites within 620 km sun-synchronous polar orbit along with 1050 kg satellite in Geo-synchronous transfer orbit. From the standard setting, it steps 44.4 m tall, with a lift off weight of 295 tonnes. PSLV possesses four phases using sound and liquefied propulsion programs alternately. The 1st stage is among the largest sound propellant boosters on this planet and carries 139 tonnes of propellant. A cluster of six to eight strap-ons attached to the 1st stage generator, four that are ignited on the ground and a couple are air-lit.
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Answer 6

the difference lies in the amount of payload carried