SPACE TECHNOLOGY -in the service of human kind

(ISRO)

-Bitan Dolai

PSLV

It’s history- The Polar Satellite Launch Vehicle, usually known by its abbreviation PSLV, is an expendable launch system 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 satellites into geostationary transfer orbit (GTO).

In April 2008, it successfully launched 10 satellites at once, breaking a world record held by

Russia. On 9 September 2012 the PSLV flew its 21th

consecutive successful launch mission.Its only failure in 22 flights was its maiden voyage in September 1993, providing the rocket with a 95 percent success rate.

A brief description of PSLV-C(20) :-

Typical Parameters of PSLV Lift-off weight -295 tonne Pay Load-1600 kg in to 620 km Polar Orbit,

1060 kg in to Geosynchronous Transfer Orbit (GTO)

 Height-44 metre

Development

1’st launching-UNSUCCESSFUL!!

The PSLV had its first launch on 20 September 1993. Although all main engines performed as expected, an altitude control problem was reported in the second and third stages.

Efficiency of PSLV-

After this initial setback ISRO met complete success with the third developmental launch in 1996. Further successful launches followed in 1997, 1999, and 2001.

PSLV continues to be the work horse of Indian satellite launches, especially for LEO satellites. It has undergone several improvements with each subsequent version, especially those involving thrust, efficiency as well as weight.

Successful launches with PSLV-As of February

2013 the PSLV has made 23 launches, with 21 successful, one failure and one partial failure

PSLV-C(20)-101th launch creates a history…

PSLV-C(20) -launched 7 satellite successfully

On 25 February 2013 PSLV-C(20) successfully launched 7 satellites from the First Launch Pad of Satish Dhawan Space Centre SHAR (SDSC SHAR), Sriharikota.

launches the Indo-French satellite SARAL along with six commercial payloads from Canada, Austria, Denmark and UK into a 785 km polar sun synchronous orbit inclined at an angle of 98.538 deg to the equator.

Satellites & their owner country-Name of satellites Country

SARALSAPPHIRENEOSSATNLS 8.1 (UNIBRITE)NLS 8.2 (BRITE)NLS 8.3 (AAUSAT-3)STRaND-1

India & FranceCanadaCanadaAustriaAustriaDenmarkUK

Benefit in Indian economy …

# SPOT-6(the satellite launched by PSLV-C(21) on sep. 9,2012) is the biggest commercial lift so far since India forayed into the money spinning commercial satellite launch services.

# PSLV –C(20) earned 100 cr. For

launching 7 commercial satellite from foreign country.

Planned launches with PSLV-

PSLV-HP (C22) on May 2013 TBD with 1380 kg satellite.

mission named as IRNSS-1

PSLV-XL 25 on October 2013 with TBD satellite.

mission named as Mangalyaan

These two satellites are totally developed by ISRO.

Congratulations to our scientists The launch of

this PSLV adds yet another golden milestone in the success story of Indian space history ... The credit for this achievement, undoubtedly, goes to our scientific community, particularly those working with ISRO..