Question

Please go through the information sheet attached and calculate the following:
i) Total number of launching attempt done by PSLV and GSLV.
ii) Success and failure percentage of PSLV.
iii) Success and failure percentage of GSLV.

The Mars Orbiter Mission (MOM), also called Mangalyaan, is a spacecraft orbiting Mars since 24 September 2014. It was launched on 5 November 2013 by the Indian Space Research Organisation (ISRO) It is India's first interplanetary mission and ISRO has become the fourth space agency to reach Mars, after the Soviet space program, NASA, and the European Space Agency. It is also the first nation to reach Mars orbit on its first attempt, and the first Asian nation to do so.
The Mars Orbiter Mission probe lifted-off from the First Launch Pad at Satish Dhawan Space Centre (Sriharikota Range SHAR), Andhra Pradesh, using a Polar Satellite Launch Vehicle (PSLV) rocket C25 at 09:08 UTC (14:38 IST) on 5 November 2013. The launch window was approximately 20 days long and started on 28 October 2013.

The Polar Satellite Launch Vehicle, commonly known by its abbreviation PSLV, 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 available only from Russia. PSLV can also launch small size satellites into geostationary transfer orbit (GTO).

Geosynchronous Satellite Launch Vehicle (abbreviated as GSLV) is an expendable launch system operated by the Indian Space Research Organisation (ISRO). It was developed to enable India to launch its satellites without dependence on foreign rockets and providers. GSLV has attempted eight launches to date, since its first launch in 2001 through its most recent launch in 2014.

In order to reach geosynchronous orbit, the GSLV needs more power than the PSLV could supply. The major changes are the addition of strapped-on liquid rocket boosters at the bottom, to increase (by ~50% for GSLV-I/II) the mass lift to low Earth orbit and then a cryogenic upper stage is added to transfer the payload to geosynchronous orbit.



PSLV Milestones
 PSLV-C26 launched IRNSS-1C on October 16, 2014 (Successful)

 PSLV-C23 launched SPOT 7 and four co-passenger satellites on June 30, 2014 (Successful)
 PSLV-C24 launched IRNSS-1B on April 04, 2014 (Successful)

 PSLV-C25 launched Mars Orbiter Mission Spacecraft on November 05, 2013 (Successful)
 PSLV-C22 launched IRNSS-1A on July 01, 2013 (Successful)

 PSLV-C20 launched SARAL and six commercial payloads on February 25, 2013 (Successful)
 PSLV-C21 launched SPOT 6 and PROITERES on September 09, 2012 (Successful)
 PSLV-C19 launched RISAT-1 on April 26, 2012 (Successful)

 PSLV-C18 launched Megha-Tropiques, SRMSat, VesselSat-1 and Jugnu on October 12, 2011 (Successful)
 PSLV-C17 launched GSAT - 12 on July 15, 2011 (Successful)

 PSLV-C16 launched RESOURCESAT - 2, YOUTHSAT and X-SAT on April 20, 2011 (Successful)
 PSLV-C15 launched CARTOSAT-2B, ALSAT-2A, NLS 6.1 & 6.2 and STUDSAT on July 12, 2010 (Successful)
 PSLV-C14 launched Oceansat - 2 and Six Nanosatellites on September 23, 2009 (Successful)
 PSLV-C12 launched RISAT-2 and ANUSAT on April 20, 2009 (Successfully)

 PSLV-C11 launched CHANDRAYAAN-I, on October 22, 2008 (Successful)

 PSLV-C9 launched CARTOSAT-2A, IMS-1 and Eight nano-satellites on April 28, 2008 (Successful)
 PSLV-C10 launched TECSAR on January 23, 2008 (Successful)

 PSLV-C8 launched AGILE on April 23, 2007 (Successful)

 PSLV-C7 launched CARTOSAT-2, SRE-1, LAPAN-TUBSAT and PEHUENSAT-1 on January 10, 2007 (Successful)
 PSLV-C6 launched CARTOSAT-1 and HAMSAT on May 5, 2005 (Successful)

 PSLV-C5 launched RESOURCESAT-1(IRS-P6) on October 17, 2003 (Successful)

 PSLV-C4 launched KALPANA-1(METSAT) on September 12, 2002 (Successful)

 PSLV-C3 launched TES on October 22, 2001 (Successful)

 PSLV-C2 launched OCEANSAT(IRS-P4), KITSAT-3 and DLR-TUBSAT on May 26, 1999 (Successful)
 PSLV-C1 launched IRS-1D on September 29, 1997 (Successful)

 PSLV-D3 launched IRS-P3 on March 21, 1996 (Successful)

 PSLV-D2 launched IRS-P2 on October 15, 1994 (Successful)

 PSLV-D1 launched IRS-1E on September 20, 1993 (Unsuccessful)









GSLV Milestones

 GSLV-D5 launched GSAT-14 on January 05, 2014 (Successful)

 GSLV-F06 launched GSAT-5P on December 25, 2010 (Unsuccessful)

 GSLV-D3 launched GSAT-4 on April 15, 2010 (Unsuccessful)

 GSLV-F04 launched INSAT-4CR on September 2, 2007 (Successful)

 GSLV-F02 launched INSAT-4C on July 10, 2006 (Unsuccessful)

 GSLV-F01 launched EDUSAT(GSAT-3) on September 20, 2004 (Successful)

 GSLV-D2 launched GSAT-2 on May 8, 2003 (Successful)

 GSLV-D1 launched GSAT-1 on April 18, 2001 (Successful)

Answer 1

polar satellite vehicle launches

total launches by  P S L V  = 28
Successful =  27
percentage successful launches =  27*100/28  %
percentage of unsuccessful launches =1*100/28  %

Geostationary space vehicle launches

total launches by  G S L V  = 8
Successful =  5
percentage successful launches = 5 * 100 / 8 %
percentage of unsuccessful launches = 3 * 100 / 8  %