ISRO SET FOR PSLV-C42 MIS­SION TO­MOR­ROW

A ded­i­cated com­mer­cial mis­sion, the light­est ver­sion is sched­uled to launch 2 satel­lites - S1-4 and No­vaSAR - from UK

The New Indian Express - - TAMIL NADU - SV KR­ISHNA CHAI­TANYA

IN­DIAN Space Re­search Or­gan­i­sa­tion (ISRO) is all set for ded­i­cated com­mer­cial mis­sion PSLV-C42 - on Sun­day night car­ry­ing two in­ter­na­tional cus­tomer satel­lites. It is the first launch af­ter a gap of five months and is said to be a pre­lude for busiest months ahead for the na­tional space agency.

PSLV-C42 mis­sion in its Core Alone con­fig­u­ra­tion, is sched­uled to launch two satel­lites S1-4 and No­vaSAR from United King­dom. In this con­fig­u­ra­tion, the rocket will be with­out six solid strap-on mo­tors. This ver­sion was first flown in April 2007 and is the light­est ver­sion of PSLV. An­trix Cor­po­ra­tion Lim­ited, the com­mer­cial arm of ISRO has been con­tracted by Sur­rey Satel­lite Tech­nol­ogy Lim­ited (SSTL) of UK for launch­ing their two satel­lites.

Both these satel­lites are planned to be launched from first launch pad in a 583-km Sun Syn­chronous Or­bit (SSO). K Si­van, Chair­man, ISRO, told Ex­press that this launch will be­gin the busiest months ahead. “The plan is drawn to launch 22 mis­sions in 2019. There will a launch in re­main­ing three months of this year as well. In Oc­to­ber, GSLV Mk-III D2 car­ry­ing GSAT-29 will be launched fol­lowed by PSLV-c43 and in Novem­ber last week or De­cem­ber first week,GSAT-11, which was re­called ear­lier this year, will be launched by Ari­anes­pace,” he said.

To a query, Si­van said the five months gap was due to some cor­rec­tive mea­sures un­der­taken by the space agency. “The anom­aly in GSAT-6A, with which sig­nal link got lost soon af­ter launch on March 29, has iden­ti­fied a prob­lem in our so­lar panel de­ploy­ment. We re­called GSAT-29 for the same rea­son. Now, we have im­proved our sep­a­ra­tion sys­tems. Also, all the im­me­di­ate launches in­volved

are new and high­through­put satel­lites, which takes time,” he said.

PSLV is the well proven work­horse launch ve­hi­cle of In­dia. In 25 years, it has suc­cess­fully launched 52 In­dian and 237 in­ter­na­tional cus­tomer satel­lites. PSLV has time and again demon­strated its ca­pa­bil­ity of launch­ing mul­ti­ple satel­lites in a sin­gle mis­sion. In ad­di­tion, its up­per stage en­gine restart op­tion has fur­ther en­abled launch­ing satel­lites in dif­fer­ent or­bits in a sin­gle mis­sion.

Launch­ing mul­ti­ple satel­lites in a sin­gle mis­sion by PSLV has in­creased from three satel­lites in 1999, 10 in 2008, 20 in 2016 to the most re­cent mo­men­tous PSLV-C37 mis­sion in 2017 which launched a record 104 satel­lites in one go. PSLV was also in­stru­men­tal in sev­eral land­mark mis­sions of ISRO, in­clud­ing Chan­drayaan-1 and the Mars Or­biter Mis­sion.

The launch will be­gin the busiest months ahead. The plan is drawn to launch 22 mis­sions in 2019. There will a launch in re­main­ing three months of this year as well

K Si­van, ISRO Chair­man

EX­PRESS

PSLV-C42 Ve­hi­cle on the first launch pad with mo­bile ser­vice tower in the back­ground |

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