In­dian rocket lifts off with coun­try’s HysIS, 30 for­eign satel­lites

Evening Today - - DISTRICT -

Sri­harikota: In­dian rocket Po­lar Satel­lite Launch Ve­hi­cle (PSLV) lifted off suc­cess­fully from here on Thurs­day with the coun­try’s Hyper Spec­tral Imag­ing Satel­lite (HysIS) -- an earth ob­ser­va­tion satel­lite -- and 30 other for­eign satel­lites.

The PSLV-CA (Core Alone) ver­sion (with­out its usual strapon mo­tors), stand­ing 44.4 me­tres tall and weigh­ing about 230 tonne, took off at 9.58 a.m. from the first launch pad here, spew­ing thick or­ange flame.

The PSLV rocket -- a four stage launch ve­hi­cle with al­ter­nat­ing solid and liq­uid stages/ en­gines -- had the 380 kg HysIS and 30 oth­ers to­gether weigh­ing 261.5 kg as its lug­gage. Ac­cord­ing to the In­dian Space Re­search Or­gan­i­sa­tion (ISRO), the en­tire mis­sion will be com­pleted in about 112 min­utes af­ter the rocket’s lift off.

Six­teen min­utes into the flight, the rocket’s fourth stage/en­gine will be switched off.

Just over 17 min­utes into the flight, the PSLV rocket will place the HysIS satel­lite with a mis­sion life span of five years in 636 km po­lar sun syn­chro­nous or­bit.

Af­ter that the rocket will be brought to a lower al­ti­tude of 503 km from 642 km.

Post ejec­tion of HysIS, the rocket’s fourth stage will be restarted at 59.65 min­utes af­ter the lift off. Later, the en­gine will be switched off and on twice be­fore the fi­nal pas­sen­ger is put into or­bit about 112.79 min­utes af­ter the rocket’s lift off.

The ISRO had ear­lier car­ried out a satel­lite mis­sion for over two hours in Jan­uary.

The pri­mary goal of HysIS is to study the earth’s sur­face in vis­i­ble, near in­frared and short­wave in­frared re­gions of the elec­tro­mag­netic spec­trum. It will also be used for strate­gic pur­poses.

The co-pas­sen­gers of HysIS in­clude one mi­cro and 29 nano satel­lites from eight dif­fer­ent coun­tries. All these satel­lites will be placed in a 504 km or­bit.

While 23 satel­lites are from the US, the rest are from Aus­tralia, Canada, Columbia, Fin­land, Malaysia, the Nether­lands and Spain.

These satel­lites have been com­mer­cially con­tracted for launch through An­trix Cor­po­ra­tion Lim­ited, the com­mer­cial arm of ISRO.

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