In its second successful mission within a week, ISRO launched three foreign satellites into a precise orbit from the spaceport here on Thursday.

PSLV-C53 is the second dedicated commercial mission of NewSpace India Limited (NSIL), the commercial arm of ISRO. On June 23, it launched GSAT-24 in its first “demand-driven” communications satellite mission after space sector reforms, allocating full onboard capacity to Direct-to-Home (DTH) service provider Tata Play.

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On Thursday, the 44.4-meter-tall four-stage PSLV-C53 lifted off from the second launch pad of the Satish Dhawan Space Center and put Singapore’s three satellites – DS-EO, NeuSAR and SCOOB-1 into their intended orbit.

ISRO Chairman S Somanath confirmed that the mission had achieved its intended goal, saying the rocket had placed the three customer satellites “into the exact orbit of 570 km with an inclination of 10 degrees” and congratulated NSIL for carrying out “another major mission this month “. the earlier one being the launch of GSAT last week.

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“With today’s mission, all three satellites have been placed in the correct orbit,” he said.

Mission Director SR Biju described the launch as “wonderful”.

Earlier, the launch vehicle lifted off at 18.02 at the end of the 25-hour countdown.

This is the 55th mission of the PSLV, often described as ISRO’s reliable workhorse, and the 15th using the PSLV-Core Alone variant. This also marks the 16th launch of PSLV from the second launch pad.

The mission, which is designed to orbit a DS-EO satellite along with two other satellites from ST Electronics, Singapore, proposes to demonstrate the use of the spent launch vehicle upper stage as a stabilized platform for science payloads after the satellites have separated, the Indian Space Research Organization (ISRO) announced.

DS-EO is a 365 kg satellite, while NeuSAR weighs 155 kg. Both belong to Singapore and were built by the Starec Initiative of the Republic of Korea, while the third satellite is the 2.8 kg SCOOB-1 of Nanyang Technological University (NTU), Singapore.

The PSLV Orbital Experimental Module (POEM) DS-EO carries an electro-optical, multispectral payload that will provide full-color imagery for terrain classification and to serve humanitarian and disaster relief needs. NeuSAR is Singapore’s first small commercial satellite carrying an AR payload that is capable of providing images during day and night and in all weather conditions.

SCOOB-I is the first of the Student Satellite Series (S3-I), a hands-on training program for students from the Satellite Research Center (SaRC) at NTU’s School of Electrical and Electronic Engineering in Singapore.

The POEM activity conducts science experiments in orbit using the PS4 stage in use as an orbital platform, ISRO said. This is the first time the PS4 stage will orbit the earth as a stabilized platform.

Attitude stabilization is achieved using a special NGC system, the release said. The POEM is powered by solar panels mounted around the PS4’s tank and a lithium-ion battery.
POEM carries six payloads, including two from Indian space startups M/s Digantara and M/s Dhruva Space enabled through IN-SPACe and NSIL.

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