Chennai: In its second dedicated commercial mission,
the Indian Space Research Organisation (ISRO) will launch three
Singapore Satellites by workhorse launch vehicle PSLV from the
a spaceport of Sriharikota, about 100 km from here, on June 30.
ISRO sources said the PSLV-C53, carrying the 365 kg DS-EO satellite
and two other co-passenger satellites will lift off from the Second Launch
The pad at 1800 hrs on Thursday evening.
The 25-hour countdown leading to the launch will begin at 1700 hrs
PSLV-C53 is the second dedicated commercial mission of NewSpace
India Limited (NSIL). It is designed to orbit the DS-EO satellites along with
two other co-passenger satellites from Singapore.
This is the 55th mission of PSLV and the 15th mission using PSLV-Core
It is the 16th PSLV launch from the Second Launch Pad.
The mission proposes to demonstrate the utilization of the spent upper
stage of the launch vehicle as a stabilized platform for scientific payloads
subsequent to the separation of the satellites.
The four-stage, 44.4 m tall PSLV-C53, has a lift-off mass of 228.433 tonnes.
ISRO said the PSLV-C53 would inject the DS-EO satellite into an orbit with
a semi-major axis of 6948.137 + 20 km, at an altitude of 570 km measured
from the equator, with a low inclination of 100 + 0.20.
PSLV-C53 carries three satellites–DS-EOand NeuSAR, a 155 kg satellite
both belonging to Singapore. The third satellite is a 2.8 kg Scoob-1 of
Nanyang Technological University (NTU), Singapore.
PSLV Orbital Experimental Module (POEM) DS-EO carries an electro-optic,
the multi-spectral payload that will provide full-color images for land classification and serving Humanitarian Assistance and Disaster Relief needs.
NeuSAR is Singapore’s first small commercial satellite carrying a SAR payload, which is capable of providing images in day and night and under all weather conditions.
SCOOB-I satellite is the first satellite in the Student Satellite Series (S3-I), a
hands-on student training program from the Satellite Research Centre (SaRC) at Singapore’s NTU School of Electrical and Electronic Engineering.
The POEM activity will perform in-orbit scientific experiments using the spent PS-4 stage as an orbital platform. It is for the first time that the PS-4 stage would orbit the earth as a stabilized platform.
“Attitude stabilization is achieved using a dedicated NGC system. POEM derives the power from the solar panels mounted around the PS4 tank and a Li Ion battery”, ISRO said, adding, that it navigates using four sun sensors, a magnetometer, gyros, and NavIC.
It carries dedicated control thrusters using Helium gas storage and is enabled with the telecommand feature. POEM carries six payloads including two from Indian Space Start-ups M/s Digantara and M/s Dhruva Space enabled through IN-SPACe and NSIL.