ISRO to launch PSLV-C53/DS-EO Mission on June 30

PSLV also carried two other co-passenger satellites from Singapore

Nellore: Indian Space Research Organisation (ISRO) is all set to launch a DS-EO satellite on board the Polar Satellite Launch vehicle (PSLV-C53) at 6 pm on June 30, 2022 from the Second Launch Pad at the Satish Dhawan Space Centre, Sriharikota.

The countdown of 25 hours leading to the launch begins at 5 pm on June 29.

PSLV-C53 is the second dedicated commercial mission of NewSpace India Limited (NSIL).

It is designed to orbit DS-EO satellite along with two other co-passenger satellites from Singapore.

This is the 55th mission of PSLV and 15th mission using PSLV-Core Alone variant. 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.

A four-stage, 44.4 m tall PSLV-C53 has a lift-off mass of 228.433 t. It would inject DS-EO satellite into an orbit with semi-major axis of 6948.137 + 20 km, at an altitude of 570km measured from the equator, with a low inclination of 100 + 0.20.

PSLV-C53 carries three satellites. These include DS-EO, a 365kg satellite and NeuSAR a 155kg satellite -- both belonging to Singapore. The third satellite is a 2.8kg Scoob-1 of Nanyang Technological University (NTU), Singapore.

DS-EO carries an electro-optic, multi-spectral payload that will provide full-colour images for land classification, and serve in 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.

The SCOOB-I satellite is the first satellite in the Student Satellite Series (S3-I), a hands-on student training programme from the Satellite Research Centre (SaRC) at Singapore's NTU School of Electrical and Electronic Engineering.

The PSLV Orbital Experimental Module (POEM) activity is of performing in-orbit scientific experiments using the spent PS4 stage as an orbital platform.

This is the first time the PS4 stage would orbit the earth as a stabilized platform. Attitude stabilization is achieved using a dedicated NGC system.

POEM derives its power from solar panels mounted around the PS4 tank and a Li Ion battery. It navigates using four Sun sensors, a magnetometer, gyros & NavIC. It carries dedicated control thrusters using stored Helium gas. It is enabled with tele-command feature.

POEM carries six payloads including two from Indian Space Start-ups – the M/s Digantara and M/s Dhruva Space, enabled though IN-SPACe and NSIL.

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