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ISRO’s maiden SSLV earth observation and student satellites lifts off from Sriharikota spaceport

ISRO’s maiden SSLV earth observation and student satellites lifts off from Sriharikota spaceport.

ISRO’s maiden small satellite launch vehicle (SSLV), carrying earth observation satellite EOS-02 and co-passenger students satellite AzaadiSAT lifted off from this spaceport on Sunday. The SSLV-D1/EOS-02 mission by the Indian space agency is aimed at garnering a larger pie in the small launch vehicles market, as ite can place the satellites into Low Earth Orbit.

The SSLV can put payloads (mini, micro or nanosatellites) weighing upto 500 kg into the 500 km planar orbit, the Indian Space Research Organisation (ISRO) said.

At the end of a seven and a half hour countdown, the 34 metre long SSLV soared majestically at 9.18 am amid cloudy skies to place the satellites into the intended orbit.

The EOS-02 is an experimental optical remote sensing satellite with a high spatial resolution. Its is to realise and fly an experimental imaging satellite with a short-turnaround time and to demonstrate launch-on-demand capability. EOS-02 belongs to the microsatellite series of space crafts.

About SSLV-D1/EOS-02 Mission

ISRO developed a small satellite launch vehicle (SSLV) to cater the launch of up to 500 kg satellites to Low Earth Orbits on ‘launch-on-demand’ basis. The first developmental flight SSLV-D1/EOS-02 Mission is scheduled for August 7, 2022 at 09:18 am (IST) from the First Launch Pad of Satish Dhawan Space Centre, Sriharikota. SSLV-D1 mission would launch EOS-02, a 135 kg Satellite, into low earth orbit of about 350 km to the equator, at an inclination of about 37 degrees. The mission also carries AzaadiSAT satellite.

SSLV is configured with three solid stages 87 t, 7.7 t and 4.5 t. The satellite insertion into the intended orbit is achieved through a liquid propulsion-based velocity trimming module. SSLV is capable of launching Mini, Micro, or Nanosatellites (10 to 500 kg mass) to a 500 km planar orbit. SSLV provides low-cost access to Space on demand basis. It offers low turn-around time, flexibility in accommodating multiple satellites, launch-on-demand feasibility, minimal launch infrastructure requirements, etc. SSLV-D1 is a 34 m tall, 2 m diameter vehicle having a lift-off mass of 120 t.

EOS-02 is an earth observation satellite designed and realised by ISRO. This microsat series satellite offers advanced optical remote sensing operating in infra-red band with high spatial resolution. The bus configuration is derived from IMS-1 bus.

AzaadiSAT is a 8U Cubesat weighing around 8 kg. It carries 75 different payloads each weighing around 50 grams and conducting femto-experiments. Girl students from rural regions across the country were provided guidance to build these payloads. The payloads are integrated by the student team of “Space Kidz India”.

The payloads include a UHF-VHF Transponder working in ham radio frequency to enable voice and data transmission for amateur radio operators, a solid state PIN diode-based Radiation counter to measure the ionising radiation in its orbit, a long-range transponder and a selfie camera. The ground system developed by ‘Space Kidz India’ will be utilised for receiving the data from this satellite.

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