What is Small Satellite Launch Vehicle (SSLV-D2) ?

About the Small Satellite Launch Vehicle:

• The new vehicle was developed to capture the emerging small and microsatellite commercial market.
• The SSLV caters to the launch of up to 500 kg satellites to low earth orbits on a ‘launch-on-demand’ basis.
• The launch vehicle uses three solid stages followed by a liquid-fuel-based Velocity Trimming Module (VTM) to place satellites in orbit
• The rocket provides low-cost access to space, offers low turn-around time and flexibility in accommodating multiple satellites, and demands minimal launch infrastructure.
• It placed the Indian Space Research Organisation (ISRO) earth observation satellite EOS-07 and two co-passenger satellites — Janus-1 and AzaadiSat2

What is Janus-1?

• Janus-1 is a technology demonstrator satellite built by United States-based Antaris and its Indian partners XDLinks and Ananth Technologies.
• It weighs only 10.2 kg and is a six-unit cube satellite with five payloads on board — two from Singapore, and one each from Kenya, Australia, and Indonesia.

What is AzaadiSat2?

• The payloads have been built by 750 girl students from across India.
• The payloads include: LoRa amateur radio, a sensor to measure radiation levels in space, and sensors to measure the health of the satellite such as temperature, reset count, and inertial data.

Q1) What is low earth orbit?

An orbit around the Earth with an altitude that lies towards the lower end of the range of possible orbits. This is around 1,200 miles (2,000 kilometers) or less. 

Source:  ISRO’s SSLV-D2 launch today: The mini vehicle’s second flight, with promise on board