In News: The maiden flight of ISRO’s newly developed Small Satellite Launch Vehicle (SSLV) suffered a setback, with “data loss” at the terminal stage, after three stages had “performed and separated” as planned.
- The satellites ended up being placed in an elliptical orbit, and are “no longer usable”.
- While the three solid fuel-based propulsion stages worked normally, the satellites were injected into a wrong orbit, due to failure of logic to identify a sensor failure.
- The new rocket was carrying an Indian Earth Observation Satellite, EOS-02, weighing 145 kg and AzaadiSat, made by 750 schoolgirls to celebrate 75 years of Independence under SpaceKidz India, weighing 8 kg.
Small Satellite Launch Vehicle (SSLV)
- SSLV is a rocket that is designed to orbit satellites weighing less than 500kg in Low Earth Orbit and 300 kg to Sun Synchronous Orbit (SSO).
- It is a 3 stage Launch Vehicle configured with three Solid Propulsion Stages and liquid propulsion-based Velocity Trimming Module (VTM) as a terminal stage.
- SSLV is the smallest vehicle at 110-ton mass at ISRO.
- It will take only 72 hours to integrate, unlike the 70 days taken now for a launch vehicle. Only six people will be required to do the job, instead of 60 people.
- The other features include: flexibility in accommodating multiple satellites, Launch on demand feasibility, minimal launch infrastructure requirements, etc.
Seamless launch of small satellites
- The SSLV is intended to cater to a market for the launch of small satellites into low earth orbits with a quick turn-around time.
- Suited for launching multiple microsatellites & supports multiple orbital drop-offs.
- Shift the burden of commercial launches from PSLV
- The SSLV is likely to cost a fourth of the current PSLV.
Source: Indian Express
Previous Year Question
Q.1) With reference to India’s satellite launch vehicles, consider the following statements: (2018)
- PSLVs launch the satellites useful for Earth resources monitoring whereas GSLVs are designed mainly to launch communication satellites.
- Satellites launched by PSLV appear to remain permanently fixed in the same position in the sky, as viewed from a particular location on Earth.
- GSLV Mk III is a four-staged launch vehicle with the first and third stages using solid rocket motors; and the second and fourth stages using liquid rocket engines.
Which of the statements given above is/are correct?
- 1 only
- 2 and 3
- 1 and 2
- 3 only