India’s space research organisation ISRO has published a detailed report on why SSLV- D1 could not achieve it’s mission on Aug 7th 2022. As expected ISRO learnt it’s lessons, made “course corrections” and announced SSLV’s 2nd launch will be in Feb 2023.
Here’s a brief description of what went wrong and what will be launched soon.
SSLV is small satellite launch vehicle.
Why SSLV important for India?
~It’ll help launch small & medium satellites, with a payload capacity to deliver 500 kg (1,100 lb) to low Earth orbit (500 km (310 mi)
~ PSLV can concentrate on heavier launches
~SSLV is costs less and has a low turnaround of just 72 hours (compare it to PSLV 45-60 days with the involvement of 600 people). Faster assembly gives it ‘launch on demand” capability.
1st launch failure came with the loss of 2 Satellites (E02 & AzaadiSat).
The primary payload of SSLV is an Earth Observation Satellite called Microsat 2A or EOS-02
What went wrong in SSLV- D1 launch?
The ISRO report says
~ vibration disturbance for a short duration in 2nd stage
~ Failure of logic to identify a sensor failure and go for salvage action
~ Satellites were to be inserted into circular orbit instead they were placed in highly elliptical orbit. As a result the satellites are no longer usable.
What is SSLV-D2 launch about?
Reports in January confirmed 2nd launch will be carried out in Feb 2023.
SSLV D2 ‘ll test a space-based aircraft monitoring system. Satellite-based Automatic Dependent Surveillance-Broadcast (ADS-B). It’ll give details of all the aircrafts. Blind spots will now be covered! Apparently right now about 30% of the airspace across the globe cant be monitored.
ISRO said “SSLV-D2 is planned to be executed complying to the recommendations, its satisfactory implementation, review and approval by the authorized committees”.
All the best to the organisation which has always made India proud.