ISRO conducts static test of enhanced version of SSLV solid motor
The Indian Space Research Organisation (ISRO) has successfully conducted ground static test of an improved version of the solid booster stage (SS1) for the Small Satellite Launch Vehicle (SSLV).
The test was conducted on August 11, 2026 at the static test facility at Satish Dhawan Space Centre, Sriharikota.
Design improvements in the SS1 include “enhanced propellant burn rate in two motor segments, optimized thermal protection system and process improvements in the nozzle sub-system to make it more production friendly along with a reduction in its mass.”
The performance of the solid motor during the test was monitored through extensive instrumentation that measured more than 600 parameters to capture the ignition, ballistics, structural, thermal, dynamics and acoustic performances of the motor, ISRO said in an official statement, adding that performance of the motor based on test data was “close to the predicted performance.”
“This static test qualifies the design improvements implemented in the first stage of SSLV (SS1). The payload capability of SSLV is estimated to be enhanced by about 100-kg to Low Earth Orbit on the induction of this improved version of SS1,” the space agency said.
The Small Satellite Launch Vehicle (SSLV) was developed by ISRO as a production friendly, quick turn-around, launch-on-demand launcher and has completed two successful development flights.
The Transfer of Technology to the Indian industry is already underway, and the SSLV is expected to be manufactured in large numbers to provide small satellite launch services to customers, the statement added.
