After a failed test six months ago, ISRO will make a static test of crucial liquid core stage (L110) of GSLV Mk III launch vehicle (rocket) for 200 seconds, a senior Indian Space Research Organisation (ISRO) official said.
Chairman of Bangalore-headquartered ISRO, K Radhakrishnan, is expected to witness the test at LPSC test facility in Mahendragiri, officials said. ISRO conducted the test for 150 seconds at LPSC test facility on March 5. While the test was originally targeted for 200 seconds it was stopped at 150 seconds since a deviation in one of the parameters - minor leakage in the command system - was observed.
GSLV Mk III rocket is being developed for launching four-tonne class of satellites in Geo-synchronous Transfer Orbit (GTO). Measuring 17 metres in length and four metres in diameter, L110 is an earth storable liquid propellant stage with propellant loading of 110 tonnes. L110 stage uses two high-pressure Vikas engines in a clustered configuration and draws its heritage from the second stage of PSLV and GSLV and strapons of GSLV. While in PSLV and GSLV, the liquid stage with single engine configuration burns for 150 seconds, the GSLV-Mk III requires burning for 200 seconds in a twin engine configuration.
ISRO has already successfully conducted the short-duration static test of the L110 stage, which uses two high-pressure Vikas engines in a clustered configuration.
In January this year, ISRO also successfully conducted static test of its largest solid booster S200, which would form the strap-on stage for the GSLV Mk III, at Satish Dhawan Space Centre (SDSC), Sriharikota. The successful test of S200 made it the third largest solid booster in the world, next to the RSRM solid booster of Space Shuttle and P230 solid booster of ARIANE-5.