"This is another vertical static test of the Snark rocket engine on the "Gryoc" VTVL (Vertical Take-off, Vertical Landing) technology demonstrator vehicle. The propellants are nitrous oxide (N2O) and isopropyl alcohol (IPA). A number of different throttle settings were used, peak thrust being around 300N. This test was carried out in June 2016. In this test, the gimbal actuators have been temporarily removed and the engine mounted on its own load cell to get better thrust data."
"Because the engine was operated without thrust vectoring, the plume was concentrated in one spot on the blast deflector, so it got a bit melty by the end of the test."