Via Hiseen. I guess this must be the same test So it is bench test
China's scramjet ignited successfully at speeds of up to 10,000 kilometers per hour
December 14, 2018 11:39 Global Times
Recently, the Institute of Aerodynamics Experiment and Engineering Application (Second Institute) successfully completed the oxy-hydrogen combustion propulsion test, achieving a gas velocity of nearly 3 km/s (10000 km/h) in 5 milliseconds. The supersonic auto-combustion in the supersonic combustion mode and the experimental data and flame images were obtained.
Carrying this test is the first high-energy pulsed wind tunnel driven by our institute independently developed and built by our institute. The operation of the wind tunnel is like operating a "super large pump", which generates high-temperature and high-pressure driving gas through the high-speed movement of the heavy piston, thereby compressing the test gas to a state of high total enthalpy and high total pressure, and then accelerating by the nozzle. Simulate or reproduce the ultra-high-speed flight environment when the aircraft returns to Earth or the Earth's outer planet.
According to the person in charge of the second and fourth rooms, the oxy-combustion propulsion test has overcome two key technical problems in the ground test of ultra-high-speed scramjet engines. One is through extremely accurate timing control technology, in one percent. In the blinking time (5 milliseconds), the space between the hydrogen fuel and the air at a speed of nearly 3 km/s (10,000 km/h) is achieved, and the state of "you have me, I have you" is achieved; The second is to use the technology of horizontal jet injection and concave flame stabilization to achieve supersonic ignition and stable combustion of hydrogen fuel, which is like achieving a match ignition and stable combustion in high-strength tornado.
The success of this test not only marks the official entry into the practical stage of our high-energy pulse wind tunnel, but also becomes an incubator for advanced aircraft. It also shows the amount of 3 km/s (10000 km/h, Mach 10) of this wind tunnel. A key breakthrough was made in the ability of the oxy-hydrogen combustion propulsion test, which provided a good technical reserve for the research of ultra-high-speed scramjet engines in China. This move will greatly accelerate the innovation process of the power technology of the world's transportation system, and promote the solution of the existing power of "opening the bow without turning back", so as to achieve a true "cloud", flexible and free to travel between the heavens and the earth.
