Deflagration-to-detonation transition in the gas–liquid-fuel film system

A deflagration-to-detonation transition was experimentally detected for the first time in a channel with a thin wall liquid-fuel film and a gaseous oxidizer using a weak ignition source, which generates no primary shock wave of any significant intensity. In a number of tests, a low-velocity quasi-stationary detonationlike combustion front traveling at an average velocity of 700–900 m/s was recorded; the structure of this front included a leading shock wave and a reaction zone following after a time delay of 80 to 150 μs.