Knowledge of flame interaction with perturbation of the surrounding medium is insufficient. This study investigates various parameters and methods for clarifying the combustion mechanism. The conditions for the appearance of a cellular structure were formed by analysis of diffusion phenomenon. Because such a spontaneous transition is characteristic of laminar regimes, photographs of laminar flames of hydrogen 2H2 plus (alpha) 2 plus nN2 are shown. The mixture becomes leaner as the flame surface breaks into pieces. It is determined that the more strongly the laminar flame is broken up, the steeper is the slope K /SUB p/ on the initial segment of the curve of turbulent burnup velocity as a function of pulsation velocity. Other examples are also given. The change in laminar flame surface with fixed excess oxidizer coefficient as inert gas concentration varies is studied. In conclusion, an approximate expression is derived which corresponds to burnup velocities which can be predicted for various operational regimes by this function.