To the theory of erosive burning of solid rocket fuels
The explanation of the erosive burning threshold presence is offered. It is shown that such kind of burning begins at decrease in thickness of the laminar sublayer (in a turbulent boundary layer) below width of the laminar burning zone. The expressions connecting critical (threshold) speed of the blowing stream and critical number of V.N. Vilyunov with properties of fuel and gas formed at its decomposition are obtained. Simple sedate dependences on speed of the blowing stream are found for speed of burning.