The status and progress of solid fuel regression rate in scramjet combustion were elaborated

respectively. The progress and difficulties on regression rate was discussed

including type of solid fuel

combustion configuration

theoretical prediction model

numerical simulation and experimental analysis. The experience and methods from ramjet

thermal protection

insulation ablation can be used in solid fuel scramjet. The following perspectives were proposed: (1) thermal behavior of solid fuel under supersonic flow

heat and mass transfer process should be paid more attention; (2) research on characteristic of regression rate should be explored in depth; (3) the software should be developed and experiments should be conducted systematically. The objective of this work is to provide a reference for research in this field.