Fig.1

Schematic diagram of solid-fuel scramjet［1］

Fig.2

Schematic diagram of solid rocket scramjet［1］

Fig.3

Structure of propellant combustion wave［4］

Fig.4

Center injection configuration of fuel-rich gas using support plate［25］

Fig.5

Configuration schemes of center injection and wall injection［26］

Fig.6

Elliptical/circular nozzle gas jet flame boundary development［27］

Fig.7

Diagram of different jet structures［29］

Fig.8

Structure diagram of different number of gas injection［30］

Fig.9

Injection configuration with different grids［31］

Fig.10

Schematic diagram of improved cavity［34］

Fig.11

Schematic diagram of dual-cavity［35］

Fig.12

Schematic diagram of experimental engine equipped with wedges［37］

Fig.13

Schematic diagram of experimental engine equipped with cavities and support plates［42］

Fig.14

Schematic diagram of experimental engine equipped with cavities and wedges［26］

Fig.15

Basic structure of supersonic gas phase transverse jet［44］

Fig.16

Particle distribution and vortex structure in supersonic gas-solid two-phase transverse jet （Q criterion）［51］

Fig.17

Experimental and numerical simulation of a single particle［55］

Fig.18

Comparison of King and L-W boron particle ignition models［79-80］

Fig.19

Reaction mechanism of bidirectional diffusion model［83］