초록 ▼

The present invention relates to a method and device for controlling the solid fuel regression rate of a solid fuel ramjet engine. In a preferred embodiment of the present invention, pressure oscillations are excited using active, closed-loop control to vary the heat transfer, and in turn the regres

The present invention relates to a method and device for controlling the solid fuel regression rate of a solid fuel ramjet engine. In a preferred embodiment of the present invention, pressure oscillations are excited using active, closed-loop control to vary the heat transfer, and in turn the regression rate of a solid fuel ramjet engine. The pressure oscillations are excited by introducing small disturbances into the shear layer. The disturbances are amplified in the shear layer and excite pressure oscillations. The disturbances are introduced at a certain phase relative to the pressure oscillations. This is accomplished by closed-loop control. By varying the phase, the amplitude of the pressure oscillations can also be varied, which in turn will vary the heat transfer, regression rate, and thrust level.

대표청구항 ▼

1. A method of controlling a solid fuel regression rate of a ramjet engine having a combustor with a shear layer, comprising:introducing disturbances into said shear layer, said disturbances exciting pressure oscillations having an amplitude and a frequency, said pressure oscillations varying heat t

1. A method of controlling a solid fuel regression rate of a ramjet engine having a combustor with a shear layer, comprising:introducing disturbances into said shear layer, said disturbances exciting pressure oscillations having an amplitude and a frequency, said pressure oscillations varying heat transfer across the solid fuel, wherein said varying of the heat transfer causes said regression rate of the solid fuel to change; monitoring said pressure oscillations; and controlling the phase between said pressure oscillations and said disturbances.