Solid fuel pyrolysis rate determination method

The invention discloses a solid fuel pyrolysis rate determination method, and belongs to the field of solid fuel engines. The implementation method comprises the steps that high-pressure air flow enters the high-pressure cavity through the air inlet component, combustion conditions are provided for solid fuel in the transparent clamp, the high-energy laser heats the solid fuel through the observation window, the solid fuel is pyrolyzed, and the surface temperature of the solid fuel is adjusted in real time by controlling the power of the high-energy laser; a central cone is adopted to move under the control of a stepping transmission device and is matched with a spray pipe to control the pressure in a high-pressure cavity, and an infrared thermal imager and a high-speed camera are respectively used for capturing the surface temperature of the solid fuel and the consumption length of the solid fuel and are used for fitting a solid fuel pyrolysis rate equation so as to measure the pyrolysis rate of the solid fu