High-enthalpy propulsion wind tunnel air heating method and device

The invention discloses a high-enthalpy propulsion wind tunnel air heating method and device, and relates to the technical field of wind tunnel tests, and the technical scheme is characterized in thatthe method comprises the following steps that S1, the first-stage heating is carried out: a first-stage air heater is used to heat pure air; and S2, secondary heating is conducted, specifically, a supersonic combustion heater is adopted to organize combustion of the air flow passing through the S1 to conduct secondary heating, then combustion heating is conducted by supplementing oxygen and hydrogen into the supersonic combustion heater, and total enthalpy simulation of the flight mach number 12 is achieved. The device comprises the first-stage air heater, a first-stage equipment spray pipe,a second-stage air heater, a second-stage equipment spray pipe and a test section. Compared with a shock tunnel, the time of a ground test with the flight Mach number of 8-12 can be prolonged by one to two orders of magnitudes