Self-innovated ALTP heat-flux sensor and its performance tests

The transverse Seebeck effect is used to develop the ALTP heat-flux sensor for the high-frequency-pulse heat flux density measurement in hypervelocity wind tunnel tests. The self-innovated ALTP heat-flux sensor is statically calibrated with the xeon short arc lamp calibration system. And the sensitive coefficient is about 8.24 μV/(kW·m^-2), which is larger than the sensitive coefficient 6.90 μV/(kW·m^-2) of the ALTP heat-flux sensor developed abroad. Then an experiment was conducted in a shock wind tunnel to get the sensor's response time in comparison with thin-film-resistance heat-flux sensors, and the response time of the ALTP heat-flux sensor is less than 0.20 μs.