| Abstract:In order to conduct engine inlet heating simulation tests, an inlet heating test was carried out on a ground-level test bed, a
set of suitable inlet heating equipment was designed, and the inlet heating testing scheme and test method were proposed. The results show
that at the inlet temperature of 108.88℃, the circumferential extent of the high-temperature region was 180°, the high-temperature regions
were mainly distributed at 0° and 180°, the low-temperature regions were distributed at 90° and 270°, separating the high-temperature
regions. The difference between the average temperature in the high-temperature regions and the area-weighted face-average temperature
was small, and the circumferential temperature distortion intensity was 0.43%, indicating a uniform temperature distribution and no strong
temperature distortion; it took 80 seconds for the inlet temperature rose from 94.82℃ to 108.88℃, and the temperature rise rate of high-
temperature region was 0.18 ℃/s, the time-variant temperature distortion was small, the stability margin loss was small, the temperature
field was irrotational, and the distribution of high-temperature regions and the circumferential temperature distortion intensity did not show
significant changes obviously with time. When the inlet temperature rose from 65.34℃ to 108.88℃ , the circumferential distribution
remained uniform, and the linear relationship between the area-weighted face-average temperature and the area-weighted average
temperature of the high-temperature regions was established. The relationship between the area-weighted face-average temperature and
the inlet air temperature acquired by the engine control system was obtained. |
