| Citation: | LEI Pengfei, CHEN Jiming, HU Yunhua, et al. Aerodynamic analysis on combined operation of main compressor and compressor for plenum suction system in continuous wind tunnel[J]. Journal of Aerospace Power, 2024, 39（12）：20220906 doi: 10.13224/j.cnki.jasp.20220906
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Aerodynamic performances of main compressor and compressor for plenum suction system (auxiliary compressor) were analyzed, and experiments were performed at 0.6 m continuous wind tunnel. The results showed that the pressure ratio and power of main compressor can be reduced by plenum suction, resulting in higher Mach number ability of wind tunnel and easier design of main compressor. However, the total power of wind tunnel increased with plenum suction, due to higher energy consumption of auxiliary compressor. At maximum suction rate condition, the power of main compressor dropped more than 15%, while the total power of wind tunnel increased by 20%. Auxiliary compressor had greater risk of surge if it operated with main compressor, especially at higher Mach number condition, and more attentions should be paid to its operation condition during Mach number regulation.
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