| Citation: | Liu Jiahuan, Liu Gaowen, Liu Yue, et al. Analysis and experimental study of leakage characteristics of rotating seal ring[J]. Journal of Aerospace Power, 2026, 41（X）：20250174 doi: 10.13224/j.cnki.jasp.20250174
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Rotating seal ring are used in aero engines to block low-temperature bleed air in the bearing cavity from high-temperature bleed air in the turbine. In order to obtain the influence of rotation speed and inlet and outlet pressure ratio on the sealing effect, an experimental system with high pressure ratio and high speed was built. Through the measurement of multi-section parameters, combined with the comparative experiments of sealing clearance and contact surface lubrication, the evolution law of leakage characteristics was analyzed. The results show that the leakage is reduced by 36.4% when the rotation speed is increased from 0 to
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