| Citation: | Zhang Guang’en, Jiang Wenxun, Wang Wen. Design of test rig and wear characterization of planetary sliding bearing under high-frequency start-stop conditions[J]. Journal of Aerospace Power, 2026, 41（10）：20250248 doi: 10.13224/j.cnki.jasp.20250248
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To investigate the wear behavior of the sliding bearing in aero-engine planetary gearboxes under high-frequency start-stop operating conditions, a dedicated test rig was constructed. This test rig enabled independent control of rotational speed and load, as well as combined loading, while simultaneously monitoring the static parameters of the bearing. By integrating numerical simulation with experimental validation, the theoretically derived static parameters were compared with measured data, confirming the reliability of the simulated conditions provided by the test rig. A total of 12 000 start-stop cycles were conducted according to actual flight conditions, capturing the evolution of surface topography and dimensional changes. The influence of surface wear on bearing performance was subsequently analyzed. Results indicated that after
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