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Study optimizes critical speed in aero engine rotors, suggesting improved performance metrics.
The aero engine’s rotor system exhibits a second critical speed near to self-sustaining speed, indicating a potential design issue. Temperature control of the hot gases near self-sustaining speed requires steady operation, which conflict with the high acceleration requirement to pass the critical speed. The critical speed optimisation of the rotor system, to shift it away from self-sustaining speed, will change deformation of the rotor blade tip and influence the aero-engine performance. Multiobjective optimisation is proposed to solve this problem. The weight is set as a constraint with second critical speed and unbalance response as objectives. A multi-objective optimization framework using Utopia Tracking Approach (UTA) is developed for this practical problem and the
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Joseph Shibu K (2026) studied this question.
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