The composite flight profile of an aeroengine (AE) forms the basis for creating simulation mission test spectra and evaluating engine strength and lifespan, which is crucial for maintaining structural integrity. Improving the accuracy of these profiles has been a persistent challenge due to the limited representativeness and sample size of previous mission profiles. To address this issue and enhance accuracy, this study introduces a novel method for compiling AE composite flight profiles, focusing on analyzing mission segments rather than typical mission profiles. First, the mission segments related to operational maneuvers were analyzed and categorized based on specific maneuvers. The load characteristics of these mission segments were quantified, and the mixing of mission segment was calculated. Furthermore, using the principle of equivalent damage, the composite flight profile was compiled based on the load characteristics and mission segment mixing. Finally, the compilation results derived from mission segments were compared with those based on typical mission profiles, and compilation errors were evaluated. The comparison demonstrated that the accuracy of the mission segment-based compilation was significantly higher due to more precise statistical analysis of load characteristics and improved representativeness of mission segment mixing.
The compilation results of the aeroengine (AE) composite flight profile form the basis for developing the AE mission test spectrum, which is used to assess the lifespan of AEs during test runs. This study introduces a novel method for compiling composite flight profiles by analyzing mission segments and applying the principle of equivalent damage. Dividing mission segments based on various maneuvers represents a significant advancement in AE load analysis, particularly in China. The results showed a marked improvement in the accuracy of composite flight profile compilation when mission segments were utilized. This increased accuracy is attributed to the more representative statistical characteristics of load data, the inclusion of additional mission segments, and the improved representativeness of mission segment mixing. As a result, the new compilation method proposed in this study provides a stronger foundation for researching the structural strength and lifespan of AEs.
Compilation of Aero-Engine Composite Flight Profiles Based on Flight Mission Segment Analysis
Journal of Aerospace Engineering ; 38 , 5
01.09.2025
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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