风扇盘是航空发动机的重要断裂关键结构，为保障其服役安全性和可靠性，需要编制反映实际使用情况的载荷谱，用于疲劳寿命评定。本文基于某发动机两种任务类型的实际使用数据，进行了风扇盘单参数载荷统计分析，采用任务段分析法编制了中值转速谱；采用SWT公式和线性累积损伤理论计算载荷谱损伤，采用DTW方法进行载荷谱相似性分析，结合TC17钛合金模拟试件成组试验，建立了基于载荷谱相似性的损伤分析方法；进行了机群风扇盘转速谱损伤计算，获得载荷谱损伤样本，拟合优度检验表明风扇盘转速谱损伤服从对数正态分布，中值转速谱损伤接近机群转速谱中值损伤，验证了编谱方法的合理性。为准确评估风扇盘安全寿命提供了重要支撑。

The fan disk is a critical fracture-prone component in aero-engines. To ensure its operational safety and reliability, it is essential to develop load spectrum that accurately reflect operating conditions, which are crucial for fatigue life assessment. This study conducts statistical analysis of single-parameter loading on fan disks based on operational data from two mission types of a specific aero-engine, and develops a median speed spectrum through mission segment analysis methodology. The load spectrum damage was calculated using the SWT equation and linear cumulative damage theory. Load spectrum similarity analysis was conducted with the DTW method. Based on group tests of TC17 titanium alloy simulated specimens, a damage analysis method based on load spectrum similarity was established. The damage of the fleet fan disk rotational speed spectrum was calculated to obtain a set of load spectrum damage samples. Goodness-of-fit tests indicated that the fan disk rotational speed spectrum damage follows a lognormal distribution. The damage corresponding to the median rotational speed spectrum closely approximates the median damage of the fleet rotational speed spectrum, validating the rationality of the spectrum development methodology. This provides critical support for accurately assessing the safe service life of fan disks.