目的 研究科学确定航材封存期的方法。方法 深入分析航材封存期限的现状及影响航材封存期限的因素，研究通过运输实验、贮存实验和计算机模拟计算的方法确定航材封存期限，探讨延长航材封存期限的可能。结果 影响航材封存期限的关键因素是包装材料的水蒸气透过率和氧气透过率，可以据此计算航材封存期。结论 通过运输实验、贮存实验和计算机模拟计算的方法可以确定航材封存期，对延长封存期具有重要的意义。

The work aims to research the method to scientifically determine the storage period of aviation materials. An in-depth analysis on the current situation of and the factors that affect the storage period of aviation materials was conducted. During the research, the storage period of aviation materials was determined based on the transportation experiment, storage test and computer simulation calculation. On the basis of that, the possibility to prolong the storage period of aviation materials was discussed. The key factors that affect the storage period of aviation materials were water vapor permeability and oxygen permeability of the packaging materials. According to the key factors, the storage period of aviation materials could be calculated. In conclusion, the storage period of aviation materials can be determined based on the transportation experiment, storage test and computer simulation calculation, which has great significance for the prolonging of the storage period.