Abstract:

From research of engineering application,the paper consi de rs that the average temperature spectra in three seasons of spring(and fall),sum m er and winter should be drawn up,under corrosion environment to be used in each year, and the average temperature spectrum of each season consists of three tem peratures: at noon,night and their average value. The content of other corrosion meda in respect to the average temperature spectrum at each season serves as the average corrosion medium of th is season.

Key words: air cr aft calendar life, temper ature spectrum, co rr o sion medium