Accelerated Corrosion Enviroment Spectrum of Surface Coating on Helicopter Structure

An accelerated environmental spectrum for the outer coating of helicopter is presented, combined with the environmental features in a certain area and referred to existing research results. The spectrum is composed of hot-humid enviroment, ultravillet radiation and salt spray. The method for determining the parameters of every process and the equivalent relation between the accelerated spectrum and the nature environment are presented. The rationality of equivalent relation between the accelerated corrosion enviroment spectrum and the enviroment on the deck was validated by corrosion degree of the coating.