Since there are no test and evaluation methods considering the long-term and coupling effects of climatic and dynamic environment in current missile developments,the work aims to propose an accelerated test design method for long-term and complex environmental worthiness of missile to support the evaluation of long-term and environmental tolerance.According to the life profile and environment profile,sensitive environmental factors of products were identified and collected.Then,based on the conventional test profile,modeling methods of accelerated factors were proposed for climatic factors and dynamic factors,respectively.Finally,the accelerated test profile with multi-factors was generated.With a steering gear system as the research object,the proposed method was used to design the accelerated test profile under long-term and complex environmental factors.Results indicated that the proposed method could recognize the weaknesses of long-term and complex environmental worthiness in short time,which was consistent with real failure modes.Based on the complex environmental factors during the life profile of missile,the proposed method can reflect the long-term and gradually-changed coupling effects under dynamic factors and climatic factors such as high temperature,dampness and heat,salt spray and temperature cycle,which can support the rapid evaluation of long-term and complex environmental worthiness of missiles and be applied in engineering.
missilelong-term and complex environmental worthinessaccelerated testclimatic environmentmechanical environmentenvironmental effects
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