Models Analyses for Traveling Wave Tubes Failure Rate Estimating in the Design

The work is devoted to the mathematical models study for operational failure rate estimating of traveling wave tubes. The detailed analysis of the parameters taken into account in the considered models is carried out. The key factors that have the greatest impact on the reliability characteristics are highlighted. Based on the results of numerical evaluation of the traveling wave tubes operational failure rate according to the considered mathematical models, a significant difference in the obtained results is shown. Mathematical models of operational failure rate, taking into account the key factors (temperature and manufacturing technology) based on the analysis of the causes of failure of traveling wave tubes are recommended to use. However, the considered mathematical models, in aggregate, do not take into account the key factors. This leads to an unreliable assessment of the reliability characteristics at the design stages.