Effects of Mechanical Seal Parameters of Torpedo Tail Shaft on Leakage Rate

This paper establishes a mechanical seal leakage model of torpedo tail shaft, and analyzes the effects of fractal dimension, width of static ring, and spring pressure on leakage rate in order to determine design parameters of torpedo tail shaft seal leakage rate. In the condition of meeting the requirement of no leakage, this paper optimizes the parameters by using genetic algorithm in the specific conditions. The results show that the leakage rate is lower than 3mL/h in the specific navigation condition of a torpedo when the width of static ring, spring pressure and fractal dimension are in optimum combination.