Weight Reduction of the Hydraulic Cooling System of a Lightweight Rocket Launcher Using Thermal Balance Analysis
In order to reduce more weight of the hydraulic cooling system in a light rocket launcher,the typical operating condition is identified.A hydraulic model is established and simulated by the AMESim software,and a temperature rise test is conducted to verify simulation accuracy.Two key in-fluencing factors of the thermal effect are picked by the main objective method,and how they affect the thermal balance of the hydraulic system are studied respectively.The optimum scheme is proposed by the two-dimensional withdrawal method.It is shown that the maximum deviation between the results of the overall system simulation and temperature rise test is 1.55℃,thus verifying the accuracy of the model.Hydraulic tank volume affects the time to thermal balance and the speed of the hydraulic coo-ling process,but hardly the thermal balance temperature.However,the heat dissipating capability of the cooling radiator affects all the three factors.The optimum scheme is 19.7％lighter than the origi-nal hydraulic cooling system,and achieves the weight reduction goal.The method is low cost and in-volves small changes.It can serve as the basis for the quantitative analysis of critical factor sensitivity and support the research on the weight reduction of other hydraulic systems.
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