Research on Impact Pressure Suppression Method in Pressure Refueling System
In terms of the problem of impact pressure on pipelines in the process of aircarft pressure refueling,an impact pressure suppression method was studied in this article.Based on one-dimension-al fluid network algorithm,the system simulation and mathematical models of straight pipe,bend,valve and other components in the fuel system are established.the simulation results show that the maximum impact pressure of the system occurs when the valve suddenly closed and it decreased con-cussively with the passage of time.At the same time,the impact pressure in short branch is obviously larger that in long branch.On this basis,the article propose three methods to suppress the impact pressure,which are prolonging the closing time of the valve,decreasing the length of branch and pressurizing the stabilizer on the branch respectively.These methods provide a reference for impact pressure suppression in the engineering application.
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