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Model for Propellant Gases Flow Between Projectile Chamber and Gun Bore


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Model for Propellant Gases Flow Between Projectile Chamber and Gun Bore
FANG Qing1ZHAO Guo-zhi2
1.National Key Laboratory of Transient Physics;2.School of Mechanical Engineering,NUST,Nanjing 210094,China
quasi-steady flow flow through small-diameter orifice chambers on the projectile telescopic rod-tube penetrators
On the hypothesis of isentropic flow and quasi-steady flow,a model of gas parameters in the storage chamber is established by a method of the lumped parameters.The model involves that the propellant gases in bore of a gun pass a small-diameter orifice and flow into/from a storage chamber on the projectile.The calculations and the test data are in good agreement.The results are obtained.The numbers of propellant pressure in the chamber can reach the largest propellant pressure at the bottom of projectile.For the different geometrical coefficients of the chamber,the numbers of residual pressure in the chamber exist in a maximum as the projectile moves forward in bore of a gun.The work pressures of the chamber vary with the geometrical coefficient of the chamber within the range of largest pressure at the bottom of projectile.


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Last Update: 2012-12-19