Information Technology Journal 1812-5638 1812-5646 Asian Network for Scientific Information 10.3923/itj.2012.532.535 Kaiyu Zhao Zhaohui Yuan 4 2012 11 4 The pressure impulse test system is a complex nonlinear system; its control methods are very different from the traditional linear systems. The difficulty of its analysis focused on the physical realization of the entire system and mathematical model on complex pipeline system. We analyze the composition and principles of the entire test system, detailed study the basic equation of unsteady flow and do the static design which provides parameters for the dynamic simulation. Method of characteristics is used to establish the mathematical model. Then we analyze the transient process of the test system with the model, main analyze the affecting factors of water hammer wave-shaped through simulation. Finally, verify the correctness of simulation analysis model and ensure the impulse test can be successfully completed through the test of our main specimen -retractable actuator of landing gear with different combinations of key parameters.

]]> 1 Chaudhry, H.M., 1983 Proceedings of the ASCE Hydraulics Specialty Conference, 1983 pp: 663 690 2 Evangelisti, G., 1969 L''Energ'ia Elettrica, 46 673 839 3 Evans, C.W. and T.R. Manley, 1986 Polym. Test., 6 135 149 4 Li, J., 2007 Principle analysis and control for pressure impulse test of airplane hydraulic system. 2007 5 Martinez, E., G.T. Davis and R.H.V. Brimer, 1972 Pressure impulse apparatus for initiating formation of fluid drops. 1972