Usefully analyzing and testing impulse experimental device for landing gear actuator

Sections 1 through 3 of the full paper explain our analysis and testing mentioned in the title which we believe is useful. The three sections are entitled respectively: (1) "Composition and Working Principles of Impulse Experimental Device." (2) "Establishment of Mathematical Model of Impulse Experimental Device." (3) "Simulation of Water Hammer Waveform in Testing Impulse Experimental Device." Simulation results, presented in Figs.3 through 8 and Tables 2 through 4, and their analysis indicate preliminarily that: (1) we focus on the simulation analysis about various factors that impact the water hammer waveform, simulate the impulse waveform by the method that fixes part of the parameters and changes a parameter first; the factors include volume, pressure and front opening; (2) the final pipes determined by us have a large impact on the wave and can be replaced in the test; (3) for the major test specimen-retractable actuator of the landing gear-we calculate the main wave parameters after different combinations of parameters were simulated; (4) we determine the best parameter combination of the equipment, in the expectation of finding the best test waveforms which compliant the standard as soon as possible.