Dynamic Simulation and Experimental Research of High Pressure Pneumatic Valve in Gas-Driven Light Gas Gun

Abstract:

Use gas-driven light gas gun is one of the techniques extensively used to achieve hypervelocity projectiles. The device was made up of a compressed gas gun as the first-stage drive. A new type high pressure pneumatic injecting system of gas-driven light gas gun for hypervelocity launching is introduced. As a critical component of the injecting system, the high pressure pneumatic valve was designed. Functions of the pneumatic valve were preserved and relevant techniques were discussed. Besides, a high pressure pneumatic mass flow control test-bed using inert medium was built in order to study the dynamic response characteristic of high pressure pneumatic valve in gas-driven light gas gun. To ascertain the response delay time of the valve, several turn-on and turn-off experimental tests of the valve were initiated. The results suggest that: the pressure of pneumatic electromagnetic valve gas supply circuit seriously influenced the properties of high pressure pneumatic valve; the mean delay time of the high pressure pneumatic valve was 190ms approximately at 6.5MPa gas pressure of the pneumatic electromagnetic valve gas supply circuit.

• Periodical: Applied Mechanics and Materials (Volumes 365-366)
• Pages: 289-293
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.365-366.289
• Online since: August 2013
• Authors: Yang Liu, Xiao Dong Song, Xiao Xian Yao, Kun Li
• Keywords: Delay Time, Dynamic Simulation, Experimental Research, Gas-Driven Light Gas Gun, High Pressure Pneumatic Valve, Hypervelocity launching

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