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purge
To rid a line or tank of residual fluid, especially of fuel or oxidizer in the tanks or lines of a rocket after a test firing or simulated test firing. It is done using a purging system that introduces a noncombustible gas, such as carbon dioxide, into the space above propellants to sweep out any toxic or combustible propellants.
Related category
• ROCKETRY TERMINOLOGYAlso on this site:
Encyclopedia of Alternative Energy & Sustainable Living
Encyclopedia of History