LEAKAGE DETECTION OF MONOLAYER COBOTTOM TANKS IN FOREIGN COUNTRIES

Liu Dejin. LEAKAGE DETECTION OF MONOLAYER COBOTTOM TANKS IN FOREIGN COUNTRIES[J]. VACUUM AND CRYOGENICS, 1996, 2(2): 99-102.

Citation:

Liu Dejin. LEAKAGE DETECTION OF MONOLAYER COBOTTOM TANKS IN FOREIGN COUNTRIES[J]. VACUUM AND CRYOGENICS, 1996, 2(2): 99-102.

Citation:

Liu Dejin. LEAKAGE DETECTION OF MONOLAYER COBOTTOM TANKS IN FOREIGN COUNTRIES[J]. VACUUM AND CRYOGENICS, 1996, 2(2): 99-102.

Abstract

Two kinds of monolayer cobottom tanrs which store N₂O₄ and UDMH liquid propellant are used in many launch vehicles in foreingn countries. Russia and France adopt the vacuummethod of large vacuum tanks and barQtrOPic difference accumulating method respectivily for the leakage detection of their two stage cobottom tanks. The acceptance leakage rate by the above metionedleakage detection methods is about 1×10^-5 Pa· m³/s.

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