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Liu X.-F.,Nanjing University of Aeronautics and Astronautics | Liu X.-F.,Anhui University of Technology | Liu W.-H.,Nanjing University of Aeronautics and Astronautics | Qian G.-C.,Jianghuai Aviation Oxygen Supply and Refrigeration Equipment Corporation Ltd Company | Zhao H.-T.,Jianghuai Aviation Oxygen Supply and Refrigeration Equipment Corporation Ltd Company
Hangkong Dongli Xuebao/Journal of Aerospace Power | Year: 2012

The experimentation and analysis of on-board hollow fibre membrane, which were jointly designed by a technic center, were systemically implemented by ground condition simulation. Results show that: (1) the oxygen concentration descends with input pressure increasing, ascends with input flux arising, and then is basically independent of the temperature of input air; (2) the oxygen concentration increases with the output flux gained, especially under the low pressure of input air; (3) the effect of height above sea level on the nitrogen-enriched performance of the membrane is light. The formula of nitrogen-enriched performance was found by multielement regression and validated by the comparison of experimental results. Source


Liu X.-F.,Nanjing University of Aeronautics and Astronautics | Liu X.-F.,Anhui University of Technology | Liu W.-H.,Nanjing University of Aeronautics and Astronautics | Qian G.-C.,Jianghuai Aviation Oxygen Supply and Refrigeration Equipment Corporation Ltd Company | Zhao H.-T.,Jianghuai Aviation Oxygen Supply and Refrigeration Equipment Corporation Ltd Company
Hangkong Dongli Xuebao/Journal of Aerospace Power | Year: 2010

The experimental and theoretical analysis was implemented on the basis of fuel scrubbing orthogonal tests for reducing experiment times. Results show that the nitrogen-filling performance of the scrubbing ejector is influenced by important factors of area ratio m, lenth to diameter ratio L/D, and nozzle pressure p. But their significance is relative. A series of experience formulae and good values is found out. The scrubbing ejector designed and manufactured on these formulae and values not only ejects very small nitrogen-enriched microbubbles to improve scrubbing efficiency, but also satisfies the oxygen concentration of ullage throughout. Source

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