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Analytical model for a leak detection system on Ariane 5 launcher cryogenic interfaces.

Number: pap. n. 0099

Author(s) : ABDALQADER A., RAYA Al-D., SAAD M.

Summary

Ariane 5 ECA launcher includes two cryogenic stages with both liquid hydrogen and liquid oxygen propellants. Tightness check of launcher interface valves is performed before lift-off. For the liquid hydrogen isolation valve of first stage, this check is made by measuring the pressure rise of the on-board / ground interface control volume which was previously flushed and purged of liquid propellant. This paper presents an analytical thermo-hydraulic model of the ground line supplying liquid hydrogen to first stage of Ariane 5 ECA launcher, with the purpose to study the sensibility of various parameters influencing the pressure evolution in the on-board / ground interface control volume during tightness check.

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Pages: 7 p.

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Details

  • Original title: Analytical model for a leak detection system on Ariane 5 launcher cryogenic interfaces.
  • Record ID : 30021755
  • Languages: English
  • Source: Cryogenics 2017. Proceedings of the 14th IIR International Conference: Dresden, Germany, Mai 15-19, 2017.
  • Publication date: 2017/05/15
  • DOI: http://dx.doi.org/10.18462/iir.cryo.2017.0099

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