NDLI: Analysis of screen channel lad bubble point tests in liquid oxygen at elevated temperature

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Analysis of screen channel lad bubble point tests in liquid oxygen at elevated temperature

Content Provider	NASA Technical Reports Server (NTRS)
Author	Hartwig, Jason McQuillen, John
Copyright Year	2011
Description	The purpose of this paper is to examine the key parameters that affect the bubble point pressure for screen channel Liquid Acquisition Devices in cryogenic liquid oxygen at elevated pressures and temperatures. An in depth analysis of the effect of varying temperature, pressure, and pressurization gas on bubble point is presented. Testing of a 200 x 1400 and 325 x 2300 Dutch Twill screen sample was conducted in the Cryogenics Components Lab 7 facility at the NASA Glenn Research Center in Cleveland, Ohio. Test conditions ranged from 92 to 130K and 0.138 - 1.79 MPa. Bubble point is shown to be a strong function of temperature with a secondary dependence on pressure. The pressure dependence is believed to be a function of the amount of evaporation and condensation occurring at the screen. Good agreement exists between data and theory for normally saturated liquid but the model generally under predicts the bubble point in subcooled liquid. Better correlation with the data is obtained by using the liquid temperature at the screen to determine surface tension of the fluid, as opposed to the bulk liquid temperature.
File Size	1209424
Page Count	12
File Format	PDF
Alternate Webpage(s)	http://archive.org/details/NASA_NTRS_Archive_20110014530
Archival Resource Key	ark:/13960/t2z36t21n
Language	English
Publisher Date	2011-06-27
Access Restriction	Open
Subject Keyword	Spacecraft Propulsion And Power Pressure Dependence Fuel Systems Bubbles Temperature Effects Liquid Oxygen Interfacial Tension Cryogenics Capillary Flow Intake Systems Propellant Tanks Propellant Transfer Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science
Content Type	Text
Resource Type	Article

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