A unique, patent pending, thermoacoustic propellant densifier, that simultaneously densifies liquid hydrogen and liquid oxygen propellants for aerospace vehicles is introduced. The thermoacoustic densifier consists of a two‐stage pulse tube cryocooler that operates at 30 Hz using helium as the working fluid. The extremely reliable pulse tube has no moving parts, is water cooled, and is acoustically driven. The pulse tube has been driven by a Thermoacoustic Stirling Heat Engine (TASHE) and a linear flexure bearing compressor. A laboratory prototype was designed, fabricated, and tested at the Sierra Lobo, Inc. facility in Milan, Ohio. Unique design features include a removable 2nd stage for easy testing of low temperature regenerator materials and an advanced aftercooler design geometry. A system description will be presented and experimental data of the pulse tube performance will be compared with REGEN 3.2 and other analytical predictions.
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23 June 2004
ADVANCES IN CRYOGENIC ENGEINEERING: Transactions of the Cryogenic Engineering Conference - CEC
22-26 September 2003
Anchorage, Alaska (USA)
Research Article|
June 23 2004
Hydrogen/Oxygen Propellant Densifier Using a Two‐Stage Pulse Tube Cryocooler
C. Nguyen;
C. Nguyen
1Sierra Lobo, Inc., Milan, Ohio 44846
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A. Yeckley;
A. Yeckley
1Sierra Lobo, Inc., Milan, Ohio 44846
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A. Culler;
A. Culler
1Sierra Lobo, Inc., Milan, Ohio 44846
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M. Haberbusch;
M. Haberbusch
1Sierra Lobo, Inc., Milan, Ohio 44846
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R. Radebaugh
R. Radebaugh
2NIST, Boulder, Colorado 80303
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C. Nguyen
1
A. Yeckley
1
A. Culler
1
M. Haberbusch
1
R. Radebaugh
2
1Sierra Lobo, Inc., Milan, Ohio 44846
2NIST, Boulder, Colorado 80303
AIP Conf. Proc. 710, 1703–1712 (2004)
Citation
C. Nguyen, A. Yeckley, A. Culler, M. Haberbusch, R. Radebaugh; Hydrogen/Oxygen Propellant Densifier Using a Two‐Stage Pulse Tube Cryocooler. AIP Conf. Proc. 23 June 2004; 710 (1): 1703–1712. https://doi.org/10.1063/1.1774869
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