Performance comparison of axisymmetric and three-dimensional hydrogen film coolant injection in a 110 N hydrogen/oxygen rocket | Zendy

Lynn Arrington | Zendy; Brian Reed | Zendy

Open Access

Performance comparison of axisymmetric and three-dimensional hydrogen film coolant injection in a 110 N hydrogen/oxygen rocket

Author(s) -

Lynn Arrington,

Brian Reed

Publication year - 1992

Publication title -

28th joint propulsion conference and exhibit

Language(s) - English

Resource type - Conference proceedings

DOI - 10.2514/6.1992-3390

Subject(s) - rotational symmetry , coolant , rocket (weapon) , hydrogen , oxygen , materials science , axial symmetry , mechanics , flow (mathematics) , aerospace engineering , nuclear engineering , engineering , mechanical engineering , chemistry , structural engineering , physics , organic chemistry

An experimental performance comparison of two geometrically different fuel film coolant injection sleeves was conducted on a 110 N gaseous hydrogen/oxygen rocket. One sleeve had slots milled axially down the walls and the other had a smooth surface to give axisymmetric flow. The comparison was made to investigate a conclusion in an earlier study that attributed a performance underprediciton to a simplifying modeling assumption of axisymmetric fuel film flow. The smooth sleeve had higher overall performance at one film coolant percentage and approximately the same or slightly better at another. The study showed that the lack of modeling of three-dimensional effects was not the cause of the performance underprediciton as speculated in earlier analytical studies.

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