Plasma arcjet tunnel segments and method of making same
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United States of America Patent
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Mar 31, 2009
Grant Date -
N/A
app pub date -
Oct 30, 2007
filing date -
Oct 30, 2007
priority date (Note) -
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Abstract
A plasma heated arcjet wind tunnel is provided with tunnel segments in the arc-constrictor. The tunnel segments are fabricated of two concentric discs, an outer disc and an inner disc, with a groove formed in an outer edge of the inner disc. The two concentric discs which fit snugly into one another and are joined at their welded interface by a straight and angled butt joint formed between an inner edge of the outer disc and an outer edge of the inner disc. The straight and angled butt joints can be welded by electron beam welding, laser welding, or friction stir welding.
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