AIRFOIL LEADING EDGE CHAMBER COOLING WITH ANGLED IMPINGEMENT
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United States of America Patent
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Issued Date -
Jul 23, 2015
app pub date -
Jan 23, 2014
filing date -
Jan 23, 2014
priority date (Note) -
Abandoned
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Abstract
An airfoil cooling arrangement (12), including: a leading edge chamber (54) configured to cool an interior surface (68) of an airfoil; and an impingement orifice (60) configured to direct an impingement jet (64) toward an impingement location (66) disposed on the interior surface and offset from a camber line (28) of the airfoil The airfoil cooling arrangement is effective to guide post impingement cooling fluid along the interior surface, through a leading portion (76) of the leading edge chamber, and then back toward a trailing edge (22) of the airfoil in a helical motion (114). A stagnation region (104) is formed adjacent the interior surface and on a trailing edge side of the impingement location, and a relatively high static pressure associated therewith is effective to contribute to the helical motion (114) of the post impingement cooling fluid within the leading edge chamber
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