| 摘要 |
Tube 16 within airfoil 10 carries cooling air. Flow openings 28 in the tubes direct cooling air 29 against the airfoil inner surface 14. Protrusions 30 form extended surface in the form of segmented trip strips are located with segmented trip strips are located with at least same in registration with openings 28. The chamber 18 between the tube 16 and surface 14 has an increasing flow area toward air exit 20.
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