HOLLOW AIR FOIL

PROBLEM TO BE SOLVED: To provide an air foil having a trailing edge cooling device which is capable of controlling high cycle fatigue, increasing the film cooling downstream, and is furthermore simple to produce. SOLUTION: A hollow air foil 10 is provided with a pressure side wall 12, an intake side...

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Bibliographic Details
Main Authors SOECHTING FRIEDRICH O, PRZIREMBEL HANS R
Format Patent
LanguageEnglish
Published 24.08.1999
Edition6
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide an air foil having a trailing edge cooling device which is capable of controlling high cycle fatigue, increasing the film cooling downstream, and is furthermore simple to produce. SOLUTION: A hollow air foil 10 is provided with a pressure side wall 12, an intake side wall 14, a cavity formed in between the pressure side and the intake side wall, a plurality of cooling holes provided in the pressure side wall 12, and a plurality of ducts 42 each extending between the cavity and a cooling hole 18. Each duct 42 has a cross section that includes a first wall 54 adjacent to the intake side wall 14, a pair of duct side walls 58, and a second wall 56 adjacent to the pressure side wall 12. A pair of fillets 60, 62 is also provided so as to extend between the pair of duct side walls 58 and the second wall 56. Each duct 42 may include a protrusion adjacent to each cooling hole 18.
Bibliography:Application Number: JP19980341097