ANNULAR COMBUSTION CHAMBER FOR A TURBINE ENGINE INCLUDING IMPROVED DILUTION OPENINGS

The invention relates to an annular wall for a turbine engine combustion chamber, including an annular row of dilution openings including openings (40) having a larger surface are and openings (62) having a smaller surface area, as well as a multi-perforation consisting of micro-perforations (46) di...

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Bibliographische Detailangaben
Hauptverfasser:	BUNEL, JACQUES MARCEL ARTHUR, LEBLOND, NICOLAS CHRISTIAN RAYMOND, LAINS, DOMINIQUE MAURICE JACQUES
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	BLASTING COMBUSTION APPARATUS COMBUSTION PROCESSES GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING LIGHTING MECHANICAL ENGINEERING WEAPONS
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Beschreibung
Zusammenfassung:	The invention relates to an annular wall for a turbine engine combustion chamber, including an annular row of dilution openings including openings (40) having a larger surface are and openings (62) having a smaller surface area, as well as a multi-perforation consisting of micro-perforations (46) distributed in an upstream row (48), a downstream row (50), and at least one intermediate row (52) cut off by said openings, a geometric ratio being defined as the quotient of dividing the maximum spacing L between any two given points of the edge of said opening in a direction parallel to an axis of said wall by the maximum spacing L between any two given points of the edge of said opening measured in a direction perpendicular to said axis, said geometric ratio of said openings having a larger surface area being no lower than 1, and said geometric ratio of said openings having a smaller surface area being greater than that of said openings having a larger surface area. Paroi annulaire pour chambre de combustion de turbomachine, comprenant une rangée annulaire d'orifices de dilution comprenant des orifices (40) de plus grande superficie et des orifices (62) de plus petite superficie, ainsi qu'une multiperforation formée de micro-perforations (46) réparties en une rangée amont (48), une rangée aval (50) et au moins une rangée intercalaire (52) interrompue par lesdits orifices, un rapport géométrique étant défini comme le quotient de la division de l'écartement maximal L entre deux points quelconques du bord de cet orifice selon une direction parallèle à un axe de ladite paroi par l'écartement maximal L entre deux points quelconques du bord de cet orifice mesuré selon une direction perpendiculaire audit axe, ledit rapport géométrique desdits orifices de plus grande superficie étant supérieur ou égal à 1, et ledit rapport géométrique desdits orifices de plus petite superficie étant supérieur à celui desdits orifices de plus grande superficie.