Franck Roger Denis Denece

Bio: Franck Roger Denis Denece is an academic researcher from Snecma. The author has an hindex of 2, co-authored 3 publications receiving 98 citations.

Turbine ring assembly

Abstract: A turbine ring assembly includes a ring support structure and a plurality of ring sectors, each including a single piece of ceramic matrix composite material. Each ring sector includes a first portion forming an annular base with an inside face defining an inside face of the turbine ring and an outside face from which there extends two tab-forming portions including ends that are engaged in housings in the ring support structure. The ring sectors present a section that is substantially π-shaped and the ends of the tabs are held without radial clearance by the ring support structure. The tabs can have a free length in meridian section that is not less than three times their mean width.

Ensemble d'anneau de turbine

Abstract: L'ensemble d'anneau de turbine comprend une pluralite de secteurs d'anneau (10) en une seule piece en materiau composite a matrice ceramique et une structure de support d'anneau, chaque secteur d'anneau ayant une premiere partie (12) formant base annulaire avec une face interne definissant la face interne de l'anneau de turbine et une face externe a partir de laquelle s'etendent deux parties formant pattes (14, 16) dont les extremites sont engagees dans des logements de la structure de support d'anneau. Les secteurs d'anneau (10) sont a section sensiblement en forme de π et les extremites (14a, 16a) des pattes (14, 16) sont maintenues sans jeu radial par la structure de support d'anneau. De preference, les pattes (14, 16) ont, en section meridienne, une longueur libre au moins egale a 3 fois leur largeur moyenne.

High pressure turbine ring assembly for gas turbine of aviation engine, has ring sectors with pie shaped section, and upstream and downstream end portions of tabs maintained without radial clearance by metallic ring support structure

Abstract: The assembly has ring sectors (10) made of a single piece and of composite material with ceramic matrix. Each sector has an annular base (12) whose inner face defines an inner face of turbine ring (1). The base has an outer face from which an upstream tab (14) and a downstream tab (16) are extended. Upstream end portion (14a) and downstream end portion (16a) of the tabs are engaged in a hook (34) of a metallic ring support structure (3). The ring sectors have a section in the shape of pie, and the end portions of the tabs are maintained without radial clearance by the structure.

Turbine ring assembly

Abstract: A turbine ring assembly includes a ring support structure and a plurality of ring sectors, each including a single piece of ceramic matrix composite material. Each ring sector includes a first portion forming an annular base with an inside face defining an inside face of the turbine ring and an outside face from which there extends two tab-forming portions including ends that are engaged in housings in the ring support structure. The ring sectors present a section that is substantially π-shaped and the ends of the tabs are held without radial clearance by the ring support structure. The tabs can have a free length in meridian section that is not less than three times their mean width.

Fiber structure woven into a single part by means of 3d weaving, and use in the manufacture of a composite material part

Abstract: In a fiber structure woven into a single part by means of three-dimensional weaving, first woof threads connect therebetween warp thread layers from a first portion (1) of the fiber structure (10), which are adjacent to a disconnection (16), with warp thread layers from a second portion (14) of the fiber structure, which are located beyond the disconnection, and second woof threads connect therebetween warp thread layers from the second portion (14) of the fiber structure, which are adjacent to the disconnection, with warp thread layers from the first portion (12) of the fiber structure, which are located beyond the disconnection, such that the paths of the first and second woof threads intersect in at least one transition area (18) extending into the fiber structure from the base of the disconnection, the transition area extending over a distance greater than the pitch (p) between adjacent warp columns in the woof direction.

Turbine ring assembly comprising a plurality of ring sectors made from ceramic matrix composite material

Abstract: The invention concerns a turbine ring assembly comprising a plurality of ring sectors (1) made from ceramic matrix composite material and a ring support structure (2), each ring sector (1) having a part forming an annular base (5) with an inner face (6) defining the inner face of the turbine ring and an outer face (8) from which at least two parts forming lugs (9a; 9b) extend, the ring support structure (2) comprising at least two attachment lugs (11a; 11b) extending radially, the lugs (9a; 9b) of each ring sector (1) gripping the attachment lugs (11a; 11b) of the ring support structure (2) at least at the inner radial ends (14a; 14b) of said attachment lugs (11a; 11b).

Compliant rail hanger

Abstract: A gas turbine engine assembly includes a supporting component and a supported component. The supporting component includes features engaged by the supported component. The supported component comprises ceramic-containing materials.

Gas turbine engine spring mounted manifold

Abstract: An arcuate panel for a thermal control assembly includes an arcuate panel base, at least one axially extending panel header sealingly attached to a radially outwardly facing surface of the panel base, a plenum therebetween, one or more spray tubes or channels depending radially inwardly from the panel base and in fluid communication with the plenum, and radially outwardly biasing spring means mounted on or attached to the radially inwardly facing surface of the panel base. The panel may include at least one set of clockwise and counter-clockwise hinge wings attached to clockwise and counter-clockwise ends of the panel base, axial positioning means, and circumferential positioning means. The axial positioning means may include a circular row of spring clips mounted on the panel base. A hoop of arcuate panels pivotably attached by hinges may encircle a portion of a casing compressing leaf springs against rings of the casing.