Case comprising internal and/or external stiffeners
AssigneeSafran Aircraft Engines
InventorsSylvain Yves Jean Duval, Arnaud Lasantha Genilier, Olivier Renon
Life of this patent
Estimating the term…
Abstract
The invention relates to a turbine engine case (1), extending around an axis, said case (1) comprising: a hub comprising an outer wall (21) and an inner wall (22) between which an annular flange (23) extends; an outer shell (3); a plurality of arms (4) which each extend between the hub and the outer shell (3); the case (1) further comprising a plurality of main stiffeners (5), each being disposed in the extension of an arm (4) between the outer wall (21) and the inner wall (22) projecting from the flange (23), each main stiffener (5) comprising two ribs (51, 52) arranged opposite one another and which move away from one another from the outer wall (21) towards the inner wall (22).
Claims9
A turbomachine casing, extending about an axis, the turbomachine casing comprising:
- a hub extending along a longitudinal axis, the hub comprising a radially outer wall and a radially inner wall that is radially separated from the radially outer wall with respect to the longitudinal axis, each of the radially outer wall and the radially inner wall extending along the longitudinal axis such that an outer side of the radially inner wall is opposite to and facing an inner side of the radially outer wall;
- an annular flange extending radially between the inner side of radially outer wall and outer side of the radially inner wall;
- an outer shroud radially separated from an outer side of the radially outer wall;
- a plurality of arms, each extending radially between the outer side of the radially outer wall and the outer shroud;
- and
- a plurality of main stiffeners, each main stiffener extending radially in an extension direction of an arm and between the inner side of the radially outer wall and the outer side of the radially inner wall, and each main stiffener protruding from the annular flange and extending radially along the annular flange, wherein each main stiffener comprises:
- a rod extending radially from the inner side of the radially outer wall toward the radially inner wall in the extension direction of the arm, and
- two ribs extending radially from the rod to the outer side of the radially inner wall,
- wherein the ribs are disposed on opposite sides of the rod and diverging from the rod, the ribs being connected to both the rod and the annular flange, and
- wherein the ribs move apart from each other as they extend from the rod toward the outer side of the radially inner wall.
Dependencies are inferred from the claim text.