Snecma

Valentine Bader

Nicolas Pommier

Christian Rene Schnell

Laurent Pierre Elysee Gaston Marnas

Laurent Marnas

Jean-Pierre Trzebski

Margaux Justine Dubois

Erwan Pierre Perse

Laurent Pierre Elysée Gaston Marnas

A turbomachine exhaust casing with connection roots between the structural arms of the casing and the annular endplates of the hub of the casing, each of said the roots having a profile that is optimized so as to reduce the level of stress in the connection portions, and thus increase the lifetime of the exhaust casing.

Exhaust casing for a turbomachine

An exhaust casing hub includes a hub center, and an upstream flange and a downstream flange arranged on either side of the hub center. Each flange is terminated by a rim. A plurality of cuffs are arranged on the hub center so as to form an angle from the tangent toward the radial direction of 10&#xb0; to 80&#xb0; , preferably 15&#xb0; to 75&#xb0;. At least one rib is formed at the base of each cuff below a critical stress region in the cuff. The rib is joined to the downstream flange by a downstream end and to the upstream flange by an upstream end.

Exhaust casing hub comprising stress-distributing ribs

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Vaux Le Penil, France

Valentine Bader