Abstract: The present invention provides a fastener for securing two pipe adapters within a casing such as a gas turbine casing. The fastener comprises a fastener body having a central bore for receiving the pipe adapters and having a first engagement portion, e.g. a radial projection extending into said central bore, for engagement with a first pipe adapter. The central bore has a second engagement portion, e.g. a threaded portion, for engagement with a second pipe adapter. The fastener further comprises an outer wall at least partly surrounding and spaced from the fastener body in a concentric arrangement. The outer wall comprises a fastener flange extending radially in a direction away from the fastener body for overlaying the casing. At least a portion of the outer wall is deformable (e.g. formed as bellows) so that, in use, axial and/or radial movement of the pipe adapters is dampened.

Abstract: A vane for use in a duct, such as an exhaust duct in a gas turbine engine, comprises a shear web arranged to extend substantially across the duct and to be fixedly attached to at least one wall thereof, and one or more vane plates removably mountable on the web. On each side of the web three retaining plates are secured to the web by bolts 18. A plurality of mounting brackets, are permanently fixed to the vane plates by riveting with countersunk-head rivets. Mounting brackets have tangs which are arranged for slidable engagement with the retaining plates in a direction opposite to arrow A. Thus, the vane plates may be slid along the web from a trailing edge of the vane to a leading edge, and back. Once the vane plates are in the required position on the web they may be secured against further sliding movement by a pair of limiting brackets, one on each side of the web.