Abstract: A seal for sealing the gaps between adjacent turbine blade structures is disclosed in which the seal is disposed in a compartment formed between adjacent turbine blade structures having first and second sealing surfaces adjacent to a generally axially extending gap and a generally radially extending gap, respectively. The seal also has a thrust surface extending obliquely to a radius from the axis of rotation of the rotor disk to which the turbine blade structures are attached which is engaged with a reaction surface formed on a reaction member located in the compartment. During rotation of the rotor disk, centrifugal force acting in a radially outward direction is transmitted both radially and axially to a seal by contact between the reaction surface and the oblique thrust surface to cause the first sealing surface to seal the generally axially extending gap and the second sealing surface to seal the generally radially extending gap.

Abstract: A system is described for removably attaching a pre-vaporizing bowl to the wall of the combustion chamber. The system prevents relative rotation between the pre-vaporizing bowl and the combustion chamber, as well as any relative axial movement between these elements. The system enables the pre-vaporizing bowl to be readily removed from the combustion chamber without the necessity of subjecting the assembly to any machining operations. By eliminating any welded elements, the present invention eliminates the need for transporting the assembly to a machine shop in order to disassemble the elements. The system includes a mounting member fixedly attached to an upstream end of the wall of the combustion chamber around an opening defined through the combustion chamber wall to accommodate the fuel injection nozzle. A flange, which defines a groove, extends in an upstream direction from the pre-vaporizing bowl.

Abstract: An annular member is attached coaxially to a disk of a turboshaft engine by ounting element comprising two separate sets of interengageable lugs, each set consisting of one ring of equi-angularly spaced lugs on the disk and another ring of equi-angularly spaced lugs on the annular member which is interengageable with the first ring by interleaving and overlapping the lugs of the two rings in bayonet fashion, the two sets of lugs being offset radially from each other and arranged so that they are interengageable simultaneously with each other. In addition the disk and the annular member are provided with substantially cylindrical coaxial surfaces which engage each other to ensure that the annular member is centered on the disk when the two sets of lugs are interengaged to attach the member to the disk.