Turbine disk interstage seal system

In a turbine engine of a type having a turbine section including first and second stage disks mounted on a compressor shaft, an interstate seal system comprising:

• an outer, generally cylindrical housing having a forward arm engaging said first stage disk and a rearward arm engaging said second stage disk, said forward arm and said first stage disk including means forming a bayonet connection therebetween, and means forming an anti-rotation connection therebetween;
• said forward arm including a forwardly-facing axial stop abutting said first stage disk;
• and a radially outward-facing radial stop abutting said first stage disk, said axial and radial stop engagements preventing forward axial and outward radial deflection, respectively, of said forward arm;
• said bayonet connection includes said forward arm having a plurality of radially inward-extending teeth;
• and said first stage disk having a plurality of radially outwardly-extending tabs, said tabs being spaced apart from each other and from said first stage disk to receive said teeth between said tabs, and between said tabs and said first stage disk in said bayonet connection, whereby rearward axial movement of said forward arm relative to said first stage disk is prevented;
• and
• said first stage disk includes at least one blade having a tab projecting rearwardly from a root thereof;
• and said forward arm includes forwardly projecting tab means for meshing with said tab.

In a turbine engine of a type having a turbine section including first and second stage disks mounted on a compressor shaft, and interstage seal system comprising:

• an outer, generally cylindrical housing having a forward arm engaging said first stage disk and a rearward arm engaging said second stage disk, said forward arm and said first stage disk including means forming a bayonet connection therebetween, and means forming an anti-rotation connection therebetween;
• said housing including a web and bore extending radially inwardly between said first and second stage disks;
• and
• said bore includes a rearwardly-extending conical arm;
• said first stage disk includes a cylindrical aft shaft;
• and said conical arm and said aft shaft include means cooperating to form a bayonet connection, whereby axial deflection of said web and bore is prevented.