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A turbine bucket dovetail secures buckets in a turbine rotor. The turbine bucket dovetail includes a plurality of hooks engageable with a wheel post of the turbine rotor, which hooks extend in an axial direction relative to the turbine rotor. A pocket is machined in a tangential face of the dovetail

A turbine bucket dovetail secures buckets in a turbine rotor. The turbine bucket dovetail includes a plurality of hooks engageable with a wheel post of the turbine rotor, which hooks extend in an axial direction relative to the turbine rotor. A pocket is machined in a tangential face of the dovetail, resulting in reduced peak stress in the wheel post dovetail edge at the gate opening.

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1. A turbine auxiliary bucket dovetail for securing closure buckets in a turbine rotor, the turbine auxiliary bucket dovetail comprising:a plurality of hooks engageable with a wheel post of the turbine rotor, the hooks extending in an axial direction relative to the turbine rotor; and a pocket machi

1. A turbine auxiliary bucket dovetail for securing closure buckets in a turbine rotor, the turbine auxiliary bucket dovetail comprising:a plurality of hooks engageable with a wheel post of the turbine rotor, the hooks extending in an axial direction relative to the turbine rotor; and a pocket machined in a tangential face of the dovetail, wherein the pocket is defined by a pocket region encompassing at least one of the plurality of hooks. 2. A turbine bucket dovetail for securing buckets in a turbine rotor, the turbine bucket dovetail comprising:a plurality of hooks engageable with a wheel post of the turbine rotor, the hooks extending in an axial direction relative to the turbine rotor; and a pocket machined in a tangential face of the dovetail, wherein the pocket is defined by a pocket region encompassing each of the plurality of hooks. 3. A turbine bucket dovetail according to claim 1, comprising three hooks engageable with each side of the wheel post, wherein a depth of the pocket is between 0.180-0.210 inches.4. A turbine bucket dovetail according to claim 3, wherein the depth of the pocket is about 0.180 inches.5. A turbine bucket dovetail according to claim 1, comprising four hooks engageable with each side of the wheel post, wherein a depth of the pocket is between 0.220-0.250 inches.6. A turbine bucket dovetail according to claim 5, wherein the depth of the pocket is about 0.220 inches.7. A turbine rotor comprising:a rotatable wheel post including a wheel post dovetail with a gate opening; and a plurality of turbine buckets each secured to the wheel post dovetail via a turbine bucket dovetail, the plurality of turbine buckets including a closure bucket at the gate opening and a pair of auxiliary buckets sandwiching and securing the closure bucket via a cross key, wherein the auxiliary buckets each comprise: a plurality of hooks engageable with the wheel post, the hooks extending in an axial direction relative to the turbine rotor, and a pocket machined in a tangential face of the dovetail, wherein the pocket is defined by a pocket region encompassing at least one of the plurality of hooks. 8. A turbine rotor according to claim 7, wherein the auxiliary buckets and the closure bucket comprise a cross-key groove shaped such that a cross-key hole is formed when the auxiliary buckets are disposed adjacent the closure bucket for receiving the cross key, the cross-key groove in the auxiliary buckets being formed in said tangential face of the dovetail.9. A turbine rotor according to claim 7, wherein the pocket of the auxiliary buckets is defined by a pocket region encompassing each of the plurality of hooks.10. A turbine rotor according to claim 7, wherein the auxiliary buckets comprise three hooks engageable with each side of the wheel post, wherein a depth of the pocket is between 0.180-0.210 inches.11. A turbine rotor according to claim 10, wherein the depth of the pocket is about 0.180 inches.12. A turbine rotor according to claim 7, wherein the auxiliary buckets comprise four hooks engageable with each side of the wheel post, wherein a depth of the pocket is between 0.220-0.250 inches.13. A turbine rotor according to claim 12, wherein the depth of the pocket is about 0.220 inches.14. A method of constructing a turbine auxiliary bucket dovetail for securing closure buckets in a turbine rotor, the method comprising:forming a plurality of hooks engageable with a wheel post of the turbine rotor, the hooks extending in an axial direction relative to the turbine rotor; and machining a pocket in a tangential face of the dovetail, wherein the pocket is defined by a pocket region encompassing at least one of the plurality of hooks.