Improved design—extending the service life of your parts.

Pratt & Whitney Power Systems (PWPS) has designed the rotating components for the hot gas path of the Frame 7FA+e gas turbine. The designs incorporate Pratt & Whitney's extensive high-temperature experience to provide improved total life-cycle costs.

Pratt & Whitney has improved upon the OEM offering by designing parts that minimize oxidation, creep and metal temperature, which ultimately extends part life and reduces operating costs.

Design Advantages

Pratt & Whitney 7FA+e 1st-Stage Blade

• PWA 1437™ directionally solidified alloy and PWA 264™ thermal barrier coating system provide improved creep and oxidation life

• Improved cooling distribution reduces peak metal temperature

• Trailing edge undercut to alleviate trailing-edge coolinghole cracking

• Cooled platform to resolve cracking for high hour andstart (corner box operations) users

Pratt & Whitney 7FA+e 2nd-Stage Blade

• PWA 1432™ equiaxed alloy and PWA 286™ metallic coating system provide improved creep and oxidation life.

• Tip shroud 3D contouring with cutter tooth removed and abradable coating added on shroud to further improve shroud life to meet 72,000-hour cumulative life.

• Cooling distribution improved and peak temperature reduced through additional trailing-edge cooling holes—reducing trailing-edge creep—while not changing total internal cooling flow.

Pratt & Whitney 7FA+e 3rd-Stage Blade

• PWA 1432™ equiaxed alloy and chromide coating system provide improved creep and corrosion life

• Tip shroud 3D contouring with cutter tooth removed and abradable coating added on shroud to further improve shroud life to meet 72,000-hour cumulative life.