초록 ▼

A rotor blade for a rotor assembly which has a laterally extending shroud is disclosed. Various construction details and design techniques for the shroud which reduce the weight of the blade and increase the cyclic fatigue life of both the rotor blade and an associated component are developed. The s

A rotor blade for a rotor assembly which has a laterally extending shroud is disclosed. Various construction details and design techniques for the shroud which reduce the weight of the blade and increase the cyclic fatigue life of both the rotor blade and an associated component are developed. The shroud of the rotor blade is contoured in the lateral direction for nearly uniform stress distribution.

대표청구항 ▼

For a rotor blade of the type used in gas turbine engines which has an airfoil disposed about a spanwisely extending axis and a shroud extending laterally from the airfoil, the improvement which comprises: a shroud having a laterally outward portion having a contact surface which adapts the rotor bl

For a rotor blade of the type used in gas turbine engines which has an airfoil disposed about a spanwisely extending axis and a shroud extending laterally from the airfoil, the improvement which comprises: a shroud having a laterally outward portion having a contact surface which adapts the rotor blade to engage a contact surface on an adjacent shroud of an adjacent rotor blade in the installed condition in the engine, a laterally inward portion extending between and integrally joined to the laterally outward portion and the airfoil for providing support to the laterally outward portion; wherein said inward portion of the shroud has a geometric contour, said geometric contour having dimensions that cause the inward portion of the shroud to exhibit a maximum fiber unit stress in a rotational force field that is nearly uniform throughout the lateral length of the inward portion of the shroud.