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US 8,998,575 B2Granted
Structural stator airfoil
AssigneeUnited Technologies Corporation
InventorsJohn P. Lucashu, Gregory E. Reinhardt, John C. Ditomasso
Life of this patent
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Abstract
An airfoil comprises a leading edge, a trailing edge, and pressure and suction surfaces defined therebetween. An inner platform is coupled to a root section of the airfoil, with a curvilinear gusset extending along a lower surface of the inner platform, opposite the root section. An outer platform is coupled to a tip section of the airfoil, with a multi-lobed gusset extending along an upper surface of the inner platform, opposite the tip section.
Claims25
An airfoil comprising:
- a leading edge, a trailing edge, and pressure and suction surfaces defined therebetween;
- an inner platform coupled to a root section of the airfoil, the inner platform comprising a curvilinear gusset extending along a lower surface of the inner platform, opposite the root section, wherein the curvilinear gusset extends along a camber line of the airfoil defined in the root section of the airfoil opposite the curvilinear gusset;
- an outer platform coupled to a tip section of the airfoil, the outer platform comprising a multi-lobed gusset extending along an upper surface of the outer platform, opposite the tip section;
- wherein the multi-lobed gusset comprises four legs meeting at a nexus, wherein two of the four legs extend axially forward from the nexus and two of the four legs extend axially aft from the nexus.
1 more element
A vane comprising:
- an airfoil defined between pressure and suction surfaces, the pressure and suction surfaces extending from a leading edge of the airfoil to a trailing edge of the airfoil, the leading and trailing edges extending from a root section of the airfoil to a tip section of the airfoil;
- an inner platform attached to the root section, the inner platform comprising a curvilinear gusset on a lower surface of the inner platform opposite the airfoil, the curvilinear gusset extending along a camber line of the airfoil defined in the root section of the airfoil, opposite the curvilinear gusset, wherein the curvilinear gusset comprises a joint disposed proximate an aft portion of the inner platform, and wherein the joint extends in the circumferential direction and includes an axially oriented bolt hole;
- and
- an outer platform attached to the tip section of the airfoil.
1 more element
A guide vane comprising:
- an airfoil extending from a leading edge to a trailing edge, the leading and trailing edges extending from a root section of the airfoil to a tip section of the airfoil;
- an inner platform attached to the root section of the airfoil, the inner platform comprising a curvilinear gusset extending opposite the airfoil along a camber line defined in the root section;
- and
- an outer platform attached to the tip section of the airfoil, the outer platform comprising a multi-lobed gusset having a nexus positioned opposite a maximum camber point defined in the tip section of the airfoil, wherein the multi-lobed gusset comprises two legs extending axially forward from the nexus on the outer platform and two legs extending axially aft from the nexus on the outer platform.
1 more element
Dependencies are inferred from the claim text.