Fan Containment case for gas turbine engines
AssigneeUnited Technologies Corporation
InventorMark W. Costa
Life of this patent
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Abstract
A fan section for a gas turbine engine according to an example of the present disclosure includes, among other things, a fan containment case assembly that has an outer case extending about an axis, and a thermally conforming liner assembly radially inward of the outer case. The liner assembly has a shell, a wrap radially outward of the shell, and a ballistic liner between the outer case and the wrap. The wrap has a first fiber construction, and the ballistic liner has a second fiber construction that differs from the first fiber construction in stiffness.
Claims20
A fan section for a gas turbine engine comprising:
- a fan containment case assembly including:
- an outer case extending about an axis;
- a thermally conforming liner assembly radially inward of the outer case, the liner assembly including a shell;
- a wrap radially outward of the shell;
- and
- a ballistic liner between the outer case and the wrap;
- wherein the wrap has a first fiber construction, the ballistic liner has a second fiber construction that differs from the first fiber construction in stiffness, the wrap directly contacts an outer diameter of the shell, and the first fiber construction of the wrap is made of substantially non-impregnated fibers.
A gas turbine engine comprising:
- a fan including a plurality of fan blades rotatable about an engine longitudinal axis;
- a compressor section;
- a turbine section driving the fan;
- and
- a fan containment case assembly comprising:
- an outer case extending about the engine longitudinal axis;
- a thermally conforming liner assembly radially inward of the outer case, the liner assembly including a shell;
- a wrap between the outer case and the shell, at least partially surrounding the plurality of fan blades, and made of substantially non-impregnated fibers;
- and
- a ballistic liner between the outer case and the wrap.
A gas turbine engine comprising:
- a fan including a plurality of fan blades rotatable about an engine longitudinal axis;
- a compressor section;
- a turbine section driving the fan;
- and
- a fan containment case assembly comprising:
- an outer case extending about the engine longitudinal axis;
- a thermally conforming liner assembly radially inward of the outer case, the liner assembly including a shell;
- a wrap between the outer case and the shell, at least partially surrounding the plurality of fan blades, and made of substantially non-impregnated fibers;
- and
- wherein the outer case is made of a composite material.
A method of assembling a fan containment case comprising:
- attaching a ballistic liner to an inner diameter of an outer case;
- preparing a thermally conforming liner assembly, including attaching a wrap to an outer diameter of a shell, the wrap made of substantially non-impregnated fibers;
- and
- positioning the thermally conforming liner assembly radially inward of the ballistic liner.
Dependencies are inferred from the claim text.