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A multi-layer ceramic matrix composite structure (40) having a plurality of fiber-reinforced cooling passages (42) formed therein. The cooling passages are formed by the removal of a fugitive material (24). The fugitive material is part of a wrapped fugitive material structure (28) containing a laye

A multi-layer ceramic matrix composite structure (40) having a plurality of fiber-reinforced cooling passages (42) formed therein. The cooling passages are formed by the removal of a fugitive material (24). The fugitive material is part of a wrapped fugitive material structure (28) containing a layer of reinforcing ceramic fibers (26) that is used to lay-up the multi-layer structure. An intermediate layer of ceramic fabric56may be placed alternately over and under the wrapped fugitive material structure to separate the cooling passages into alternating upper (54) and lower (52) cooling passages. The transversely oriented fibers surrounding the cooling passages serve to increase the interlaminar strength of the structure when compared to prior art designs. An airfoil member (112) incorporating such reinforced integral cooling passages (120) is provided.

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1. A multi-layer ceramic matrix composite structure comprising: a top layer of ceramic matrix composite material; a bottom layer of ceramic matrix composite material; a plurality of hollow ceramic matrix composite structures each defining a void; and an intermediate layer of ceramic matri

1. A multi-layer ceramic matrix composite structure comprising: a top layer of ceramic matrix composite material; a bottom layer of ceramic matrix composite material; a plurality of hollow ceramic matrix composite structures each defining a void; and an intermediate layer of ceramic matrix composite material disposed between the top layer and the bottom layer; the intermediate layer disposed alternately over and under adjacent hollow ceramic matrix composite structures to vertically displace adjacent voids. 2. A green body ceramic matrix composite structure comprising: a top layer of ceramic matrix impregnated ceramic fibers; a bottom layer of ceramic matrix impregnated ceramic fibers; a plurality of fiber-wrapped fugitive material structures extending in a longitudinal direction between the top layer and the bottom layer, each of the fiber-wrapped fugitive material structures comprising fugitive material wrapped with a layer of ceramic matrix impregnated fiber; and an intermediate layer of ceramic matrix impregnated ceramic fibers disposed between the top layer and the bottom layer; the intermediate layer being disposed alternately aver and under adjacent fiber-wrapped fugitive material structures to vertically displace adjacent fiber-wrapped fugitive material structures. 3. A ceramic matrix composite structure comprising: a multi-layer ceramic matrix composite material; a layer of ceramic thermal insulating material disposed on the multi-layer ceramic matrix composite material; and a cooling passage formed in the multi-layer ceramic matrix composite material, the cooling passage having a longitudinal axis extending in a direction parallel to a plane of a layer of the multi-layer ceramic matrix composite material, the cooling passage bounded by a layer of ceramic matrix composite material having fibers disposed around the longitudinal axis; wherein the cooling passage has an outlet end extending through the layer of ceramic thermal insulating material to deliver the cooling fluid to a hot side of the ceramic matrix composite structure. 4. A ceramic matrix composite structure comprising: a layer of ceramic matrix composite material having an inner surface defining a central volume; a layer of ceramic thermal insulating material disposed over an outer surface of the layer of ceramic matrix composite material, the layer of ceramic thermal insulating material defining an airfoil; a cooling passage extending from an inlet end at the inner surface of the layer of ceramic matrix composite material, through a portion of the layer of ceramic matrix composite material, through a thickness of the layer of ceramic thermal insulating material, to an outlet end at the outer surface of the layer of ceramic thermal insulating material for the passage of a cooling fluid from the central volume to exterior of the airfoil; the cooling passage defined and reinforced along at least a portion of its length by a reinforcing layer of ceramic matrix composite material embedded within the layer of ceramic matrix composite material. 5. The structure of claim 4, wherein the cooling passage outlet end is disposed along a trailing edge of the airfoil.6. A ceramic matrix composite structure comprising: a layer of ceramic matrix composite material having a cooled side surface exposed to a flow of a cooling fluid and having a hat side surface opposed the cooled side surface; a cooling passage having a portion extending through the ceramic matrix composite material below the hot side surface, and the cooling passage further comprising an Inlet end extending across a thickness of the layer of ceramic matrix composite material to the cooled side surface for receiving the flow of cooling fluid. 7. The ceramic matrix composite structure of claim 6, further comprising: a layer of ceramic thermal insulating material disposed on the hot side surface; the cooling passage further comprising an outlet end ext ending through a thickness of the layer of ceramic thermal insulating material to the hot side surface for exhausting the flow of cooling fluid. 8. The ceramic matrix composite structure of claim 6, wherein the portion of the cooling passage extending through the ceramic matrix composite material below the hot side surface is reinforced by a layer of ceramic matrix composite material disposed around a longitudinal axis of the portion of the cooling passage.9. A ceramic matrix composite structure comprising: a layer of ceramic matrix composite material having a hot side surface; a layer of ceramic thermal insulating material disposed on the hot side surface; a cooling passage having a portion extending through the ceramic matrix composite material below the hot side surface for directing a flow of cooling fluid, and the cooling passage further comprising an outlet end extending across a thickness of the layer of ceramic thermal insulating material to the hot side surface for exhausting the flow of cooling fluid. 10. The ceramic matrix composite structure of claim 9, wherein the portion of the cooling passage extending through the ceramic matrix composite material below the hot side surface is reinforced by a layer of ceramic matrix composite material disposed around a longitudinal axis of the portion of the cooling passage.