초록 ▼

A hybrid vane (50) for a gas turbine engine having a ceramic matrix composite (CMC) airfoil member (52) bonded to a substantially solid core member (54). The airfoil member and core member are cooled by a cooling fluid (58) passing through cooling passages (56) formed in the core member. The airfoil

A hybrid vane (50) for a gas turbine engine having a ceramic matrix composite (CMC) airfoil member (52) bonded to a substantially solid core member (54). The airfoil member and core member are cooled by a cooling fluid (58) passing through cooling passages (56) formed in the core member. The airfoil member is cooled by conductive heat transfer through the bond ((70) between the core member and the airfoil member and by convective heat transfer at the surface directly exposed to the cooling fluid. A layer of insulation (72) bonded to the external surface of the airfoil member provides both the desired outer aerodynamic contour and reduces the amount of cooling fluid required to maintain the structural integrity of the airfoil member. Each member of the hybrid vane is formulated to have a coefficient of thermal expansion and elastic modulus that will minimize thermal stress during fabrication and during turbine engine operation.

대표청구항 ▼

A hybrid vane (50) for a gas turbine engine having a ceramic matrix composite (CMC) airfoil member (52) bonded to a substantially solid core member (54). The airfoil member and core member are cooled by a cooling fluid (58) passing through cooling passages (56) formed in the core member. The airfoil

A hybrid vane (50) for a gas turbine engine having a ceramic matrix composite (CMC) airfoil member (52) bonded to a substantially solid core member (54). The airfoil member and core member are cooled by a cooling fluid (58) passing through cooling passages (56) formed in the core member. The airfoil member is cooled by conductive heat transfer through the bond ((70) between the core member and the airfoil member and by convective heat transfer at the surface directly exposed to the cooling fluid. A layer of insulation (72) bonded to the external surface of the airfoil member provides both the desired outer aerodynamic contour and reduces the amount of cooling fluid required to maintain the structural integrity of the airfoil member. Each member of the hybrid vane is formulated to have a coefficient of thermal expansion and elastic modulus that will minimize thermal stress during fabrication and during turbine engine operation. arolek et al., 180/068.2; US-5065814, 19911100, Loeber et al., 165/041; US-5082075, 19920100, Karolek et al., 180/068.2; US-5348114, 19940900, Yamauchi, 180/291; US-5409288, 19950400, Masuda, 296/194; US-5522457, 19960600, Lenz, 165/121; US-5573299, 19961100, Masuda, 296/194; US-6155335, 20001200, Acre et al., 165/041; US-6186583, 20010200, Martin, 296/193.09; US-6196624, 20010300, Bierjon et al., 296/203.02; US-6216810, 20010400, Nakai et al., 180/068.4; US-6237990, 20010500, Barbier et al., 296/187; US-6450276, 20020900, Latcau, 180/068.4; US-6502653, 20030100, Balzer et al., 180/068.4; US-6517146, 20030200, Cheron et al., 296/194 100, Hemsath; US-5099918, 19920300, Bridges et al.; US-5126037, 19920600, Showalter; US-5168927, 19921200, Stegemeier et al.; US-5182792, 19930100, Goncalves; US-5189283, 19930200, Carl, Jr. et al.; US-5190405, 19930300, Vinegar et al.; US-5201219, 19930400, Bandurski et al.; US-5207273, 19930500, Cates et al.; US-5211230, 19930500, Ostapovich et al.; US-5217076, 19930600, Masek; US-5226961, 19930700, Nahm et al.; US-5229102, 19930700, Minet et al.; US-5229583, 19930700, van Egmond et al.; US-5236039, 19930800, Edelstein et al.; US-5255742, 19931000, Mikus; US-5261490, 19931100, Ebinuma; US-5284878, 19940200, Studer et al.; US-5285846, 19940200, Mohn; US-5289882, 19940300, Moore; US-5297626, 19940300, Vinegar et al.; US-5306640, 19940400, Vinegar et al.; US-5316664, 19940500, Gregoli et al.; US-5318116, 19940600, Vinegar et al.; US-5339897, 19940800, Leaute; US-5339904, 19940800, Jennings, Jr.; US-5340467, 19940800, Gregoli et al.; US-5349859, 19940900, Kleppe; US-5366012, 19941100, Lohbeck; US-5388640, 19950200, Puri et al.; US-5388641, 19950200, Yee et al.; US-5388642, 19950200