| 摘要 |
PROBLEM TO BE SOLVED: To provide a divergent flap for a gas turbine engine for restricting plane detection. SOLUTION: A divergent flap assembly 26 of a gas turbine engine is provided with a hot sheet 38, a backbone structure 40 for supporting the hot sheet, and a plow portion 46 fixed to the backbone structure 40 to bridge the gap between the hot sheet 38 and an external flap 24. The plow portion 46 is fabricated from CMC material, and has external geometry to complement and substantially continue geometry of the external flap 24 to minimize plane detection. The plow portion 46 is installed on the backbone structure 40 such that when the backbone structure 40 thermally expands, the plow portion 46 is shifted to minimize an offset between a trailing edge 58 of the hot sheet and the plow portion 46. The plow portion 46 is fixed to the backbone structure 40 by a plurality of fasteners 94 composed to minimize thermal stresses. COPYRIGHT: (C)2006,JPO&NCIPI
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