| 摘要 |
PROBLEM TO BE SOLVED: To provide a variable stator vane assembly for a gas turbine engine. SOLUTION: This variable stator vane assembly (10) includes a variable-stator-vane airfoil (12), an arcuate forward shroud (14), and an arcuate aft shroud (16). The airfoil (12) can be located inside a compressor of the gas turbine engine. The airfoil (12) has a vane stem (22) having a wear-resistant coating, and the vane stem (22) projects radially inward when located inside the compressor. The arcuate forward shroud (14) has a first surface groove having a wear-resistant coating, and the arcuate aft shroud (16) has a second surface groove having a wear-resistant coating. The arcuate forward and aft shrouds (14), (16) are capable of being positioned with the first and second surface grooves together defining a hole containing the vane stem (22). The wear-resistant coating of the vane stem (22) is in contact, apart from any intervening lubricant, with the wear-resistant coatings of the first and second surface grooves when the vane stem (22) is rotating in the hole. COPYRIGHT: (C)2007,JPO&INPIT
|
