时尚汽车_汽车生活移动版

Referring to FIG. 2, the segment portion 102 of the blade track 100 is structured such that the radially-facing inner surface 108 is curved in a circumferential direction to accommodate rotation of the turbine blades and to ensure that an adequate blade clearance is maintained. In one embodiment, the radially-facing inner surface 108 forms an arc-shaped surface. Additionally, the segment body 106 has a pair of opposite circumferentially-facing surfaces 202 positioned at opposite ends of the radially-facing inner surface 108. In another embodiment, each of the circumferentially-facing surfaces 202 extends from the first axially-facing surface 112 to the second axially-facing surface 114. As shown in FIG. 2, the transition region 116 of the attachment portion 104 can be structured to form a generally arcuate transition surface 204 extending from the radially-facing outer surface 110 to a circumferentially-facing surface 206 of the attachment portion 104. The attachment termination surface 126 of the attachment portions 104 can also be curved in the circumferential direction to form an arc-shaped surface corresponding to that of the radially-facing inner surface 108. Additionally, the radial length of the extension region 118 is substantially constant along the circumferential direction. Similarly, the radial length of the coupling region 120 is substantially constant along the circumferential direction. Accordingly, the axially-opposite mating surfaces 124 of the attachment portion 104 may have a generally concave form.

The circumferentially-facing surfaces 206 of the attachment portion 104 can extend across the extension region 118 and the coupling region 120. As exemplarily illustrated in FIG. 2, the opposite circumferentially-facing surfaces 206 are substantially planar. However, it should be appreciated that at least a portion of one or both of the circumferentially-facing surfaces 206 can be curved or curvilinear. In one embodiment, the circumferentially-facing surfaces 206 of the attachment portion 104 can be circumferentially spaced apart from an adjacent circumferentially-facing surface 202 of the segment body 106 along the circumferential direction by a distance d. In another embodiment, the length (unlabeled) of the attachment portions 104 at the radially-facing outer surface 110 of the segment body 106 along the circumferential direction (i.e., the circumferential length of the transition region 116 at its widest point) is greater than the width w1 of the attachment portion 104 at the radially-facing outer surface 110 of the segment body 106. With regard to the discussion of the attachment portion 104 set forth above with respect to FIG. 2, it should be appreciated that such discussion applies to both of the attachment portions 104a and 104b. However, it should be further appreciated that, in other embodiments, the attachment portions 104a and 104b can be constructed or otherwise structured differently from one another.