| 摘要 |
<p>Thermal matching of compounds in a gas turbine engine is achieved by providing the component with the highest rate of thermal expansion with an insulating sheet which is dimpled to contact the surface of the component at discrete spots leaving air spaces in between. The sheet is attached to the component by spot welding at a pre-determined number of areas to provide the necessary heat conducting paths between the insulation and the component to enable the expansion of the component to be matched with that of another component. Seal clearances can be reduced by matching the expansions of seal carrying components in this way.</p> |
