Inner bypass duct wall attachment

摘要

A bypass duct of a gas turbine engine has an inner bypass duct wall having a front end portion which is rigidly mounted to an engine core case and a rear end portion which is flexibly mounted to the core case. The flexible mounting between the rear portion of the inner bypass duct wall and the core case allows hot engine areas of the core case to thermally grow and contract relative to the inner bypass duct wall without imposing additional loads on the inner bypass duct wall.

主权项

1. A turbofan engine comprising: an engine core mounted about an axis, the engine core having a core case surrounded by a bypass duct including a radially outer bypass duct wall and a radially inner bypass duct wall defining therebetween an annular bypass passage, a rigid connection between a front end portion of the radially inner bypass duct wall and a corresponding front end portion of the core case, and a flexible connection between a rear end portion of the radially inner bypass duct and a corresponding rear end portion of the core case, the flexible connection allowing the rear end portion of the core case to thermally grow and contract relative to the radially inner bypass duct wall.