Elasto-viscoplastic Numerical Analysis of a Deep Excavation in an Osaka Soft Clay Deposit Using the Open-cut Method

Field replacement of a damaged outlet guide vane for redirecting helical airflow into axial flow in a turbofan engine is facilitated by utilizing a replacement vane assembly that includes an elongated replacement vane having first and second mounting platforms mounted at opposite ends of the vane. The first mounting platform is fixedly secured to the inner end of the vane and the second mounting platform is mounted so as to be movable from the outer end of the vane toward the inner end thereof. With the second mounting platform at the outer end of the vane, that mounting platform constitutes a substantial bulge which is positioned so as to limit the ability to maneuver the vane in a confined space. By moving the outer mounting platform toward the inner end of the vane, it is easier to maneuver the vane in a confined space and thereby facilitate entry of the outer mounting platform over the lip of and into the outer annular casing groove that partially defines the operating position for the replacement vane.