초록 ▼

An apparatus (10) and method for removing an abradable material from an interior surface (16) of a fan containment case (14), without requiring removal of the fan containment case (14) from its engine (12). The apparatus (10) and method generally involve adjusting the elevation of a blast head (40)

An apparatus (10) and method for removing an abradable material from an interior surface (16) of a fan containment case (14), without requiring removal of the fan containment case (14) from its engine (12). The apparatus (10) and method generally involve adjusting the elevation of a blast head (40) and centering a horizontal axis of rotation thereof with the fan containment case (14) to position the blast head (40) adjacent the abradable material on the case surface (16). An erosion media is then sprayed with the blast head (40) in a substantially radial direction relative to the horizontal axis of rotation of the blast head (40), such that the erosion media impacts and erodes the abradable material. The blast head (40) is rotated about the horizontal axis of rotation thereof so that the erosion media is sprayed at the abradable material along the entire circumference of the fan containment case (14).

대표청구항 ▼

An apparatus (10) and method for removing an abradable material from an interior surface (16) of a fan containment case (14), without requiring removal of the fan containment case (14) from its engine (12). The apparatus (10) and method generally involve adjusting the elevation of a blast head (40)

An apparatus (10) and method for removing an abradable material from an interior surface (16) of a fan containment case (14), without requiring removal of the fan containment case (14) from its engine (12). The apparatus (10) and method generally involve adjusting the elevation of a blast head (40) and centering a horizontal axis of rotation thereof with the fan containment case (14) to position the blast head (40) adjacent the abradable material on the case surface (16). An erosion media is then sprayed with the blast head (40) in a substantially radial direction relative to the horizontal axis of rotation of the blast head (40), such that the erosion media impacts and erodes the abradable material. The blast head (40) is rotated about the horizontal axis of rotation thereof so that the erosion media is sprayed at the abradable material along the entire circumference of the fan containment case (14). nches apart. 14. The system of claim 13 wherein the wall segments of the wall tie rails extend over the panels from about 0.5 inches to about 2 inches. 15. The forming system of claim 1 wherein the bottom edges of the wall panels are engaged and supported by a footing, and are disposed between a first L-shaped footing bracket and a second L-shaped footing bracket spaced from the first form a distance sufficient to receive concrete or another hardenable material between the forms. 16. The forming systems of claim 15 wherein at least one of L-shaped brackets is mountable on the footing to provide a side form for concrete or other hardenable materials poured adjacent to the footing. 17. The system of claim 16 wherein the concrete or other hardenable materials are poured before the panels are mounted on the footing between the brackets. 18. The forming system of claim 1 wherein a base plate extends from the L-shaped footing brackets engaging and supporting the bottom edges of the wall panels, the base plate extending perpendicularly from the up right portion of the L-shaped brackets, parallel to the horizontal portion of the brackets. 19. The system of claim 1 wherein a second forming system is disposed above a first base system, the top panel edges of the first system adjacent to bottom panel edges of the second system with mounting plates spanning the top panel edges of the first system and the bottom panel edges of the second system, the mounting pl