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A method of repairing a gas turbine engine compressor blade airfoils includes machining away airfoil material along leading and trailing edges and a radially outer tip of the airfoil to form leading edge, trailing edge, and tip cut-backs. Then beads of welding material are welded onto the leading ed

A method of repairing a gas turbine engine compressor blade airfoils includes machining away airfoil material along leading and trailing edges and a radially outer tip of the airfoil to form leading edge, trailing edge, and tip cut-backs. Then beads of welding material are welded onto the leading edge, trailing edge, and tip cut-backs. Then some of the weld material is machined away from the weld bead to obtain desired finished dimensions of the leading and trailing edges and radially outer tip. Blade material along only radially outermost portions of the leading and trailing edges extending from the tip towards a base of the airfoil is machined away. A rounded corner is formed between the leading edge and trailing edge cut-backs and unmachined portions of the airfoil between the outermost portions of the leading and trailing edges and the base of the airfoil.

대표청구항 ▼

A method of repairing a gas turbine engine compressor blade airfoils includes machining away airfoil material along leading and trailing edges and a radially outer tip of the airfoil to form leading edge, trailing edge, and tip cut-backs. Then beads of welding material are welded onto the leading ed

A method of repairing a gas turbine engine compressor blade airfoils includes machining away airfoil material along leading and trailing edges and a radially outer tip of the airfoil to form leading edge, trailing edge, and tip cut-backs. Then beads of welding material are welded onto the leading edge, trailing edge, and tip cut-backs. Then some of the weld material is machined away from the weld bead to obtain desired finished dimensions of the leading and trailing edges and radially outer tip. Blade material along only radially outermost portions of the leading and trailing edges extending from the tip towards a base of the airfoil is machined away. A rounded corner is formed between the leading edge and trailing edge cut-backs and unmachined portions of the airfoil between the outermost portions of the leading and trailing edges and the base of the airfoil. and said saddle section of said pillowcase, can be at least partially everted and positioned within said plain end of said pillowcase and said two sides of said reversible fastening mechanism system joined to capture and hold the at least partially everted collar end flap of said pillowcase and the granular fill material in said plain end of said pillowcase. 2. The convertible neck pillow as in claim 1, wherein the reversible fastening mechanism system is a reversible zipper system. 3. The convertible neck pillow as in claim 1, wherein the reversible fastening mechanism system is a button and button hole system. 4. The convertible neck pillow as in claim 1, wherein the reversible fastening mechanism system is a hook and loop system. 5. The convertible neck pillow as in claim 1, wherein the reversible fastening mechanism system is a projection and projection receiving snap system. 6. The convertible neck pillow as in claim 1, wherein said granular fill material is buckwheat hulls. 7. A convertible neck pillow comprising: a pillowcase enclosing a particular volume of a granular fill material; wherein said pillowcase includes a collar end and a plain end, with two sides of a reversible fastening mechanism system disposed between said collar end and said plain end, wherein said pillowcase at said collar end includes two tubular collar sections extending approximately in the same direction with a saddle section sized to receive the neck of a person extending between the two tubular collar sections; wherein the size of said pillowcase is such that when said granular fill material is positioned to substantially fill said collar end of said pillowcase, said two tubular collar sections of said pillowcase and said saddle section, are substantially full of granular material, while pillowcase material forming a plain end flap of said pillowcase is at least partially everted and positioned within said collar end of said pillowcase and said two sides of said reversible fastening mechanism system joined to capture and hold the at least partially everted plain end flap of said pillowcase and the granular fill material in said collar end of said pillowcase; when said granular fill material is positioned to substantially fill said plain end of said pillowcase, said plain end of said pillowcase is substantially full of granular material, while pillowcase material forming a collar end flap of said pillowcase is at least partially everted and positioned within said plain end of said pillowcase and said two sides of said reversible fastening mechanism system joined to capture and hold the at least partially everted collar end flap of said pillowcase and the granular fill material in said plain end of said pillowcase. 8. The convertible neck pillow as in claim 7, wherein the reversible fastening mechanism system is a reversible zipper system. 9. The convertible neck pillow as in claim 7, wherein the reversible fastening mechanism system is a button and button hole system. 10. The convertible neck pillow as in claim 7, wherein the reversible fastening mechanism system is a hook and loop system. 11. The convertible neck pillow as in claim 7, wherein the reversible fastening mechanism system is a projection and projection receiving snap system. 12. The convertible neck pillow as in claim 7, wherein said granular fill material is buckwheat hulls. 13. A method of converting a neck pillow to a plain pillow comprising the steps of releasing a plain end flap of a pillowcase from its partially everted configuration within a pillowcase of said pillow by opening a reversible fastening mechanism system disposed between a collar end and a plain end; causing a fill of said pillow to flow from a set of two tubular collar sections which extend approximately in the same direction on two sides of a neck saddle portion of said pillowcase in a collar end of said pillowcase to a plain end of said pillowc