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公开(公告)号：DE602005008119D1
公开(公告)日：2008-08-28
申请号：DE602005008119
申请日：2005-01-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： WHITESELL DANIEL J , PALAZZINI CHRISTOPHER M , WEISSE MICHAEL A
Abstract: A method for making a hollow fan blade includes the steps of: forming a plurality of ribs (42) on a first substrate (31), the first substrate (31) including cavities (40) on either side of each of the plurality of ribs; abutting the plurality of ribs (42) on the first substrate (31) with a second substrate (31) to form a hollow fan blade (30); and forming the hollow fan blade (30) into an airfoil shape while pressure inside the cavities (40) is substantially ambient pressure.
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Patent Agency Ranking
公开(公告)号：AT397713T
公开(公告)日：2008-06-15
申请号：AT05250322
申请日：2005-01-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： WEISSE MICHAEL A , PALAZZINI CHRISTOPHER M , OWEN MICHAEL D , WHITESELL DANIEL J
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公开(公告)号：AT397512T
公开(公告)日：2008-06-15
申请号：AT05250319
申请日：2005-01-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： OWEN WILLIAM D , WEISSE MICHAEL A , WHITESELL DANIEL J
Abstract: Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves (30a;30b). Each detail half (30a) has a plurality of cavities (40) and ribs (70) machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming operation. In the present invention, the ribs (70) are oriented and biased to provide stiffness as needed in different sections of the fan blade with smooth transitions between regions. In particular, ribs (72a) in a first region (A) of the detail substrate (61) are formed so as not to be parallel to ribs (72c) in a second region (B) of the substrate. The result is a blade with good protection from a wide spectrum of external threats.
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公开(公告)号：AT401161T
公开(公告)日：2008-08-15
申请号：AT05250320
申请日：2005-01-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： WHITESELL DANIEL J , PALAZZINI CHRISTOPHER M , WEISSE MICHAEL A
Abstract: A method for making a hollow fan blade includes the steps of: forming a plurality of ribs (42) on a first substrate (31), the first substrate (31) including cavities (40) on either side of each of the plurality of ribs; abutting the plurality of ribs (42) on the first substrate (31) with a second substrate (31) to form a hollow fan blade (30); and forming the hollow fan blade (30) into an airfoil shape while pressure inside the cavities (40) is substantially ambient pressure.
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公开(公告)号：DE602005007274D1
公开(公告)日：2008-07-17
申请号：DE602005007274
申请日：2005-01-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： WEISSE MICHAEL A , PALAZZINI CHRISTOPHER M , OWEN MICHAEL D , WHITESELL DANIEL J
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公开(公告)号：DE602005007272D1
公开(公告)日：2008-07-17
申请号：DE602005007272
申请日：2005-01-24
Applicant: UNITED TECHNOLOGIES CORP
Inventor： OWEN WILLIAM D , WEISSE MICHAEL A , WHITESELL DANIEL J
Abstract: Hollow fan blades for turbo fan gas turbine engines are formed of two separate detail halves (30a;30b). Each detail half (30a) has a plurality of cavities (40) and ribs (70) machined out to reduce weight. These detail halves are subsequently bonded and given an airfoil shape in the forming operation. In the present invention, the ribs (70) are oriented and biased to provide stiffness as needed in different sections of the fan blade with smooth transitions between regions. In particular, ribs (72a) in a first region (A) of the detail substrate (61) are formed so as not to be parallel to ribs (72c) in a second region (B) of the substrate. The result is a blade with good protection from a wide spectrum of external threats.
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