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公开(公告)号：JPH11324615A
公开(公告)日：1999-11-26
申请号：JP11186099
申请日：1999-04-20
Applicant: UNITED TECHNOLOGIES CORP
Inventor： COSTA MARK W , FOOSE ANDREW S , KORN NATHAN D , KOWZA JAN B , LOPARDI WENDY P , WELCH DOUGLAS A
Abstract: PROBLEM TO BE SOLVED: To provide an invasion-resistant fan casing for a turbine engine. SOLUTION: Broken pieces separated from a fan blade 16 are housed by a fan casing 12 for a turbine engine of invasion resistance property. The casing is provided with a supporting body case 14 invaded easily, and an invasion enable cover 32 for enclosing a shock region 1 of a supporting body cover 34 and which is offset from the shock region. A housing cover 36 encloses both of the invasion enable cover 32 and the supporting body cover 34. The housing cover 36 is formed as aromatic polyamide fiber woven fabric, and the supporting body cover 34 is formed as aggregate cell alley.
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公开(公告)号：DE69931554T2
公开(公告)日：2007-01-18
申请号：DE69931554
申请日：1999-04-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： COSTA MARK W , FOOSE ANDREW S , KORN NATHAN D , KOWZA JAN B , LOPARDI WENDY P , WELCH DOUGLAS A
Abstract: A penetration resistant turbine engine fan casing (12) for containing separated fragments of a fan blade (16) includes a penetration susceptible support case (14), a penetrable covering (32) circumscribing an impact zone (I) of the support case and an optional collapsible support covering (34) circumscribing the case but axially offset from the impact zone. A containment covering (36) circumscribes both the penetrable covering (32) and the support covering (34). In a preferred embodiment, the coverings are aromatic polyamide fiber fabrics and the support covering is a collapsible cellular array. In operation, a detached fragment of a fan blade penetrates through the case (14) and the penetrable covering (32), and is plastically deformed by the penetrable covering to reduce the fragment's potential for damaging the containment covering (36). The containment covering intercepts the deformed fragment, confining it to a predetermined radial envelope bounded by the inner surface (58) of a nacelle (52). The impact forces arising from a separated blade fragment cause the containment fabric to collapse the cellular array (32) and momentarily detension the containment fabric to maximize its penetration resistance.
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公开(公告)号：DE69931554D1
公开(公告)日：2006-07-06
申请号：DE69931554
申请日：1999-04-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： COSTA MARK W , FOOSE ANDREW S , KORN NATHAN D , KOWZA JAN B , LOPARDI WENDY P , WELCH DOUGLAS A
Abstract: A penetration resistant turbine engine fan casing (12) for containing separated fragments of a fan blade (16) includes a penetration susceptible support case (14), a penetrable covering (32) circumscribing an impact zone (I) of the support case and an optional collapsible support covering (34) circumscribing the case but axially offset from the impact zone. A containment covering (36) circumscribes both the penetrable covering (32) and the support covering (34). In a preferred embodiment, the coverings are aromatic polyamide fiber fabrics and the support covering is a collapsible cellular array. In operation, a detached fragment of a fan blade penetrates through the case (14) and the penetrable covering (32), and is plastically deformed by the penetrable covering to reduce the fragment's potential for damaging the containment covering (36). The containment covering intercepts the deformed fragment, confining it to a predetermined radial envelope bounded by the inner surface (58) of a nacelle (52). The impact forces arising from a separated blade fragment cause the containment fabric to collapse the cellular array (32) and momentarily detension the containment fabric to maximize its penetration resistance.
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