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.
Abstract:
PROBLEM TO BE SOLVED: To provide a turbofan engine formed by improving a reduction in engine efficiency due to a gap between a fan tip and a fan case.SOLUTION: A turbofan engine has a fan having a circumferential array of fan blades. A fan case encircles the fan. The turbofan engine includes at least one compressor section, a combustor, and at least one turbine section. The fan case comprises a composite structural member and a metallic member encircled by the composite structural member. The metallic member is mounted on the composite structural member to permit differential thermal expansion proximate the blades.
Abstract:
PROBLEM TO BE SOLVED: To provide a turbofan engine fan case cartridge, in which reduction of engine efficiency accompanying a gap between a distal end part of a fan and a fan case is improved.SOLUTION: A turbofan engine fan case cartridge comprising a metallic member is included. A first honeycomb has an inner diameter (ID) liner and is encircled by a front part of the metallic member. A second honeycomb is encircled by a metallic member at the back of the first honeycomb. A wear strip is encircled by the second honeycomb.
Abstract:
A fan case for a gas turbine engine includes a composite fan containment case having an outer surface, a front and a rear. An attachment flange and a mounting ring are respectively provided on the front and the rear. A bolt attachment is supported on the outer surface. The composite fan containment case has a containment area that is configured to be axially aligned with a fan blade. A ballistic liner is arranged in the containment area.
Abstract:
The present disclosure relates to methods of manufacturing ice panel segments for turbofan engines. An ice panel material may be wrapped around a mandrel. The ice panel material may include an inner fiberglass layer, a plurality of KEVLAR® layers, and an outer fiberglass layer. The ice panel material may be bagged and cured into a rigid molded cylinder. The rigid molded cylinder may be radially cut into ice panel cylinders. The ice panel cylinders may be axially cut into ice panel segments. The ice panel segments may be bonded to an inner surface of a fan case.
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.
Abstract:
A cartridge for a fan case of a gas turbine engine includes an inlet acoustic liner section integrated with a thermally conforming liner section.
Abstract:
A mount for mounting a component to a gas turbine engine is disclosed. The mount may include a central portion that attaches to the component, and a flange circumscribing the central portion and extending to the gas turbine engine, the flange including a fusible region that breaks at a predetermined load. A method for protecting a component mounted to a gas turbine engine is also disclosed. The method may include attaching a mount to a casing of the gas turbine engine, the mount including a fusible region that breaks at a predetermined load. The method may further include attaching the component to the mount. The method may further include the fusible region breaking when the mount experiences the predetermined load, detaching the component from the casing of the gas turbine engine.
Abstract:
A duct liner assembly includes a noise attenuation layer for absorbing noi se energy that is covered by a face sheet. The face sheet includes a seam that is covered by an acoustically active splice. The acoustically active splice includes a plurality of acoustic regions that provide for communication of noise energy to the noise attenuation layer to minimize creation of acoustically dead areas.