摘要:
A manufacturing process is provided that includes steps of: providing a panel comprising a core connected to a first skin, wherein. the panel is configured with a plurality of cavities extending through the core to the first skin; partially forming a first perforation in the first skin using a laser beam; operating a sensor to sense optical emissions produced during the partial forming of the first perforation; and determining, based on an output of the sensor, whether to: continue formation of the first perforation in the first skin; or terminate formation of the first perforation in the first skin.
摘要:
Acoustic panels and methods for manufacturing acoustic panels are provided. In one such method, a core structure is provided between and bonded to a top skin and a septum. A plurality of perforations are formed in the top skin using an energy beam device. A plurality of perforations are formed in the septum through the top skin holes using the energy beam device. A plurality of cavities in the core structure fluidly couple at least some of the perforations in the top skin with at least some of the perforations in the septum.
摘要:
An acoustic liner that may be for a turbofan engine includes a first panel that may be non-permeable and a permeable panel spaced from the first panel. A non-permeable wall located between the first panel and the permeable panel faces in a first direction away from the first panel and a non-permeable wall, also between the panels, faces in a second direction away from the first panel and traversing the first direction. The liner may further include a plurality of sidewalls spaced from one-another, extending between the panels, and through the walls.
摘要:
A process is provided for forming a plurality of apertures in a fiber-reinforced composite object using a laser. The apertures include at least a first aperture and a second aperture. During the process, a scanner head of the laser is operated from a location to selectively scan a laser beam over the object to form a first portion of the first aperture and to form a first portion of the second aperture. The scanner head is also operated from the location to selectively scan the laser beam over the object to form a second portion of the first aperture and to form a second portion of the second aperture.
摘要:
Acoustic panels and methods for manufacturing acoustic panels are provided. In one such method, a core structure is provided between and bonded to a top skin and a septum. A plurality of perforations are formed in the top skin using an energy beam device. A plurality of perforations are formed in the septum through the top skin holes using the energy beam device. A plurality of cavities in the core structure fluidly couple at least some of the perforations in the top skin with at least some of the perforations in the septum.
摘要:
A nacelle is disclosed. The nacelle may include an inner fixed structure (“IFS”) comprising a first half, the first half comprising a central barrel portion, wherein the first half includes a first member that extends radially outward from the central barrel portion and a second member that extends radially outward from the central barrel portion radially opposite the first member, a first support structure overlaid by a first composite material that extends axially along a confluence between the central barrel portion and the first member, the first support structure configured to contact a second half comprising a second central barrel portion, and a second support structure overlaid by a second composite material that extends axially along the confluence between the central barrel and the second member, the second support structure configured to contact the second half.
摘要:
An inner fixed structure of a thrust reverser includes an inner skin, an outer skin, a cellular core disposed between the inner skin and the outer skin, and at least one crack and delamination stopper extending radially between the inner skin and the outer skin.
摘要:
A nacelle may comprise a noise suppressing structure. The noise suppressing structure may comprise a plurality of noise suppressing cells situated between a perforated layer of material and a non-perforated layer of material. The plurality of noise suppressing cells may contact the perforated layer of material and the non-perforated layer of material at an acute angle (e.g., between twenty and seventy-five degrees) such that the plurality of noise suppressing cells are non-orthogonal to the perforated layer of material and the non-perforated layer of material. Further, each of the plurality of noise suppressing cells may comprise a hexagonal cross-sectional profile. Further still, the noise suppressing structure may comprise a support structure comprising a plurality of support members, wherein the plurality of noise suppressing cells are situated within the support structure.
摘要:
Systems and methods for detecting damage in composite components are disclosed. A first attachment feature and a second attachment feature may be coupled to a composite component. A transmitting device may be coupled to the first attachment feature. A receiving device may be coupled to the second attachment feature. A signal may be transmitted from the transmitting device, through the first attachment feature, through the composite component, and through the second attachment feature to the receiving device. The signal may be analyzed to detect damage in the composite component.
摘要:
A nacelle is disclosed. The nacelle may include an inner fixed structure (“IFS”) comprising a first half, the first half comprising a central barrel portion, wherein the first half includes a first member that extends radially outward from the central barrel portion and a second member that extends radially outward from the central barrel portion radially opposite the first member, a first support structure overlaid by a first composite material that extends axially along a confluence between the central barrel portion and the first member, the first support structure configured to contact a second half comprising a second central barrel portion, and a second support structure overlaid by a second composite material that extends axially along the confluence between the central barrel and the second member, the second support structure configured to contact the second half.