摘要:
A low pressure turbine shroud (36) includes an arcuate backsheet (38) having opposite mounting rails (40,42) for engaging a surrounding annular case (32). The backsheet includes a thicker blade containment shield (44) extending between the rails (40, 42) in a unitary construction. And, a honeycomb rub strip (46) is fixedly joined to the backsheet (38) between the rails (40, 42).
摘要:
An improved containment structure for use with turbomachinery, such as turbofan engines. A casing (80) is provided with at least one impact resistant section (78) of a thickness sufficient to resist being pierced upon impact by a blade. The impact resistant section (78) has a smoothly contoured thickness along its axial length and is free from features likely to cause a local failure in the event of impact by a blade released from a rotating disk.
摘要:
An integrated cable support (70), the support (70) comprising a grommet portion (78,74) for enclosing at least one first elongated cable (82) and a bracket portion (71) for securing at least one second elongated cable (81) in spaced and substantially fixed relation to said at least one first elongated cable (82). The at least one first elongated cable (82) and the at least one second elongated cable (81) are in a non-parallel orientation.
摘要:
A fan casing (10) for a gas turbine engine is provided which combines the functions of blade containment and noise suppression. The fan casing has an annular metallic inner shell (14) with a plurality of holes (17) are formed therethrough. An acoustic absorber (39), such as a cellular resonator, is disposed around the inner shell (14).
摘要:
A gas turbine engine strut segment includes a strut (62), which may be hollow, extending radially between co-annular radially inner (64) and outer (66) platforms, axially spaced apart inner platform flanges (68) extending radially inwardly from the inner platform, and axially spaced apart outer platform flanges (70) extending radially outwardly from the inner platform. At least one inner set of coaxial tapered inner holes (72) extend axially through the inner platform flanges (68) and at least one outer set of coaxial tapered outer holes (74) extend axially through the outer platform flanges (70). The inner set of coaxial inner holes define an inner conical surface (76) and the outer set of coaxial outer holes define an outer conical surface (80). Each of the axial spaced apart platform flanges may be circumferentially continuous or scalloped having spaced circumferentially apart lugs. The strut may have two inner sets of coaxial tapered inner and outer holes extending axially through the inner and outer platform flanges, respectively.
摘要:
A fan casing (10) for a gas turbine engine is provided which combines the functions of blade containment and noise suppression. The fan casing has an annular metallic inner shell (14) with a plurality of holes (17) are formed therethrough. An acoustic absorber (39), such as a cellular resonator, is disposed around the inner shell (14).
摘要:
A centerbody (120) for a gas turbine engine includes a thermal control system (140) which minimizes the thermal stresses between the centerbody (120) and a plurality of stiffeners (80). The centerbody stiffeners extend radially inward from a centerbody shell (122). A cavity (138) is defined within each centerbody stiffener. The thermal control system includes a plurality of openings (142) circumferentially disposed around the centerbody. Each opening extends through the centerbody shell into each cavity. The openings include pairs of entrance openings (144) and exit openings (146) which permit circumferential flow to develop within the centerbody cavity.