Abstract:
The present invention is directed toward a suspension system for mounting an exhaust duct liner within an exhaust duct of a gas turbine engine. An exhaust liner suspension system comprises a hanger, a bracket and a coil pin. The hanger comprises a first end for connecting with an exhaust duct and a second end having a hinge pin socket. The bracket comprises a base for connecting with an exhaust duct liner and a pedestal having a hinge pin bore. The coil pin is insertable in the hinge pin socket and the hinge pin bore thereby pivotably connecting the hanger and the bracket. The coil pin also provides a dampened connection between the hanger and the bracket.
Abstract:
A cooled exhaust duct (10) for use in gas turbine engines is provided. The cooled exhaust duct (10) includes an axial centerline (18), a circumference, an annulus (20), and a plurality of radially expandable bands (22). The annulus (20) is disposed between a first wall (24) and a second wall (26), and extends along the axial centerline (18). The first wall (24) is disposed radially inside of the second wall (26). Each of the plurality of radially expandable bands (22) extends circumferentially within the annulus (20). The bands (22) are axially spaced apart from one another. Each band (22) includes a first portion (32) attached to the first wall (24), a second portion (34) attached to the second wall (26) and an intermediate portion (36) connected to the first and second portions (32, 34). The bands (22) create circumferentially extending compartments that inhibit axial travel of the cooling air within the annulus (20).
Abstract:
A turbine engine includes multiple tierod supports. Each of the tierod supports is connected to an inner frame case of the turbine engine via multiple fasteners and at least one self anti-rotating bushing component.
Abstract:
A mid-turbine frame located in a gas turbine engine axially aft of a high-pressure turbine and fore of a low-pressure turbine includes an outer frame case, an inner frame case, and at least a first spoke connecting the outer frame case to the inner frame case. The first spoke includes a tie rod having a first threaded surface and a connector having a second threaded surface. The first and second threaded surfaces overlap partially but not completely.
Abstract:
A gas turbine engine includes a combustor, a first turbine section in fluid communication with the combustor, a second turbine section in fluid communication with the first turbine section, and a mid-turbine frame located axially between the first turbine section and the second turbine section. The mid-turbine frame includes a first frame case, a second frame case, a vane positioned between the first frame case and the second frame case, and a spoke extending through the vane and connecting the first frame case to the second frame case. The spoke includes a tie rod having a first end connected to the first frame case at a keyed connection.
Abstract:
A mid-turbine frame located in a gas turbine engine axially aft of a high-pressure turbine and fore of a low-pressure turbine includes an outer frame case, an inner frame case, and at least a first spoke connecting the outer frame case to the inner frame case. The first spoke is tightened so as to be in tension during substantially all operating conditions of the gas turbine engine.
Abstract:
A borescope plug configuration is disclosed. The borescope plug configuration comprises an inspection path defined through a bore in a first engine structure, a second engine structure, and an opening into the gas path of an engine. The borescope plug configuration further comprises a removable plug for sealing the inspection path. The removable plug is adapted to couple the first engine structure to the second engine structure.
Abstract:
A mid-turbine frame (MTF) system for a gas turbine engine is disclosed. The MTF includes an inner case, an outer case and a fairing sandwiched between the inner and outer cases. The fairing includes an inner ring spaced apart from and coupled to an outer ring by a plurality of hollow struts. The hollow struts accommodate support rods that connect the inner case to the outer case. Further, the hollow struts act as turning vanes for turning the flow of gases passing from a high pressure turbine (HPT) to a low pressure turbine (LPT) for purposes of providing the correct incidence angle to the first vane of the LPT. The outer ring of the fairing includes a plurality of bosses which receive attachment pins that pass through the outer case for correctly locating the fairing with respect to the outer case and for permitting radial expansion in contraction of the fairing.
Abstract:
A turbine engine vane arrangement and a method for manufacturing a turbine engine vane arrangement are provided. The vane arrangement includes a plurality of vane arrangement segments arranged circumferentially around an axial centerline. Each of the vane arrangement segments includes an airfoil that extends radially between a first platform segment and a second platform segment. The first platform segment extends circumferentially between a first mate face and a second mate face. The first mate face of a first of the vane arrangement segments is bonded to the second mate face of a second of the vane arrangement segments.
Abstract:
A gas turbine engine includes a combustor, a first turbine section in fluid communication with the combustor, a second turbine section in fluid communication with the first turbine section, and a mid-turbine frame located axially between the first turbine section and the second turbine section. An oil system includes a first oil system component that houses oil. A first connector mechanically connects the first oil system component to the mid-turbine frame.