US3620641A - Bearing assembly - Google Patents

Bearing assembly Download PDF

Info

Publication number
US3620641A
US3620641A US865942A US3620641DA US3620641A US 3620641 A US3620641 A US 3620641A US 865942 A US865942 A US 865942A US 3620641D A US3620641D A US 3620641DA US 3620641 A US3620641 A US 3620641A
Authority
US
United States
Prior art keywords
dished
portions
panel members
gas turbine
turbine engine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US865942A
Inventor
John Michael Storer Keen
Maurice John Byett
Francis Anthony Weston
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Rolls Royce PLC
Original Assignee
Rolls Royce PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Rolls Royce PLC filed Critical Rolls Royce PLC
Application granted granted Critical
Publication of US3620641A publication Critical patent/US3620641A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02CGAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
    • F02C7/00Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
    • F02C7/20Mounting or supporting of plant; Accommodating heat expansion or creep
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01DNON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
    • F01D25/00Component parts, details, or accessories, not provided for in, or of interest apart from, other groups
    • F01D25/16Arrangement of bearings; Supporting or mounting bearings in casings
    • F01D25/162Bearing supports
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C35/00Rigid support of bearing units; Housings, e.g. caps, covers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16CSHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00Engines or pumps
    • F16C2360/23Gas turbine engines

Definitions

  • a gas turbine engine comprises in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced apart substan tially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said portions being secured to the other of said panel members to brace together and interconnect the panel members.
  • the invention provides a gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said portions being secured to the other of said panel members to brace together and interconnect the panel members.
  • the dished portions may be substantially lozenge shaped.
  • lozenge shaped we mean generally rounded in outline, but not necessarily symmetrical, and this term is intended to include shapes ranging from circular, through oval to markedly elongated or boat shaped.
  • the dished portions each may have major and minor axes, the major axis extending radially on the shaft.
  • the dished portions may be elliptical.
  • At least one panel member may have corrugated portions between the dished portions.
  • the corrugated portions may be constituted by elongated dished portions, the major axis of each elongated dished portion extending radially of the shaft.
  • Said dished portions may be of relatively rounded shape, further dished portions being interposed between the relatively rounded dished portions, and being of relatively elongated shape, each relatively elongated dished portion having a major axis which extends radially of the shaft.
  • each dished portion may be provided in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
  • the dished portions may be secured to the other offset panel members by welding.
  • the said dished portions may be integrally formed in said at least one panel member.
  • Said angularly spaced apart dished portions may be provided in both panels, said portions being arranged in pairs, one from each panel, the portions of each panel having their bases secured together.
  • each said pair of dished portions a connecting member extending between said bases securing them together, said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.
  • bearing support ring there may be an axially extending bearing support ring, said bearing being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
  • FIG. 1 is a diagrammatic view of a gas turbine engine provided with a bearing assembly according to the present invention
  • FIG. 2 is a broken away sectional view of a larger scale of part of the structure of the engine of FIG. 1,
  • FIG. 3 is a broken-away sectional view of a modification
  • FIG. 4 is an axially facing view of another modification
  • FIG. 5 is a section on line 5-5 of FIG. 4,
  • FIG. 6 is a section on line 66 of FIG. 4,
  • FIG. 7 is an axially facing view of another modification
  • FIG. 8 is a section on line 8-8 of FIG. 7.
  • FIG. 1 there is shown a gas turbine jet propulsion engine 10 having an engine casing 11 within which are mounted in flow series a low-pressure compressor 12, a high-pressure compressor 13, combustion equipment 14, a high-pressure turbine 15, a plurality of angularly spaced-apart hollow nozzle guide vanes 16, a low-pressure turbine 17 and an exhaust duct 18.
  • the high-pressure turbine 15 drives the high-pressure compressor 13 by way of a shaft 21 (FIG. 2), while the low-pressure turbine 17 drives the low-pressure compressor 12 by way of shaft 22, a portion of the shaft 21 being mounted concentrically within a portion of the shaft 22.
  • the portion of the shafts 21, 22 are mounted respectively within roller bearings 24, 25 respectively.
  • the bearings 24, 25 are mounted within and supported by a common axially extending bearing support ring 26.
  • the bearing support ring 26 is supported from the fixed cylindrical structure constituted by the engine casing 11, by way of two axially spaced substantially radially extending annular panel members 30, 31 which are welded to the bearing support ring 26 at 32, 33 respectively.
  • the panel members 30, 31 are welded at 34, 35 to a plurality of angularly spaced-apart common struts 36 each of which passes through a respective hollow nozzle guide vane 16 and is bolted to the engine casing 11.
  • fastenings such as nuts and bolts may be used to fasten the struts 36 to the panel members 30, 31.
  • the panel members 30, 31 are respectively provided with a number of angularly spaced-apart holes 40, 41 into which are welded circular or elliptical dished portions or members 42, 43 respectively.
  • the base 44 of each dished member 42 is welded to a base 45 of a corresponding dished member 43.
  • the dished members 42, 43 thus interconnect the panel members 30, 31 and also brace the panel members 30, 31 together.
  • only one of the panel members 30, 31 need be provided with angularly spaced-apart holes 40, 41, the dished members 42 then having their edges welded to the holes 40 and having their bases welded to the opposite panel member 31.
  • each panel member 30, 31 may have angularly spaced-apart holes 40, 41, the holes in one panel member being staggered relative to the holes in the other panel member so that the dished members 42, 43 have their bases welded to one panel member while their edge portions are welded to the other panel member.
  • the dished members 42, 43 are arranged so that they face alternately in the opposite directions with their bases and edge portions respectively fastened to alternate panel members 30, 31.
  • FIG. 3 there is shown a modification in which a bearing support ring 26a is employed, which houses roller bearings 24a, 25a and whose upstream end is supported from a strut 36a by way of two axially spaced substantially radially extending annular panel members 30a, 31a which are welded to the bearing support ring 26a at 32a, and to the strut 36a at 34 la, 35a respectively.
  • the strut 36a extends through hollow nozzle guide vanes as in the FIG. 2 construction.
  • the panel members 30a, 31a are respectively provided with a plurality of angularly spaced-apart lozenge-shaped (preferably substantially elliptically shaped) dished portions 42a, 430 whose bases 44a, 45a are respectively welded to each other, whereby to interconnect and brace the panel members 30a, 31:: together.
  • Each of the panel members 30a, 31a is provided, between its adjacent dished portions, with corrugated portions 46 to take radial loads from the bearings 24a, 25a.
  • the dished portions 420, 43a create an axially stiff structure to take axial gas loads.
  • one only of the panel members 30a, 31a to have a plurality of angularly spaced-apart dished portions whose bases are welded to the other panel member.
  • the structure shown in FIGS. 2 and 3 is stiff both axially, radially and about a diametrical axis, and is relatively simple and inexpensive to manufacture. Moreover, it enables the bearings to be supported by structure extending through the nozzle guide vanes and thus without increasing the length of the engine. By reason of its said stiffness, the structure is such as to make it easy to provide passages (not shown) for cooling air and thereby to afiord protection for oil pipes (not shown) in what is normally a very hot region.
  • the panel members 30b, 31b (only one shown) have a number of angularly spaced-apart lozenge-shaped dished portions 42b of relatively rounded shape, further shallow dished portions 42b of relatively rounded shape, further shallow dished portions 48 being interposed between the relatively rounded dished portions 42b.
  • the dished portions 48 are of markedly elongated form, and have their major axes 49 extending radially of the shaft 22 of the engine. As can be seen from FIG.
  • the relatively rounded dished portions 42b, 43b are welded together, but the shallow elongated dished portions 48, which are provided in both the panel members 30, 31, are not joined together and constitute corrugated portions between the relatively rounded dished portions 42b, 43b.
  • FIG. 4 also illustrates how pipes such as 50 may conveniently be routed through the panel members 30b, 31b.
  • Holes 54, 56 are provided in regions of the panel members which are not dished. As can be seen from FIG. 6, the edges of the holes 54, 56 are deformed out of the planes of the holes to form stiffened rims 58 therefor. By providing holes with stiffened rims, the weight of the structure is reduced, but the stiffness is not undesirably reduced.
  • panel members 30c, 310 have dished portions of different shapes.
  • the panel member 30c (shown in full lines) has lozenge-shaped dished portions which are generally pear shaped as shown at 42c, 42d, it will be noted that the dished portions at 42d have small reentrant curves on their flanks to clear holes 60 in undished portions of the panel member 300.
  • the edges of the holes 60 are deformed in the same way as described with reference to FIG. 6, and may be arranged to pennit the passage of, and support by means of webs 61, pipes or cooling air ducts.
  • lozenge-shaped dished portions 42c, 420' are shown as having their larger ends radially inward, they may be reversed, so that the larger end is radially outward.
  • An undished region of the panel member 30c is provided with holes 62 having deformed edges as in FIG. 6.
  • the other panel member 310 is disposed behind the panel member 300, when viewed as in FIG. 7, and has dished portions 42e of a generally rounded lozenge shape which are shown dotted in FIG, 7.
  • the shape of these dished portions 42e is very similar to the dished portions 42b of FIG 4.
  • Holes 64 shown dotted having rims as shown in FIG. 6, are provided in the undished regions of the panel member 31d.
  • each open end of the connecting member is respectively secured e.g. by welding or brazing in an aperture in the base of a respective dished portion 42c, 42d or 42e, thus forming a deeper dished portion 69 therein.
  • Each tubular connecting member 67 may if desired be made in two cup-shaped parts joined at their bases to form the internal wall 68.
  • the deeper dished portion 69 can be provided in the other types of dished portions 42 described previously
  • a single cup-shaped member may be employed to provide a dished portion 42 with a deeper dished portion 68 and to join it directly to the other panel member, instead of the base of another cup-shaped member.
  • a gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced apart dished portions, said at least one panel member having corrugated portions between said dished portions, and said dished portions being secured to the other of said panel members to brace together and interconnect the panel members.
  • corrugated portions are constituted by elongated dished portions, the major axis of each elongated dished portion extending radially of the shaft.
  • a gas turbine engine as claimed in claim 1 comprising in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
  • a gas turbine engine as claimed in claim 1 comprising means defining apertures in regions of at least one panel member which are not dished, the edges of the apertures being deformed out of the planes of the apertures, forming stiffened rims therefor.
  • a gas turbine engine as claimed in claim 11, comprising for each said pair of dished portions a connecting member extending between said bases securing them together, said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.
  • a gas turbine engine as claimed in claim 1 including an axially extending bearing support ring, said bearing being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
  • a gas turbine engine as claimed in claim 1 including a plurality of angularly spaced-apart struts secured to said engine casing, said panel members being secured to said struts, a plurality of hollow nozzle guide vanes, each of said struts extending through one of said guide vanes.
  • a gas turbine engine comprising in flow sequence compressor means, combustion means, and turbine means, a shaft supporting at least one of said compressor means and said turbine means, a bearing in which said shaft is mounted, a fixed cylindrical engine casing, two axially spaced substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions each of which is secured to the other of said panel members to brace together and interconnect the same, said dished portions being elliptical in shape, said at least one panel member having corrugated portions between the dished portions thereof.
  • a gas turbine engine as claimed in claim wherein the said dished portions are integrally formed in said at least one panel member.
  • a gas turbine engine as claimed in claim 15 wherein said angularly spaced-apart dished portions are provided in both panels, said portions being arranged in pairs, one from each panel, the portions of each pair having their bases secured together,
  • a gas turbine engine as claimed in claim 15 including an axially extending bearing support ring, said bearings being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
  • a gas turbine engine as claimed in claim 15 including a plurality of angularly spaced-apart struts secured to said engine casing, said panel members being secured to said struts, a plurality of hollow nozzle guide vanes, each of said struts extending through one of said guide vanes.
  • a gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said dished portions being secured to the other of said panel members to brace together and interconnect the panel members, said dished portions being of relatively rounded shape, and further dished portions being interposed between the relatively rounded dished portions and being of relatively elongated shape, each relatively elongated dished portion having a major axis which extends radially of the shaft.
  • a gas turbine engine as claimed in claim 20 comprising in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
  • a gas turbine engine as claimed in claim 20 comprising means defining apertures in regions of the said at least one panel member which are not dished, the edges of the apertures being deformed out of the planes of the apertures, forming stiffened rims therefor.
  • a gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, both panel members having a plurality of angularly spaced-apart dished portions, said dished portions being arranged in pairs, one from each panel member, and a connecting member for each said air of dished portions extending between the bases of said ished portions and securing them together, each said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Rolling Contact Bearings (AREA)
  • Turbine Rotor Nozzle Sealing (AREA)
  • Support Of The Bearing (AREA)

Abstract

A gas turbine engine comprises in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said portions being secured to the other of said panel members to brace together and interconnect the panel members.

Description

United States Patent inventors John Michael Storer Keen;
Maurice John Byett; Frauds Anthony Weston, all of Derby, England Appl. No. 865,942 Filed Oct. 13, 1969 Patented Nov. 16, 1971 Assignee Rolls-Royce Limited Derby, England Priority Oct. 6, 1966 Great Britain 64/66 Continuation-impart of application Ser. No. 668,387, Sept. 18, 1967, now abandoned. This application Oct. 13, 1969, Ser. No. 865,942
BEARING ASSEMBLY 23 (1111111 8 Drawing Figs.
US. Cl. 415/170, 415/217 Int. Cl. ..F01d 11/08, FOld 1/02 FleldolSearch 415/115, 170, 219, 213,180,135, 217
[56] References Cited UNITED STATES PATENTS 2.746,67l 5/1956 Newcomb 415/115 2,937,847 5/1960 Stalker A, 415/213 3,421,686 l/l969 Coplin etal. 4l5/l70 3.428.243 2/1969 Britt et a1. 1. 415/111 FOREIGN PATENTS 779.056 .7/1957 Great Britain 415/135 Primary Examiner-Henry F. Raduazo Attorney-Cushman, Darby & Cushman ABSTRACT: A gas turbine engine comprises in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced apart substan tially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said portions being secured to the other of said panel members to brace together and interconnect the panel members.
PATENTEUNuv 1s |97l 3,520,541
sum 3 OF 4 yMa Allorney;
BEARING ASSEMBLY This application is a continuation-in-part of our copending application Ser. No. 668,387 filed Sept. 18, 1967 and now abandoned. This invention concerns a bearing assembly of a gas turbine engine.
In aircraft gas turbine engines there is a continuous conflict between the weight and the necessary structural strength of parts of the engine. This conflict is particularly marked in the large structures that are employed to support the central shaft or shafts of the engine, that is to say the shafts each of which carry at least one bladed rotor of the engine.
Therefore, it is an object of the present invention to provide a bearing support structure having a high degree of stiffness in both the axial and radial directions, and also a high degree of stiffness against rocking motion of a shaft supported therein, while the weight of the structure is kept to an acceptable value.
Accordingly, the invention provides a gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said portions being secured to the other of said panel members to brace together and interconnect the panel members.
The dished portions may be substantially lozenge shaped. By lozenge shaped we mean generally rounded in outline, but not necessarily symmetrical, and this term is intended to include shapes ranging from circular, through oval to markedly elongated or boat shaped.
Thus, the dished portions each may have major and minor axes, the major axis extending radially on the shaft.
Thus, the dished portions may be elliptical.
At least one panel member may have corrugated portions between the dished portions.
The corrugated portions may be constituted by elongated dished portions, the major axis of each elongated dished portion extending radially of the shaft.
Said dished portions may be of relatively rounded shape, further dished portions being interposed between the relatively rounded dished portions, and being of relatively elongated shape, each relatively elongated dished portion having a major axis which extends radially of the shaft.
There may be provided in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
There may be means defining apertures in regions of the at least one panel member which are not dished, the edges of the apertures being deformed out of the planes of the apertures forming stiffened rims therefor.
The dished portions may be secured to the other offset panel members by welding.
The said dished portions may be integrally formed in said at least one panel member.
Said angularly spaced apart dished portions may be provided in both panels, said portions being arranged in pairs, one from each panel, the portions of each panel having their bases secured together.
There may be for each said pair of dished portions a connecting member extending between said bases securing them together, said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.
There may be an axially extending bearing support ring, said bearing being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
There may be a plurality of angularly spaced-apart struts secured to said engine casing, said panel members being secured to said struts, a plurality of hollow noule guide vanes, each of said struts extending through one of said guide vanes. The invention will be described, merely by way of example, with reference to the accompanying drawings, wherein:
FIG. 1 is a diagrammatic view of a gas turbine engine provided with a bearing assembly according to the present invention,
FIG. 2 is a broken away sectional view of a larger scale of part of the structure of the engine of FIG. 1,
FIG. 3 is a broken-away sectional view of a modification,
FIG. 4 is an axially facing view of another modification,
FIG. 5 is a section on line 5-5 of FIG. 4,
FIG. 6 is a section on line 66 of FIG. 4,
FIG. 7 is an axially facing view of another modification, and
FIG. 8 is a section on line 8-8 of FIG. 7.
In FIG. 1 there is shown a gas turbine jet propulsion engine 10 having an engine casing 11 within which are mounted in flow series a low-pressure compressor 12, a high-pressure compressor 13, combustion equipment 14, a high-pressure turbine 15, a plurality of angularly spaced-apart hollow nozzle guide vanes 16, a low-pressure turbine 17 and an exhaust duct 18.
The high-pressure turbine 15 drives the high-pressure compressor 13 by way of a shaft 21 (FIG. 2), while the low-pressure turbine 17 drives the low-pressure compressor 12 by way of shaft 22, a portion of the shaft 21 being mounted concentrically within a portion of the shaft 22.
The portion of the shafts 21, 22 are mounted respectively within roller bearings 24, 25 respectively. The bearings 24, 25 are mounted within and supported by a common axially extending bearing support ring 26.
The bearing support ring 26 is supported from the fixed cylindrical structure constituted by the engine casing 11, by way of two axially spaced substantially radially extending annular panel members 30, 31 which are welded to the bearing support ring 26 at 32, 33 respectively. The panel members 30, 31 are welded at 34, 35 to a plurality of angularly spaced-apart common struts 36 each of which passes through a respective hollow nozzle guide vane 16 and is bolted to the engine casing 11. Alternatively, fastenings such as nuts and bolts may be used to fasten the struts 36 to the panel members 30, 31.
The panel members 30, 31 are respectively provided with a number of angularly spaced- apart holes 40, 41 into which are welded circular or elliptical dished portions or members 42, 43 respectively. The base 44 of each dished member 42 is welded to a base 45 of a corresponding dished member 43. The dished members 42, 43 thus interconnect the panel members 30, 31 and also brace the panel members 30, 31 together.
Alternatively, only one of the panel members 30, 31 need be provided with angularly spaced- apart holes 40, 41, the dished members 42 then having their edges welded to the holes 40 and having their bases welded to the opposite panel member 31.
In another alternative, each panel member 30, 31 may have angularly spaced- apart holes 40, 41, the holes in one panel member being staggered relative to the holes in the other panel member so that the dished members 42, 43 have their bases welded to one panel member while their edge portions are welded to the other panel member. Thus with this arrange ment the dished members 42, 43 are arranged so that they face alternately in the opposite directions with their bases and edge portions respectively fastened to alternate panel members 30, 31.
In FIG. 3 there is shown a modification in which a bearing support ring 26a is employed, which houses roller bearings 24a, 25a and whose upstream end is supported from a strut 36a by way of two axially spaced substantially radially extending annular panel members 30a, 31a which are welded to the bearing support ring 26a at 32a, and to the strut 36a at 34 la, 35a respectively. The strut 36a extends through hollow nozzle guide vanes as in the FIG. 2 construction.
The panel members 30a, 31a are respectively provided with a plurality of angularly spaced-apart lozenge-shaped (preferably substantially elliptically shaped) dished portions 42a, 430 whose bases 44a, 45a are respectively welded to each other, whereby to interconnect and brace the panel members 30a, 31:: together. Each of the panel members 30a, 31a is provided, between its adjacent dished portions, with corrugated portions 46 to take radial loads from the bearings 24a, 25a. The dished portions 420, 43a create an axially stiff structure to take axial gas loads.
A further possibility is for one only of the panel members 30a, 31a to have a plurality of angularly spaced-apart dished portions whose bases are welded to the other panel member.
.The structure shown in FIGS. 2 and 3 is stiff both axially, radially and about a diametrical axis, and is relatively simple and inexpensive to manufacture. Moreover, it enables the bearings to be supported by structure extending through the nozzle guide vanes and thus without increasing the length of the engine. By reason of its said stiffness, the structure is such as to make it easy to provide passages (not shown) for cooling air and thereby to afiord protection for oil pipes (not shown) in what is normally a very hot region.
The structures hereinafter described with reference to FIGS. 4 to 7 have similar advantages.
In FIG. 4, the panel members 30b, 31b (only one shown) have a number of angularly spaced-apart lozenge-shaped dished portions 42b of relatively rounded shape, further shallow dished portions 42b of relatively rounded shape, further shallow dished portions 48 being interposed between the relatively rounded dished portions 42b. The dished portions 48 are of markedly elongated form, and have their major axes 49 extending radially of the shaft 22 of the engine. As can be seen from FIG. 5, the relatively rounded dished portions 42b, 43b are welded together, but the shallow elongated dished portions 48, which are provided in both the panel members 30, 31, are not joined together and constitute corrugated portions between the relatively rounded dished portions 42b, 43b.
FIG. 4 also illustrates how pipes such as 50 may conveniently be routed through the panel members 30b, 31b.
Holes 54, 56 are provided in regions of the panel members which are not dished. As can be seen from FIG. 6, the edges of the holes 54, 56 are deformed out of the planes of the holes to form stiffened rims 58 therefor. By providing holes with stiffened rims, the weight of the structure is reduced, but the stiffness is not undesirably reduced.
In the embodiment of FIG. 7, panel members 30c, 310 have dished portions of different shapes. The panel member 30c (shown in full lines) has lozenge-shaped dished portions which are generally pear shaped as shown at 42c, 42d, it will be noted that the dished portions at 42d have small reentrant curves on their flanks to clear holes 60 in undished portions of the panel member 300. The edges of the holes 60 are deformed in the same way as described with reference to FIG. 6, and may be arranged to pennit the passage of, and support by means of webs 61, pipes or cooling air ducts.
Although the lozenge-shaped dished portions 42c, 420' are shown as having their larger ends radially inward, they may be reversed, so that the larger end is radially outward.
An undished region of the panel member 30c is provided with holes 62 having deformed edges as in FIG. 6.
The other panel member 310 is disposed behind the panel member 300, when viewed as in FIG. 7, and has dished portions 42e of a generally rounded lozenge shape which are shown dotted in FIG, 7. The shape of these dished portions 42e is very similar to the dished portions 42b of FIG 4. Holes 64 (shown dotted) having rims as shown in FIG. 6, are provided in the undished regions of the panel member 31d.
Referring to FIG. 8, it will be seen that the pairs of dished portions 42c, 42d, 42e have their bases secured together by a connecting member 67 of open-ended tubular form, the connecting member 67 having an internal dividing wall 68. Each open end of the connecting member is respectively secured e.g. by welding or brazing in an aperture in the base of a respective dished portion 42c, 42d or 42e, thus forming a deeper dished portion 69 therein. Each tubular connecting member 67 may if desired be made in two cup-shaped parts joined at their bases to form the internal wall 68. Of course, if desired, the deeper dished portion 69 can be provided in the other types of dished portions 42 described previously Also, a single cup-shaped member may be employed to provide a dished portion 42 with a deeper dished portion 68 and to join it directly to the other panel member, instead of the base of another cup-shaped member.
We claim:
1. A gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced apart dished portions, said at least one panel member having corrugated portions between said dished portions, and said dished portions being secured to the other of said panel members to brace together and interconnect the panel members.
2. A gas turbine engine as claimed in claim 1 wherein the dished portions are substantially lozenge shaped, as herein defined.
3. A gas turbine engine as claimed in claim 2 wherein the dished portions each have major and minor axes, the major axes extending radially of the shaft.
4. A gas turbine engine as claimed in claim 2 wherein the dished portions are elliptical.
5. A gas turbine engine as claimed in claim 1 wherein the corrugated portions are constituted by elongated dished portions, the major axis of each elongated dished portion extending radially of the shaft.
6. A gas turbine engine as claimed in claim 1 wherein said dished portions are of relatively rounded shape, further dished portions being interposed between the relatively rounded dished portions, and being of relatively elongated shape, each relatively elongated dished portion having a major axis which extends radially of the shaft.
7. A gas turbine engine as claimed in claim 1 comprising in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
8. A gas turbine engine as claimed in claim 1 comprising means defining apertures in regions of at least one panel member which are not dished, the edges of the apertures being deformed out of the planes of the apertures, forming stiffened rims therefor.
9. A gas turbine engine as claimed in claim 1 wherein the dished portions are secured to the other of said panel members by welding.
10. A gas turbine engine as' claimed in claim 1 wherein the said dished portions are integrally formed in said at least one panel member.
11. A gas turbine engine as claimed in claim 1 wherein said angularly spaced-apart dished portions are provided in both panels, said portions being arranged in pairs, one from each panel, the portions of each pair having their bases secured together.
12. A gas turbine engine as claimed in claim 11, comprising for each said pair of dished portions a connecting member extending between said bases securing them together, said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.
13. A gas turbine engine as claimed in claim 1 including an axially extending bearing support ring, said bearing being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
14. A gas turbine engine as claimed in claim 1 including a plurality of angularly spaced-apart struts secured to said engine casing, said panel members being secured to said struts, a plurality of hollow nozzle guide vanes, each of said struts extending through one of said guide vanes.
15. A gas turbine engine comprising in flow sequence compressor means, combustion means, and turbine means, a shaft supporting at least one of said compressor means and said turbine means, a bearing in which said shaft is mounted, a fixed cylindrical engine casing, two axially spaced substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions each of which is secured to the other of said panel members to brace together and interconnect the same, said dished portions being elliptical in shape, said at least one panel member having corrugated portions between the dished portions thereof.
16. A gas turbine engine as claimed in claim wherein the said dished portions are integrally formed in said at least one panel member.
17. A gas turbine engine as claimed in claim 15 wherein said angularly spaced-apart dished portions are provided in both panels, said portions being arranged in pairs, one from each panel, the portions of each pair having their bases secured together,
18. A gas turbine engine as claimed in claim 15 including an axially extending bearing support ring, said bearings being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
19 A gas turbine engine as claimed in claim 15 including a plurality of angularly spaced-apart struts secured to said engine casing, said panel members being secured to said struts, a plurality of hollow nozzle guide vanes, each of said struts extending through one of said guide vanes.
20. A gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said dished portions being secured to the other of said panel members to brace together and interconnect the panel members, said dished portions being of relatively rounded shape, and further dished portions being interposed between the relatively rounded dished portions and being of relatively elongated shape, each relatively elongated dished portion having a major axis which extends radially of the shaft.
21. A gas turbine engine as claimed in claim 20 comprising in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
22, A gas turbine engine as claimed in claim 20 comprising means defining apertures in regions of the said at least one panel member which are not dished, the edges of the apertures being deformed out of the planes of the apertures, forming stiffened rims therefor.
23. A gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, both panel members having a plurality of angularly spaced-apart dished portions, said dished portions being arranged in pairs, one from each panel member, and a connecting member for each said air of dished portions extending between the bases of said ished portions and securing them together, each said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.

Claims (23)

1. A gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced apart dished portions, said at least one panel member having corrugated portions between said dished portions, and said dished portions being secured to the other of said panel members to brace together and interconnect the panel members.
2. A gas turbine engine as claimed in claim 1 wherein the dished portions are substantially lozenge shaped, as herein defined.
3. A gas turbine engine as claimed in claim 2 wherein the dished portions each have major and minor axes, the major axes extending radially of the shaft.
4. A gas turbine engine as claimed in claim 2 wherein the dished portions are elliptical.
5. A gas turbine engine as claimed in claim 1 wherein the corrugated portions are constituted by elongated dished portions, the major axis of each elongated dished portion extending radially of the shaft.
6. A gas turbine engine as claimed in claim 1 wherein said dished portions are of relatively rounded shape, further dished portions being interposed between the relatively rounded dished portions, and being of relatively elongated shape, each relatively elongated dished portion having a major axis which extends radially of the shaft.
7. A gas turbine engine as claimed in claim 1 comprising in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
8. A gas turbine engine as claimed in claim 1 comprising means defining apertures in regions of at least one panel member which are not dished, the edges of the apertures being deformed out of the planes of the apertures, forming stiffened rims therefor.
9. A gas turbine engine as claimed in claim 1 wherein the dished portions are secured to the other of said panel members by welding.
10. A gas turbine engine as claimed in claim 1 wherein the said dished portions are integrally formed in said at least one panel member.
11. A gas turbine engine as claimed in claim 1 wherein said angularly spaced-apart dished portions are provided in both panels, said portions being arranged in pairs, one from each panel, the portions of each pair having their bases secured together.
12. A gas turbine engine as claimed in claim 11, comprising for each said pair of dished portions a connecting member extending between said bases securing them together, said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.
13. A gas turbine engine as claimed in claim 1 including an axially extending bearing support ring, said bearing being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
14. A gas turbine engine as claimed in claim 1 including a plurality of angularly spaced-apart struts secured to said engine casing, said panel members being secured to said struts, a plurality of hollow nozzle guide vanes, each of said struts extending through one of said guide vanes.
15. A gas turbine engine comprising in flow sequence compressor means, combustion means, and turbine means, a shaft supporting at least one of said compressor means and said turbine means, a bearing in which said shaft is mounted, a fixed cylindrical engine casing, two axially spaced substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions each of which is secured to the other of said panel members to brace together and interconnect the same, said dished portions being elliptical in shape, said at least one panel member having corrugated portions between the dished portions thereof.
16. A gas turbine engine as claimed in claim 15 wherein the said dished portions are integrally formed in said at least one panel member.
17. A gas turbine engine as claimed in claim 15 wherein said angularly spaced-apart dished portions are provided in both panels, said portions being arranged in pairs, one from each panel, the portions of each pair having their bases secured together.
18. A gas turbine engine as claimed in claim 15 including an axially extending bearing support ring, said bearings being supported by said ring and said panel members being connected to said ring, a further bearing also being supported by the ring.
19. A gas turbine engine as claimed in claim 15 including a plurality of angularly spaced-apart struts secured to said engine casing, said panel members being secured to said struts, a plurality of hollow nozzle guide vanes, each of said struts extending through one of said guide vanes.
20. A gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, at least one of said panel members having a plurality of angularly spaced-apart dished portions, said dished portions being secured to the other of said panel members to brace together and interconnect the panel members, said dished portions being of relatively rounded shape, and further dished portions being interposed between the relatively rounded dished portions and being of relatively elongated shape, each relatively elongated dished portion having a major axis which extends radially of the shaft.
21. A gas turbine engine as claimed in claim 20 comprising in each dished portion a deeper dished portion which secures the said dished portion to the other of said panel members.
22. A gas turbine engine as claimed in claim 20 comprising means defining apertures in regions of the said at least one panel member which are not dished, the edges of the apertures being deformed out of the planes of the apertures, forming stiffened rims therefor.
23. A gas turbine engine comprising in flow sequence compressor means, combustion means and turbine means, the compressor means and the turbine means comprising bladed rotors, a shaft supporting at least one of said bladed rotors, a bearing in which said shaft is mounted, a fixed substantially cylindrical engine casing, two axially spaced-apart substantially radially extending annular panel members, said bearing being supported from the fixed casing by way of said panel members, both panel members having a plurality of angularly spaced-apart dished portions, said dished portions being arranged in pairs, one from each panel member, and a connecting member for each said pair of dished portions extending between the bases of said dished portions and securing them together, each said connecting member being an open-ended tubular member having an internal dividing wall, each open end being respectively secured in an aperture in the respective base, forming a deeper dished portion therein.
US865942A 1966-10-06 1969-10-13 Bearing assembly Expired - Lifetime US3620641A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB44764/66A GB1149513A (en) 1966-10-06 1966-10-06 Bearing assembly

Publications (1)

Publication Number Publication Date
US3620641A true US3620641A (en) 1971-11-16

Family

ID=10434648

Family Applications (1)

Application Number Title Priority Date Filing Date
US865942A Expired - Lifetime US3620641A (en) 1966-10-06 1969-10-13 Bearing assembly

Country Status (3)

Country Link
US (1) US3620641A (en)
DE (1) DE1626119C3 (en)
GB (1) GB1149513A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802797A (en) * 1973-01-15 1974-04-09 Gen Electric Reversing turbine flow divider support
JPS50119114A (en) * 1974-02-28 1975-09-18
EP0298898A2 (en) * 1987-07-09 1989-01-11 United Technologies Corporation Crossed I-beam structural strut
US5180282A (en) * 1991-09-27 1993-01-19 General Electric Company Gas turbine engine structural frame with multi-yoke attachment of struts to outer casing
US5236303A (en) * 1991-09-27 1993-08-17 General Electric Company Gas turbine engine structural frame with multi-clevis ring attachment of struts to outer casing
US5272869A (en) * 1992-12-10 1993-12-28 General Electric Company Turbine frame
US5292227A (en) * 1992-12-10 1994-03-08 General Electric Company Turbine frame
US6196795B1 (en) * 1996-02-13 2001-03-06 Kvaerner Energy A.S. Turbine pack and method for adapting a turbine pack
EP1316676A1 (en) * 2001-11-29 2003-06-04 General Electric Company Aircraft engine with inter-turbine engine frame
US20070231134A1 (en) * 2006-04-04 2007-10-04 United Technologies Corporation Integrated strut design for mid-turbine frames with U-base
US20080031727A1 (en) * 2004-10-06 2008-02-07 Volvo Aero Corporation Bearing Support Structure and a Gas Turbine Engine Comprising the Bearing Support Structure
US20080056888A1 (en) * 2006-09-01 2008-03-06 United Technologies Guide vane for a gas turbine engine
US20080112805A1 (en) * 2006-11-15 2008-05-15 Snecma Fastener device for fastening a free turbine stator with dual centering
EP1930555A2 (en) * 2006-12-06 2008-06-11 United Technologies Corporation Mid-turbine frame
US20080276621A1 (en) * 2006-07-27 2008-11-13 United Technologies Corporation Catenary mid-turbine frame design
US20110078902A1 (en) * 2009-10-01 2011-04-07 Pratt & Whitney Canada Corp. Method for centering engine structures
US20150143810A1 (en) * 2013-11-22 2015-05-28 Anil L. Salunkhe Industrial gas turbine exhaust system diffuser inlet lip
US9097141B2 (en) 2011-09-15 2015-08-04 Pratt & Whitney Canada Corp. Axial bolting arrangement for mid turbine frame
US10794224B2 (en) 2016-08-23 2020-10-06 Rolls-Royce Deutschland Ltd & Co Kg Gas turbine and method of attaching a turbine nozzle guide vane segment of a gas turbine
US11002152B2 (en) * 2019-02-14 2021-05-11 Raytheon Technologies Corporation Integrated fan inlet case and bearing support for a gas turbine engine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06105048B2 (en) * 1991-05-28 1994-12-21 ゼネラル・エレクトリック・カンパニイ A device that attaches the core frame to the vane frame with a stable center ring in a detachable manner.
FR3033828B1 (en) * 2015-03-19 2018-04-20 Safran Helicopter Engines MONOBLOC TURBINE DISPENSER FOR GAS TURBINE ENGINE

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746671A (en) * 1950-04-14 1956-05-22 United Aircraft Corp Compressor deicing and thrust balancing arrangement
GB779056A (en) * 1954-02-12 1957-07-17 Rolls Royce Improvements in or relating to bladed or vaned structures for guiding the flow of a fluid
US2937847A (en) * 1954-06-24 1960-05-24 Stalker Corp Bladed axial flow rotors
US3421686A (en) * 1965-06-21 1969-01-14 Rolls Royce Bearing assembly
US3428243A (en) * 1966-10-20 1969-02-18 Rolls Royce Compressors or turbines for gas turbine engines

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2746671A (en) * 1950-04-14 1956-05-22 United Aircraft Corp Compressor deicing and thrust balancing arrangement
GB779056A (en) * 1954-02-12 1957-07-17 Rolls Royce Improvements in or relating to bladed or vaned structures for guiding the flow of a fluid
US2937847A (en) * 1954-06-24 1960-05-24 Stalker Corp Bladed axial flow rotors
US3421686A (en) * 1965-06-21 1969-01-14 Rolls Royce Bearing assembly
US3428243A (en) * 1966-10-20 1969-02-18 Rolls Royce Compressors or turbines for gas turbine engines

Cited By (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802797A (en) * 1973-01-15 1974-04-09 Gen Electric Reversing turbine flow divider support
JPS50119114A (en) * 1974-02-28 1975-09-18
JPS545449B2 (en) * 1974-02-28 1979-03-16
EP0298898A2 (en) * 1987-07-09 1989-01-11 United Technologies Corporation Crossed I-beam structural strut
US4820117A (en) * 1987-07-09 1989-04-11 United Technologies Corporation Crossed I-beam structural strut
EP0298898A3 (en) * 1987-07-09 1989-12-06 United Technologies Corporation Crossed i-beam structural strut
US5180282A (en) * 1991-09-27 1993-01-19 General Electric Company Gas turbine engine structural frame with multi-yoke attachment of struts to outer casing
US5236303A (en) * 1991-09-27 1993-08-17 General Electric Company Gas turbine engine structural frame with multi-clevis ring attachment of struts to outer casing
US5272869A (en) * 1992-12-10 1993-12-28 General Electric Company Turbine frame
US5292227A (en) * 1992-12-10 1994-03-08 General Electric Company Turbine frame
US6196795B1 (en) * 1996-02-13 2001-03-06 Kvaerner Energy A.S. Turbine pack and method for adapting a turbine pack
EP1316676A1 (en) * 2001-11-29 2003-06-04 General Electric Company Aircraft engine with inter-turbine engine frame
US7802962B2 (en) * 2004-10-06 2010-09-28 Volvo Aero Corporation Bearing support structure and a gas turbine engine comprising the bearing support structure
US20080031727A1 (en) * 2004-10-06 2008-02-07 Volvo Aero Corporation Bearing Support Structure and a Gas Turbine Engine Comprising the Bearing Support Structure
US8181466B2 (en) 2006-04-04 2012-05-22 United Technologies Corporation Mid-turbine frame
US8181467B2 (en) 2006-04-04 2012-05-22 United Technologies Corporation Mid-turbine frame torque box having a concave surface
US20070231134A1 (en) * 2006-04-04 2007-10-04 United Technologies Corporation Integrated strut design for mid-turbine frames with U-base
US7775049B2 (en) * 2006-04-04 2010-08-17 United Technologies Corporation Integrated strut design for mid-turbine frames with U-base
US20110030387A1 (en) * 2006-04-04 2011-02-10 United Technologies Corporation Mid-turbine frame torque box having a concave surface
US20110030386A1 (en) * 2006-04-04 2011-02-10 United Technologies Corporation Mid-turbine frame
US20080276621A1 (en) * 2006-07-27 2008-11-13 United Technologies Corporation Catenary mid-turbine frame design
US7594405B2 (en) * 2006-07-27 2009-09-29 United Technologies Corporation Catenary mid-turbine frame design
US20080056888A1 (en) * 2006-09-01 2008-03-06 United Technologies Guide vane for a gas turbine engine
US7815417B2 (en) * 2006-09-01 2010-10-19 United Technologies Corporation Guide vane for a gas turbine engine
US8133020B2 (en) * 2006-11-15 2012-03-13 Snecma Fastener device for fastening a free turbine stator with dual centering
US20080112805A1 (en) * 2006-11-15 2008-05-15 Snecma Fastener device for fastening a free turbine stator with dual centering
EP1930555A2 (en) * 2006-12-06 2008-06-11 United Technologies Corporation Mid-turbine frame
EP1930555A3 (en) * 2006-12-06 2012-08-08 United Technologies Corporation Mid-turbine frame
US20110078902A1 (en) * 2009-10-01 2011-04-07 Pratt & Whitney Canada Corp. Method for centering engine structures
US8316523B2 (en) * 2009-10-01 2012-11-27 Pratt & Whitney Canada Corp. Method for centering engine structures
US8578584B2 (en) 2009-10-01 2013-11-12 Pratt & Whitney Canada Corp. Method for centering engine structures
US9097141B2 (en) 2011-09-15 2015-08-04 Pratt & Whitney Canada Corp. Axial bolting arrangement for mid turbine frame
US20150143810A1 (en) * 2013-11-22 2015-05-28 Anil L. Salunkhe Industrial gas turbine exhaust system diffuser inlet lip
US9598981B2 (en) * 2013-11-22 2017-03-21 Siemens Energy, Inc. Industrial gas turbine exhaust system diffuser inlet lip
US10794224B2 (en) 2016-08-23 2020-10-06 Rolls-Royce Deutschland Ltd & Co Kg Gas turbine and method of attaching a turbine nozzle guide vane segment of a gas turbine
US11002152B2 (en) * 2019-02-14 2021-05-11 Raytheon Technologies Corporation Integrated fan inlet case and bearing support for a gas turbine engine

Also Published As

Publication number Publication date
DE1626119C3 (en) 1974-08-15
GB1149513A (en) 1969-04-23
DE1626119A1 (en) 1972-03-30
DE1626119B2 (en) 1973-12-20

Similar Documents

Publication Publication Date Title
US3620641A (en) Bearing assembly
US3269120A (en) Gas turbine engine with compressor and turbine passages in a single rotor element
US3703081A (en) Gas turbine engine
CA2049181C (en) Turbine support
US5224339A (en) Counterflow single rotor turbojet and method
US5483792A (en) Turbine frame stiffening rails
US8257036B2 (en) Externally mounted vortex generators for flow duct passage
US6860716B2 (en) Turbomachine frame structure
US6802695B2 (en) Turbines and their components
JP5124276B2 (en) Gas turbine intermediate structure and gas turbine engine including the intermediate structure
EP3431875B1 (en) Dilution holes for gas turbine engines
US3730644A (en) Gas turbine engine
US3448582A (en) Gas turbine engine
US3325087A (en) Stator casing construction for gas turbine engines
JP6039059B2 (en) Gas turbine engine support structure
US2501614A (en) Compressor construction
EP3165740B1 (en) Internally cooled spoke
US2441488A (en) Continuous combustion contraflow gas turbine
GB695724A (en) Improvements in or relating to structural elements for axial-flow turbo-machines such as compressors or turbines of gas-turbine engines
US20160265772A1 (en) Turbine engine combustor heat shield with multi-height rails
WO2015041801A2 (en) Diffuser with strut-induced vortex mixing
US20140093368A1 (en) Outer case with gusseted boss
US20170260877A1 (en) Doubler attachment system
EP3620619A1 (en) Turbine exhaust structure for a gas turbine engine
US3327473A (en) Engine support structure