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公开(公告)号：DE69115565D1
公开(公告)日：1996-02-01
申请号：DE69115565
申请日：1991-05-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BYRNES FRANCIS E , SCHAMLING DAVID N
Abstract: The flexbeam helicopter rotor has an improved connection between the flexbeam (20) and the hub (12) of the connecting pin variety but in which the high tensile fibers of the flexbeam (20) do not wrap around the connecting pin (22), wherein the blade centrifugal loads and the blade lead-lag loads are reacted by the connecting pin (22) at a station where it passes through drilled holes (58) in the flexbeam inner end, and wherein the blade flapping motion imposed loads are reacted through two load paths in the flexbeam-to-hub connection, the first load path being created by a prying reaction between the flexbeam (20) and the hub connecting flanges (16, 18), and the second load path being created by the differential bending reaction between the flexbeam (20) at the station of the drilled holes (58) and the connecting pins (22). Further, there are means (42, 44) to decouple the loads and decrease the maximum load in at least one of the load paths created by the aforementioned prying reaction and the aforementioned bending reaction so that they are substantially spaced along the flexbeam axis of rotation (34) from each other to thereby permit the use of a minimum thickness flexbeam (20), and gain the attended advantage of reduced rotor weight and size, and which flexbeam-to-hub connection has the additional advantage of a reduced flapping hinge effecting offset, or flapping axis, from the prior art type of connection.
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公开(公告)号：ES2065659T3
公开(公告)日：1995-02-16
申请号：ES91630109
申请日：1991-12-12
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BYRNES FRANCIS E
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公开(公告)号：DE68914567D1
公开(公告)日：1994-05-19
申请号：DE68914567
申请日：1989-09-19
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BYRNES FRANCIS E , SCHMALING DAVID N
Abstract: A hybrid metal composite rotor hub retention plate (1) having high strength and reduced weight. The retention plate (1) comprises a metallic perimeter support structure (4) and a plurality of metallic spokes (9) that extend inwardly from the perimeter structure (4) to a hub (12). The perimeter structure (4), hub (12) and spokes (9)define at least three holes(13). The perimeter structure (4) and spokes (9) have upper and lower surfaces (15, 18). Fiber reinforced resin matrix composite (6) capable of reacting to bending loads, in-plane shear and axial loads is bonded to the upper and lower surfaces (15,18). The hybrid metal composite rotor hub retention plate (1) is made by forming the metal structure (4) and using the metal stucture (4) as a mold for the fiber reinforced resin matrix composite (6).
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公开(公告)号：CA1325628C
公开(公告)日：1993-12-28
申请号：CA608604
申请日：1989-08-17
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BYRNES FRANCIS E , SCHMALING DAVID N
Abstract: Hybrid Helicopter Rotor Hub Retention Plate A hybrid metal composite rotor hub retention plate having high strength and reduced weight. The retention plate comprises a metallic perimeter support structure and a plurality of metallic spokes that extend inwardly from the perimeter structure to a hub. The perimeter structure, hub and spokes define at least three holes. The perimeter structure and spokes have upper and lower surfaces. fiber reinforced resin matrix composite capable of reacting to bending loads, in-plane shear and axial loads is bonded to the upper and lower surfaces. The hybrid metal composite rotor hub retention plate is made by forming the metal structure and using the metal structure as a mold for the fiber reinforced resin matrix composite.
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公开(公告)号：DE3877848D1
公开(公告)日：1993-03-11
申请号：DE3877848
申请日：1988-07-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FERRIS DONALD L , BYRNES FRANCIS E
Abstract: The fiber reinforced braided composite main helicopter rotor hub retention plate has a fiber orientation that withstands forces both in the plane of the retention plate and normal to the plane. The retention plate comprises a fiber reinforced resin braided tubular ring (3) having substantially circumferential fibers interwoven with angled fibers disposed about a central core. Arms (24) extend inward from the braided ring (9) for attachment to a driveshaft.
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Patent Agency Ranking
公开(公告)号：CA1311459C
公开(公告)日：1992-12-15
申请号：CA571526
申请日：1988-07-08
Applicant: UNITED TECHNOLOGIES CORP
Inventor： FERRIS DONALD L , BYRNES FRANCIS E
Abstract: Composite Helicopter Rotor Hub A fiber reinforced braided composite main helicopter rotor hub retention plate whose fiber orientation withstands forces both in the plane of the retention plate and normal to the plane. The retention plate comprises a fiber reinforced resin braided tubular ring having substantially circumferential fibers interwoven with angled fibers disposed about a central core. Arms extend inward from the braided ring for attachment to a driveshaft.
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公开(公告)号：CA2052910A1
公开(公告)日：1992-04-24
申请号：CA2052910
申请日：1991-10-03
Applicant: UNITED TECHNOLOGIES CORP
Inventor： SCHMALING DAVID N , BYRNES FRANCIS E
Abstract: An improved clevis joint capable of withstanding substantial pivotal motion between its joined members and loading along its axis. An improved clevis joint wherein the parts joined thereby are pivotally connected by two sets of elastomeric bearings which are free to rotate about the joint axis and which envelope and support a free floating centering pin from the joined members so that during motion between the joined members, said elastomeric bearing sets share the rotary motion due to the rotating of the connecting pin. S-4348 - 16
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公开(公告)号：CA2042532A1
公开(公告)日：1991-12-01
申请号：CA2042532
申请日：1991-05-14
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BYRNES FRANCIS E , SCHMALING DAVID N
Abstract: A flexbeam helicopter rotor having an improved connection between the flexbeam and the hub of the con- necting pin variety but in which the high tensile fi- bers of the flexbeam do not wrap around the connecting pin, wherein the blade centrifugal loads and the blade lead-lag loads axe reacted by the connecting pin at a station where it passes through drilled holes in the flexbeam inner end, and wherein the blade flapping mo- tion imposed loads are reacted through two load paths in the flexbeam-to-hub connection, the first load path being created by a prying reaction between the flexbeam and the hub connecting flanges, and the second load path being created by the differential bending reaction between the flexbeam at the station of the drilled holes and the connecting bolts. Further, there are means to decouple the loads and decrease the maximum load in at least one of the load paths created by the aforementioned prying reaction and the aforementioned bending reaction so that they are substantially spaced along the flexbeam axis of rotation from each other to thereby permit the use of a minimum thickness flexbeam, and gain the attended advantage of reduced rotor weight and size, and which flexbeam-to-hub connection has the additional advantage of a reduced flapping hinge ef- fecting offset, or flapping axis, from the prior art type of connection.
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公开(公告)号：CA1246349A
公开(公告)日：1988-12-13
申请号：CA483585
申请日：1985-06-10
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BYRNES FRANCIS E , FERRIS DONALD L , HIBYAN EDWARD S , NOEHREN WILLIAM L , OGLE PETER C
Abstract: ELASTOMERIC HIGH TORQUE CONSTANT VELOCITY JOINT A nearly spherical laminated elastomeric bearing has a non-circular latitudinal cross-section to accommodate high torque loads in elastomer bending rather than in shear. The nearly spherical profile of the bearing accommodates tilt primarily in shear. Both inwardly and outwardly extending lobes, or splines, are disclosed. The nearly spherical, lobed bearing is useful for a constant velocity joint.
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公开(公告)号：FR2566489A1
公开(公告)日：1985-12-27
申请号：FR8509232
申请日：1985-06-18
Applicant: UNITED TECHNOLOGIES CORP
Inventor： BYRNES FRANCIS E , HIBYAN EDWARD S , OGLE PETER C , FERRIS DONALD L , NOEHREN WILLIAM L , OLSEN ERIC G
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