Snubber bearing mounting assembly for bearingless rotors
US5499903A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 18, 1994 |
| Grant date | Mar 19, 1996 |
| Priority date | — |
| Expiry date | Oct 18, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/35
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A mounting assembly (100) is provided for securing a helicopter snubber bearing (70) to a bearingless rotor assembly (10) which includes a flexbeam connector (22) mounted to a torque drive hub member (18). The mounting assembly (100) includes a retainer fixture (102) for mounting a retainer (104) which engages an inner bearing race portion (88) of the snubber bearing (70). The retainer fixture (102) is mounted to the flexbeam connector (22) and includes an inboard end portion (112), a restraint portion (114) extending radially outboard thereof, and a seat portion (116) disposed therebetween. The retainer (104) is disposed in register with, and is compliantly bonded to, the seat portion (116) of the retainer fixture (102), and furthermore abuts the restraint portion (114) which provides redundant retention therefor. To reduce bondline stresses, the retainer (104) includes at least one stress relieving lateral slot (132) and at least one stress relieving forward slot (134), which cooperates with a radial slot (156) formed in the retainer fixture (102), to reduce shear and tensile stresses in the compliant adhesive (130). Furthermore, the seat portion (116) of the retainer fixture (10…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.