Cross-beam helicopter rotor with readily replaceable snubber
US4244677A · kind A · utility
39Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 1978 |
| Grant date | Jan 13, 1981 |
| Priority date | — |
| Expiry date | Jul 12, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/33
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A cross-beam helicopter rotor in which the torque tube enveloping the flexible spar is supported in relation thereto by an elastomeric primary snubber which is readily replaceable in the field and which utilizes a snubber retainer plate bonded to the spar with an elastomer layer of selected shape factor so that the retainer plate remains adhered to the spar while accommodating all blade and spar pitch and flapping motions and so that the retainer plate elastomer layer is substantially more durable than the elastomer layers of the primary snubber. This primary snubber may be used in combination with an auxiliary snubber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.