Cross beam rotor
US4299538A · kind A · utility
20Cited by
6References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 6, 1978 |
| Grant date | Nov 10, 1981 |
| Priority date | — |
| Expiry date | Dec 6, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/33
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter rotor having an even number of articulated blades wherein opposing blades are interconnected by a common spar passing across the rotor axis. Pitch change is introduced to the blade at the spar-blade attachment joint through a torque member connected at its outboard end to the blade joint and including a control horn at its inner end to receive pitch inputs. Drive for the rotor and support for each blade is provided by a spherical bearing directly connecting the torque member to the blade associated hub arm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.