Roll vibration absorber
US5118051A · kind A · utility
9Cited by
10References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1989 |
| Grant date | Jun 2, 1992 |
| Priority date | — |
| Expiry date | Apr 18, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C2027/005
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter (10) is roll vibration resistant having cantilever spring (40) supported masses (42) located at extreme outboard locations (30). The spring portion (40) extends substantially horizontally and is rigidly secured to rigid structure (28). This vibration absorber (34) is tuned to the forced frequency established by the normal rotor (14) RPM times the number of rotor blades (16).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.