Rotor, especially for rotary wing aircraft
US4786236A · kind A · utility
7Cited by
6References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 9, 1987 |
| Grant date | Nov 22, 1988 |
| Priority date | — |
| Expiry date | Oct 9, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/50
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A helicopter rotor with foldable blades has, in the hub and blade roots, holes for mounting the blade roots to the rotor hub with connecting bolts passing through these holes in the operating position of the blades. Additionally, at least one blade of two blades and the hub have aligned holes for holding the respective foldable blade in a folded position, whereby one of the regular connecting bolts passes through the aligned holes, which are located as close as possible to the pivoting point connecting a pitch angle control rod to a pitch angle control sleeve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.