Main rotor assembly support truss
US5154371A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 10, 1991 |
| Grant date | Oct 13, 1992 |
| Priority date | — |
| Expiry date | Apr 10, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64C27/12
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A support truss for the main rotor assembly of a helicopter is configured to structurally support the main rotor assembly in integrated combination with the helicopter airframe and to transmit dynamic and static longitudinal, lateral, vertical, and torsional loads of the main rotor assembly into the helicopter airframe at two distinct, spaced-apart load transfer levels. The support truss is an integrally formed structure that includes a generally cylindrical body member configured to provide attachment points for the static rotor mast and the transmission of the main rotor assembly, a pair of forward facing primary support ribs configured to secure the support truss to a primary load transfer level of the helicopter airframe and to transmit dynamic and static longitudinal, lateral, vertical, and all torsional loads to the primary load transfer level, and a pair of aft facing support struts configured to secure the support truss to a secondary load transfer level and to transmit only axial loads to the secondary transfer level. The support truss also includes a forward facing secondary support rib that provides fail-safe redundancy in the event of a loss of one of the primary suppor…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.