Inlet duct selector for tiltrotor barrier filter
US10023296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 9, 2016 |
| Grant date | Jul 17, 2018 |
| Priority date | — |
| Expiry date | Nov 24, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2033/0293
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention includes an air flow bypass for a tiltrotor engine comprising: a ram air inlet comprising bypass door(s) capable of at least partially or fully blocking a ram air flow through the ram air inlet; a barrier filter inlet positioned in a side, a bottom, and/or a top of a tiltrotor engine nacelle; a filter plenum; a selector duct comprising one or more openings; and one or more selector duct doors or covers over the one or more openings; wherein the barrier filter inlet, the filter plenum, the one or more openings in the selector duct, the selector duct, and an engine are in fluid communication and the bypass door(s) in the ram inlet are closed and the barrier filter inlet provides filtered air flow to the engine when the aircraft is in hover operations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.