Fire containment apparatuses for aircraft duct assemblies
US9650149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 2014 |
| Grant date | May 16, 2017 |
| Priority date | — |
| Expiry date | Apr 28, 2035 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB64D2033/0213
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An intake duct assembly for an auxiliary power unit system is provided. A first inlet adapter includes at least one hole through the duct wall. A fire containment apparatus forms a first passage to direct intake air between exterior wall of the aircraft and the enclosure. An inner duct mounted on the first inlet adapter at a first position downstream of the at least one hole and mounted on the second inlet adapter. An outer sheath is mounted on the first inlet adapter at a second position upstream of the at least one hole and mounted on the second inlet adapter. The outer sheath circumscribes the inner duct to form at least a portion of a barrier annulus between the inner duct and outer sheath in fluid communication with the first passage via the at least one hole in the first inlet adapter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.