Nitrogen enriched air supply system and aircraft
US10435171B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 4, 2013 |
| Grant date | Oct 8, 2019 |
| Priority date | — |
| Expiry date | May 24, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/2931
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
To provide a nitrogen enriched air (NEA) supply system which easily maintains low the concentration of oxygen within a tank before fueling. In the present invention, a subsidiary pipe 20b that directly supplies NEA to a spill-back pipe 23 is provided. In a descent phase of an aircraft, the NEA is supplied to a second fuel tank 17 from the subsidiary pipe 20b. When the second fuel tank 17 is fueled after landing, the stored NEA is pushed out into a first fuel tank 15 through the spill-back pipe 23 by fuel F. Thus, the concentration of oxygen within the first fuel tank 15 can be also maintained low. Accordingly, it is possible to cut out the need for supplying the NEA before fueling, and thereby fuel the fuel tank while avoiding fuel explosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.