Quiet nacelle system and hush kit
US4817756A · kind A · utility
28Cited by
10References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 28, 1987 |
| Grant date | Apr 4, 1989 |
| Priority date | — |
| Expiry date | Jul 28, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T50/60
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A quiet nacelle system for jet aircraft engines includes a nose cowl and nose dome having a sound-attenuating liner, a concentric ring between the nose cowl and nose dome, and fan duct components having a sound-attenuating liner. The system is particularly suitable for JT3D-3B and JT3D-7 engines for use with DC-8 aircraft. The components may be combined as a hush kit for retrofit in existing nacelle systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.