Microstructures for reducing noise of a fluid dynamic structure
US8460779B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2011 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Mar 30, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/24744
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid dynamic structure includes a surface and a microstructure mounted on the surface. The microstructure is defined by a plurality of peaks and valleys (i.e., riblets) and includes a transition region in which each peak and valley changes from a first profile to a second profile along a chord length of the structure. The peaks and/or valleys may have a variable dimension along the length of the microstructure. The peaks and valleys can be non-linear along the chord length and have a smooth transition from the first profile to the second profile. The different profiles of the microstructure are optimized to reduce noise generated by turbulent fluid flow across the structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.