Propeller blade with modified spar layup
US9488056B2 · kind B2 · utility
6Cited by
6References
12Claims
0Family size
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Inventors
Key dates
| Filing date | Apr 30, 2013 |
| Grant date | Nov 8, 2016 |
| Priority date | — |
| Expiry date | May 8, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49332
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
According to one embodiment, a propeller blade includes a foam core and a structural layer formed of multiple layers that surrounds at least a portion of the foam core. The structural layer includes a mid-thickness location defined between the foam core and an outer edge of the structural layer and the multiple layers include at least one unidirectional layer and at least one biased layer disposed asymmetrically about the mid-thickness location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.