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US 9,139,287 B2Granted
Propeller blade with carbon foam spar core
AssigneeHamilton Sundstrand Corporation
InventorsMichael E. Folsom, Blair A. Smith, David P. Nagle
Life of this patent
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Abstract
According to one embodiment, a propeller blade includes a carbon foam core and a structural layer that surrounds at least a portion of the carbon foam core.
Claims6
A propeller blade comprising:
- a carbon foam core stub;
- a structural layer surrounding the carbon foam core stub;
- foam surrounding the carbon foam core stub and within the structural layer;
- a leading edge section formed outside of the structural layer;
- and
- a trailing edge section formed outside of the structural layer and opposite the leading edge section;
- wherein at least one of the leading and trailing edges is formed of a carbon foam.
4 more elements
Dependencies are inferred from the claim text.