Rotatable lifting surface device having selected pitch distribution and camber profile
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United States of America Patent
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May 9, 2006
Grant Date -
Oct 20, 2005
app pub date -
Apr 20, 2004
filing date -
Apr 20, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Rotatable lifting surface devices, such as propellers, impellers, and turbines, and blades for such devices use camber profiles and pitch distributions to obtain performance from flexible devices and blades, made from materials like polymers and polymer-composites and even metals, that is substantially the same as the performance of stiff devices and blades, usually made from materials like steel and aluminum.
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