Would blades inspired by palm trees be suitable to AWES?

The following links describe a method for lighter and larger blades working like palm trees in order to be resilient from high winds.


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Perhaps some applications in AWES could be imagined, knowing the global loads issue could be mitigated with appropriate bridling, starting with a central line for the hub. Then several options would include torque transfer TRPT rotor in @Rodread’s way, or yo-yo mode (recovery phase by the third position). Perhaps keeping lift (without lifter kite) would be possible with a cyclically controlled bridling.

This topic could also be connected to Info on different methods for making rigid propellers, wind turbine blades, wings and similar.

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Old concept ladies. Often imitated, sometimes duplicated, but so far they haven’t caught on. A company called “The Wind Turbine Company”
http://www.windturbinecompany.com/technology.html
raised funding about 15 years ago and built a very large prototype near a friend of mine’s house in Lancaster, California. This turbine quickly destroyed itself. One more example of building a big version before you have a proven small version. Since wind is invisible, would-be designers can imagine whatever optimal, problem-free behavior they wish for, but their wishes often do not reflect real-world behavior. The turbine I mentioned ended up as a heap of scrap on the ground. Two-bladed rotors spin even faster than 3-blade rotors. The tower’s “wind shadow” hits the blades like a hard “smack”, ripping the machine apart.

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The search term segmented ultralight morphing rotor gives these results, among many others.

Models used for the simulation and control of a segmented ultralight morphing rotor (SUMR)

https://arc.aiaa.org/doi/10.2514/6.2019-1298 | https://arc.aiaa.org/doi/10.2514/6.2019-1299

https://arc.aiaa.org/doi/pdf/10.2514/6.2012-3270

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