Differential vertical Wind Turbine and vertical Parallel Propeller
A differential vertical wind turbine (DVWT) uses a sun gear to control plural planetary gears of the blade assemblies. The sun gear has half circumference of its teeth removed. At teeth removed zone, each blade assembly is free to rotate and the blade has the center of pressure located at its tail section. During its revolving, wind pressure forces it align to the wind with a minimum drag. At teethed zone, the sun gear drives each planetary gear to rotate with the blade increasing its angle of attack towards the incident wind therefore to increase the receiving wind energy and output torque.
The goal of a differential vertical wind turbine is to optimize the pressure difference between the downwind and the upwind blades, therefore to optimize the output torque.
A vertical parallel propeller uses the similar principle to propel the fluid in uni-direction with minimum turbulence losses. Please read the attached tech brief for details.
Attached files:Differential turbine and Parallel propeller.pdfKC 701 US11199176 B1 Cheng.pdf差動風車及平行動推進器 3.pdfTech brief for wind transformer.pdfPatents:
US 111,991,761 issued 2021-12-14 [MORE INFO
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