SunPlower Propeller technology is based on a 100-year-old forgotten propeller concept: Kirsten Boeing Propeller (KBP) by German Professor: Frederick Kurt Kirsten. Even though it was the most efficient propulsion technology, it was not adopted due to huge hub size (not scalable), and also it is not optimal for a small RPM range of ICE engines. These are the 2 main reasons (huge hub & need for wide RPM engine) why this efficient propulsion was forgotten and ignored for 100 years.
SunPlower Propeller is the world’s first (PCT patent filed) to make this in a compact and scalable hub (impossible for 100 years). KBP is more efficient than screw propellers and far more efficient and older than Voith Schneider Propeller (VSP). KBP info at NASA website:
ICE engines are optimal for a small range of RPM, and cannot start under load - clutches and gearboxes (eliminated in EVs) are used for decoupling starting load and also for variable RPM/torque in automobiles. In aviation, shipping & marine industries, the variable pitch propellers were used to run at ICE's optimal RPM without clutches and gearboxes (VSP was developed for ICE engines - even though its efficiency is the worst of all and more complex of all).
Now with electric motors (wide RPM range), we can not only eliminate the need for variable pitch propellers but also eliminate the need for complex swashplates (stress plates) in Helicopters (circular path) and also in VSP (cylinder path) for "Thrust Vectoring".
SunPlower Propeller Technology is the world's first compact scalable 2-D directional thrust propeller.
SunPlower Propeller blades push the fluid (air/water) similar to birds and fishes (no fluid screwing like screw propellers). This creates less turbulence, which makes this low noise technology optimal for UAM and also optimal for stealth mode military planes and submarines.
World's First Compact Directional Thrust propeller:
During Vertical take-off/landing air is pushed down, providing vertical thrust.
Blade's pitch direction is changed to change the direction of thrust.
Allowing quick switch to horizontal thrust mode for fast flight.
Why Mobile Tower operators want this technology now?
Half of the world has no internet, due to the lack of a grid or stable grid. They run on diesel generators, which is polluting the environment and also very expensive (50-70 ct/hr).
Solar is dirt cheap, but cleaning dirt on solar panels is very expensive. SunPlower Propeller is the world's first self-cleaning & self-cooling blades (watch video). It's still economical to run flexible solar panels on blades (always half of the area of the blade is exposed to direct sunlight, rest indirect light) which eliminates the solar tracker and also reduces maintenance cost.
Existing wind turbines wasted drag/thrust force on the mast is huge, and it's challenging and more expensive to mount it in an optimal configuration. SunPlower propeller uses both lift and drag (relatively less force on the mast, close to the base) and it has the smallest footprint and almost no clearance to the base requirements. Depending on the site requirements, operators are willing to choose either an independent mast or strengthen the mobile tower mast to add SunPlower propeller.
Customers don't care much about efficiency (+/-5%), they care for the value added by SunPlower propeller, which is solving the problem effectively.
Wind Turbine Applications:
Building roofs, corners, mountain slopes
Mobile phone tower power
Remote power for highways & agriculture
Small & Medium scale industry
Scalable to Off-shore turbines with supporting strings