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Yanming Wei

Sep 3, 2017
11:31

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welcome any comment


Yanming Wei

Sep 13, 2017
07:11

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In a sense, the shutter propeller is very similar to the human powered pole propeller:

It is wel-known of the minimal disturbance to water body by pole-propeller, no wave (caused by water angular spin energy), even no water kinetics (caused by back-push).

But pole propeller is still low efficient, because the acute angle between pole orientation and water surface. And shallow river or ocean bed is a must for feasibility, obvious impossible if water too deep.

Shutter propeller also no wave effect, though some water kinetics loss.

For submarine application, the lower disturbance, the better for military purpose so as to fool sonar, just as a burglar tiptoe sneaking, but diesel engine has to run at very low efficiency then very weak torque power at low RPM, thus rotary propeller can hardly run at sneaky speed.

While sneaking, shutter propeller can still have high efficiency and even more strong force to push water back!

 

 


Yanming Wei

Sep 13, 2017
08:26

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In China, most pole propellers are made of bamboo.


Yanming Wei

Sep 13, 2017
10:14

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I don't have enough money to apply patents in those countries with small market prospect, therefore, if anyone or entity in those countries wish take advantage of exclusive rights for your max profit, you can pay me small lump-sum buyout fee (negotiable, for example, a very tiny country may only charge as low as $5K) for locally registering patent with your name as owner and me as inventor, otherwise if nobody acts, then free to use for everyone without privilege of monopoly & royalty in those small-market countries.

I can help you set the priority date for your local application. Act as soon as possible, if anyone has the great ambition in those countries, otherwise good opportunity will vanish! If interested, just send email to admin@kiwaho.com to inquiry whether your country is listed in my private give-up list.

 


Yanming Wei

Sep 13, 2017
12:58

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Mark Pence

Sep 14, 2017
03:06

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Jim Mattis may love this invention. Make America Navy Great Again!


Yanming Wei

Sep 16, 2017
06:55

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Even a 4-leg animal walking mode is similar to this 4-shutter propeller X-mode, e.g, horse gait: 

All 4-leg animals can swim, e.g. polar bear, frog, and in exact same work principle with herein 4-shutter propeller, even never trained pigs can do.

 


Yanming Wei

Sep 16, 2017
07:54

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Albert Gnadt

Sep 20, 2018
12:47

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There is no way 95% efficiency will be achieved with this system. That is a completely false claim. The mechanical losses alone will be 5%. Reliability/maintenance is a salt water environment make the design infeasible.


John Smith

Sep 29, 2018
05:51

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Nice blog keep post like this.

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