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Feliks · #**241** 09-15-2011, 05:11 AM

Is marriage Underground Windmill of Tesla's Turbine is the optimum solution?

several cases that support the solution

Nikola Tesla CD Turbine. - YouTube

Tesla Turbine (Bladeless) - from gyroscope.com - YouTube

http://www.imp.gda.pl/en/research-ce...less-turbines/

http://www.freepatentsonline.com/7695242.pdf

Andrew

flipb · #**242** 09-15-2011, 10:11 AM

Quote:

Originally Posted by Feliks

Here PhotoStream proposal, which has improved aerodynamics and a little stiffness to the system add..

some histo:

Fairey Rotodyne - YouTube

http://www.new4stroke.com/percival.pdf

http://www.new4stroke.com/AIAA-Presentation.pdf

http://tipjet.com/tj_pho_gallry.htm

Andrew

This is at the Udvar-Hazy center of the National Air & Space museum near Dulles Airport... knew I'd seen the idea before.

Feliks · #**243** 09-15-2011, 04:32 PM

Quote:

Originally Posted by flipb

This is at the Udvar-Hazy center of the National Air & Space museum near Dulles Airport... knew I'd seen the idea before.

I also watch a helicopter at the Aviation Museum in Krakow.
But my new idea is that, with the propeller did not flow and does not charge him anything for his ends. I added a completely new air ducts, OVER propeller. Additional cables are only about 1 / 3 length of the main rotor helicopter, but they are linked to it as shown in the figure. And by the propeller Main has the best designs...

http://www.muzeumlotnictwa.pl/zbiory_sz.php?ido=72&w=a

Andrew

Feliks · #**244** 09-18-2011, 10:50 PM

If you do not want to lose a large diameter fan operating in the Venturi nozzle, you should use " internal Venturi nozzles ".
These are just two cones inside a circular tube
Their convergence must be in accordance with the Bernoulli's principle, just like a normal venturi nozzle. So must be kept laminar flow. But we gain a large diameter fan. Theoretically, the energy gain obtained is 10 times larger in relation to the windmill in a narrow place of the normal venturi nozzle....
Field cross-sections must be changed in the same function as in classical venturi

Andrew

Vicegrip · #**245** 09-19-2011, 08:05 AM

Energy gain? Please explain.

Feliks · #**246** 09-19-2011, 06:40 PM

Quote:

Originally Posted by Vicegrip

Energy gain? Please explain.

formula for power is the windmill (V ^ 3 x D ^ 2 / 1530) K efficiency ratio
If we assume the K is a constant and 1530 is also a windmill power is V ^ 3 x D^2, where D is the diameter of the fan, and V the velocity of the wind.
Using the venturi nozzles traditional, increases the speed of wind in the throat of the nozzle. Let's embrace the wind speed at the inlet with a diameter of 1 meter, 5 m / sec, then in the throat with a diameter of 0.3 meter we will have about 50 m / sec wind speed. But the diameter of the fan in the throat diameter is only 0.3 input and a normal fan with which we compare the energy. reduced the diameter of the windmill to 0.3 m in the formula for power, diameter occurs in the second power. But we have gained, however, because it occurs in the formula SPEED until the THIRD POWER. So, in total pay to reduce the diameter of the windmill, to increase the speed of the wind.
And so we have a classic increase venturi.
In Venturi Nozle Inner diameter windmill not be reduced to 0.3 m, and is referred to as 1 meter. which is three times greater than in the traditional system. lifting 0,3 m to the might of the other, we obtain the result 0.09. raising to the second power of 1 m we obtain the 1 . So, the value ~ 10 times greater. Velocity at the narrowest point in both cases remains the same (50 m / sec ). that is, in the latter case, theoretically we can get 10 times more power on the windmill located inside the Inner Venturi Nozzle, than in the classical venturi nozzle.....

Andrew