File:Voith schneider animation.gif: Difference between revisions

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imported>Caesar Schinas
m (Robot: Automated text replacement (-{{CC-by-sa-3.0}} +{{CC|by-sa|3.0}}))
imported>Caesar Schinas
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== Summary ==
== Summary ==
{{Image notes wikimedia
{{Image_Details
|Description=Voith Schneider Propeller animation, showing a top-down schematic view of a six-bladed Voith Schneider propeller. The approximate force on the water of each blade is shown by a blue arrow. The net force on the water is vertically upwards, indicating that the propeller itself is moving vertically downwards relative to the water.  
| description  = Voith Schneider Propeller animation, showing a top-down schematic view of a six-bladed Voith Schneider propeller. The approximate force on the water of each blade is shown by a blue arrow. The net force on the water is vertically upwards, indicating that the propeller itself is moving vertically downwards relative to the water.  


The file was made with Pov-Ray version 3.6, with the source file:
The file was made with Pov-Ray version 3.6, with the source file:
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</pre>
</pre>
The coordinates defining the shape of the blades are generated from a [[Joukowsky profile]]
The coordinates defining the shape of the blades are generated from a [[Joukowsky profile]]
|Year created=2008
| author       = Christopher Johnson {{#if:http://commons.wikimedia.org/wiki/User:Christopher_Johnson|(http://commons.wikimedia.org/wiki/User:Christopher_Johnson)}}
|Real-named author=Christopher Johnson
| copyright    = Christopher Johnson
|Author link=http://commons.wikimedia.org/wiki/User:Christopher_Johnson
| source       = http://commons.wikimedia.org/wiki/Image:Voith_schneider_animation.gif
|Wikimedia source page=http://commons.wikimedia.org/wiki/Image:Voith_schneider_animation.gif
| date-created = 2008
|Notes=
| pub-country  =
|Other versions=
| notes        =  
| versions     =  
}}
}}


== Licensing/Copyright status ==
== Licensing/Copyright status ==
{{CC|by-sa|3.0}}
{{CC|by-sa|3.0}}

Revision as of 02:53, 22 June 2009

Summary

Title / Description


Voith Schneider Propeller animation, showing a top-down schematic view of a six-bladed Voith Schneider propeller. The approximate force on the water of each blade is shown by a blue arrow. The net force on the water is vertically upwards, indicating that the propeller itself is moving vertically downwards relative to the water.

The file was made with Pov-Ray version 3.6, with the source file: 

#include "colors.inc"          
#include "shapes.inc"
#macro airfoil()
union
{polygon
{
120,
<2.032241, -0.015403>, <2.033186, 0.002328>, <2.029376, 0.019655>, <2.020798, 0.036480>, 
<2.007448, 0.052705>, <1.989329, 0.068240>, <1.966455, 0.082997>, <1.938845, 0.096893>,
 <1.906529, 0.109851>, <1.869547, 0.121803>, <1.827947, 0.132683>, <1.781785, 0.142438>, 
<1.731128, 0.151018>, <1.676052, 0.158386>, <1.616643, 0.164512>, <1.552998, 0.169374>, 
<1.485222, 0.172964>, <1.413433, 0.175281>, <1.337759, 0.176334>, <1.258339, 0.176146>, 
<1.175324, 0.174747>, <1.088878, 0.172180>, <0.999175, 0.168497>, <0.906403, 0.163761>, 
<0.810764, 0.158046>, <0.712472, 0.151432>, <0.611756, 0.144010>, <0.508857, 0.135880>, 
<0.404031, 0.127146>, <0.297549, 0.117920>, <0.189695, 0.108317>, <0.080768, 0.098457>, 
<-0.028922, 0.088460>, <-0.139048, 0.078448>, <-0.249273, 0.068540>, <-0.359249, 0.058851>, 
<-0.468615, 0.049493>, <-0.577002, 0.040570>, <-0.684035, 0.032176>, <-0.789332, 0.024397>, 
<-0.892507, 0.017305>, <-0.993173, 0.010960>, <-1.090945, 0.005405>, <-1.185441, 0.000670>, 
<-1.276287, -0.003234>, <-1.363118, -0.006310>, <-1.445582, -0.008582>, <-1.523342, -0.010087>, 
<-1.596081, -0.010879>, <-1.663504, -0.011030>, <-1.725337, -0.010622>, <-1.781336, -0.009751>, 
<-1.831284, -0.008524>, <-1.874995, -0.007055>, <-1.912315, -0.005464>, <-1.943121, -0.003875>, 
<-1.967325, -0.002414>, <-1.984873, -0.001203>, <-1.995742, -0.000362>, <-1.999942, -0.000005>, 
<-1.997516, -0.000238>, <-1.988536, -0.001154>, <-1.973103, -0.002838>, <-1.951344, -0.005359>, 
<-1.923410, -0.008775>, <-1.889478, -0.013125>, <-1.849740, -0.018435>, <-1.804411, -0.024716>,
 <-1.753718, -0.031961>, <-1.697903, -0.040152>, <-1.637220, -0.049252>, <-1.571931, -0.059213>, 
<-1.502307, -0.069974>, <-1.428623, -0.081463>, <-1.351159, -0.093597>, <-1.270198, -0.106283>, 
<-1.186023, -0.119424>, <-1.098920, -0.132912>, <-1.009171, -0.146639>, <-0.917059, -0.160490>, 
<-0.822862, -0.174350>, <-0.726857, -0.188103>, <-0.629318, -0.201632>, <-0.530513, -0.214825>, 
<-0.430707, -0.227568>, <-0.330162, -0.239755>, <-0.229131, -0.251282>, <-0.127866, -0.262051>, 
<-0.026614, -0.271972>, <0.074387, -0.280959>, <0.174900, -0.288935>, <0.274696, -0.295831>, 
<0.373550, -0.301584>, <0.471242, -0.306142>, <0.567561, -0.309462>, <0.662297, -0.311507>,
 <0.755248, -0.312252>, <0.846218, -0.311679>, <0.935015, -0.309781>, <1.021455, -0.306557>, 
<1.105359, -0.302018>, <1.186554, -0.296182>, <1.264873, -0.289076>, <1.340155, -0.280734>, 
<1.412246, -0.271199>, <1.480999, -0.260522>, <1.546271, -0.248760>, <1.607929, -0.235976>, 
<1.665845, -0.222243>, <1.719898, -0.207635>, <1.769974, -0.192235>, <1.815967, -0.176129>, 
<1.857778, -0.159408>, <1.895313, -0.142167>, <1.928490, -0.124504>, <1.957230, -0.106520>, 
<1.981465, -0.088317>, <2.001133, -0.069999>, <2.016181, -0.051671>, <2.026563, -0.033437>
    pigment {rgb <0,0,0>}
	translate <-.5,.1,0>
}
disc
{
	<0,0,.001>,<0,0,1>,.1
	pigment{rgb <1,1,1>}
}
}

#end
#macro arrow()
polygon
{
	8,
	<-.5,-.5>,<.5,-.5>,<.5,2>,<1.2,2>,<0,3.2>,<-1.2,2>,<-.5,2>,<-.5,-.5>
	pigment {rgb <0,0,1> transmit 0.5}
}
#end 
#macro prop_element(ang,xofs,yofs,rad)
union
{
object
{
	airfoil()
	rotate z*90
	rotate z*-ang
	rotate z*180*atan2(sin(ang*pi/180.0)-yofs,cos(ang*pi/180.0)-xofs)/pi
	translate x*rad
}
object
{
	arrow()
	//scale <cos(ang*pi/180),cos(ang*pi/180),1>
	scale <.5+cos(ang*pi/180),.5+cos(ang*pi/180),1>
	scale .6
	translate z*.3
	rotate z*-ang
	translate x*rad
}
polygon
{
4,
<.4,0>,<-.4,0>,<-.1,rad>,<.1,rad>
 pigment {rgb <.6,.6,.6>}
translate z*-.1
	rotate z*90
}
	rotate z*ang
}
#end
#macro prop(xofs,yofs)
union
{
#declare ang=0;
#while (ang<360)
prop_element(ang+clock*6,xofs,yofs,5)
#declare ang=ang+60;
#end
disc
{
	<0,0,.002>,<0,0,1>,.6
	pigment{rgb <1,1,1>}
}
disc
{
	<0,0,.001>,<0,0,1>,1
	pigment{rgb <.6,.6,.6>}
}
}
#end

camera

{

   	orthographic
	location <0,0,10>
	right <15,0,0>
	up <0,15,0>
	look_at <0,0,0>


}  

light_source

{

	<0,0,40>

	White *2

	shadowless

}   
background {rgb <1,1,1>}

prop(.85,0)

Pov-Ray was executed with the command 

povray +KFF10 +KI0 +KF9 +A0.1 +W240 +H240 -GA vs.pov

The coordinates defining the shape of the blades are generated from a Joukowsky profile

Author(s)


Christopher Johnson (http://commons.wikimedia.org/wiki/User:Christopher_Johnson)
Copyright holder


Christopher Johnson
See below for license/re-use information.
Source


http://commons.wikimedia.org/wiki/Image:Voith_schneider_animation.gif
Date created


2008
Country of first publication


Please edit this page and add the country of first publication, or note that it is unknown.
Notes


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Other versions


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Using this image on CZ


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{{Image|Voith schneider animation.gif|right|350px|Add image caption here.}}
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Licensing/Copyright status

This media, Voith schneider animation.gif, is licenced under the Creative Commons Attribution-ShareAlike 3.0 Unported License

You are free: To Share — To copy, distribute and transmit the work; To Remix — To adapt the work.
Under the following conditions: Attribution — You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). Share Alike — If you alter, transform, or build upon this work, you may distribute the resulting work only under the same, similar or a compatible licence.
For any reuse or distribution, you must make clear to others the licence terms of this work (the best way to do this is with a link to this licence's web page). Any of the above conditions can be waived if you get permission from the copyright holder. Nothing in this licence impairs or restricts the author's moral rights.
Read the full licence.

File history

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Date/TimeThumbnailDimensionsUserComment
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