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Let's make a Vertical Axis Wind Turbine!
free webapps for the Darrieus H-Rotor VWAT
H-Rotor arm length: 1.0 metres
file
motor / generator
airfoil blade
hub
H-Rotor VWAT
to controller
arms
MM
2016
 
The H-Rotor VAWT (Vertical Axis Wind Turbine) has no tail, furling system or slip rings (electrical rotary joints), the vertical configuration is capable of generating power at very high efficiencies (see ref.1). It has few parts and a fast build-time, the airfoil blades take less than 30 minuites to construct with a belt sander.
The H-Rotor VAWT has two airfoil blades, two arms, hub, electric generator, motor and braking system.

The controller monitors the wind speed with an anemometer and uses the motor to self-start the wind turbine in low wind speeds. The brake is activated during high wind speeds to prevent self-destruction.


anemometer
airfoil blade
This page will assist in the design and consruction of Darrieus H-Rotor airfoil blades.
BACKGROUND
NACA0012
Airfoil
Rotor Solidity
 
 
wind speed (m/s)
NACA0012
1.5m
( 4.8ft )
1.0m
( 3.3ft )
( 5.91in )
150 mm
Length
Thickness
( 0.71in )
18mm
use the + / - to select your wood thickness and length
wood airfoil designer
(x2)
Controls
WAD β1
VVAWTβ1 
WARNINGS
MOTOR / BRAKE
?
Beaufort 1 : 1m/s, 10km/hr, 24MPH
Set wind speed:
%
km/hr
Watts
Your browser does not support the HTML5 canvas tag.
Sander1
sander2
Auto
Wood_Simulator_v0.1 If you're seeing this your web browser doesn't support the <canvas>> element. Ouch!
mm
mm
in
A
B
C
D
E
F
22.1
5.4
76.5
8.9
62.2
72.5
2.86
2.45
0.7
3.01
0.42
0.87 
Sander1
Dimensions:
Step 1 - start with a 18 x 150 mm wood plank
mouse-step-input If you're seeing this your web browser doesn't support the <canvas>> element. Ouch!
18mm
150mm
x
5.91in
x
0.71in
(
)
Draw A and B lines (shown above) on your piece of wood with a pencil.
Detail:
SimWood β1
Download  as .PDF
Background video : NASA,"All Alone in the Night - Time-lapse footage of the Earth as seen from the ISS", 2011
1.
H-Rotor aerofoil efficiency data : U.S. Department of Energy,"Darrieus Wind Turbine Airfoil Configurations", Solar Energy Research Institute, June 1982
Beaufort deawings : “Over thousands of years sailors have learnt to estimate the speed of the wind just by looking about. This technique matured into what we now call the Beaufort Scale. The universe tells you everything you need to know about it as long as you are prepared to watch, to listen, to smell, in short to observe.”…. Howtoons 2006
2.
3.
References
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