Handout:
Name:
*Created by Mike Winston, Shelley School District*
Blade Design Challenge/Voltage DRAFT
Objectives:
1. Learn about alternative energy sources
2. Learn how to conduct experiments with controls and variables
3. Understand the differences in blade design for electrical output
4. Have fun
Materials Needed:
1. Wind turbine
2. Blade material
3. Fan
4. Multi meter
Procedure
1. Decide on blade material
2. Design your blades
3. Make rough adjustments
4. Record results in table 1
5. Make fine adjustments
6. Record results in table 2
7. Complete challenge and fill in class results
Results
1. Which design produced the greatest voltage?
Number of blades:
______________
Mass of blades:
______________
Length of blades:
_______________
Pitch of blades :
________________
Other factors:
Table one - Rough adjustments
Adjustment
Output
2 blades
3 blades
4 blades
Other
Blade length
Blade mass
Table two:
Fine adjustment
Adjustment
Pitch
Other Adjustments
Output