Data From a Previous WaterWheel Competition
|
Team |
N Vanes |
Radius
(cm) |
Thickness
(cm) |
Water
Used (Iiters) |
Weight
Raised (N) |
Distance
Lifted (m) |
Time
(minutes) |
PI |
|
1 |
26 |
10 |
6 |
12.8 |
2.2 |
4.54 |
5 |
4.94 |
|
1 |
26 |
10 |
6 |
12.8 |
2.2 |
5.15 |
5 |
5.60 |
|
2 |
12 |
13.75 |
5.9 |
13.1 |
3.3 |
5 |
5 |
8.78 |
|
2 |
12 |
13.75 |
5.9 |
12.5 |
3.3 |
6.4 |
3.5 |
11.38 |
|
3 |
16 |
15 |
6 |
13.25 |
3.3 |
6.3 |
3.45 |
9.32 |
|
3 |
16 |
15 |
6 |
13.25 |
3.3 |
6.3 |
3.45 |
9.32 |
|
4 |
16 |
15 |
4.5 |
12.5 |
3.3 |
6.4 |
3.3 |
10.91 |
|
4 |
16 |
15 |
4.5 |
11 |
3.3 |
6.4 |
3.3 |
11.26 |
|
5 |
16 |
14.8 |
5.5 |
10 |
3.3 |
6.4 |
3.19 |
10.63 |
|
6 |
12 |
15 |
4.8 |
12 |
3.3 |
6.2 |
3.05 |
11.31 |
|
6 |
12 |
15 |
4.8 |
10 |
3.3 |
6.4 |
3.02 |
12.22 |
|
7 |
16 |
15 |
4.3 |
11.5 |
3.3 |
6.4 |
3.29 |
11.36 |
|
7 |
16 |
15 |
4.3 |
11 |
3.3 |
6.4 |
3.46 |
11.48 |
|
8 |
12 |
10.5 |
5.8 |
12 |
2.2 |
6.4 |
3.04 |
9.63 |
|
8 |
12 |
10.5 |
5.8 |
17.4 |
3.3 |
6.4 |
4.35 |
12.58 |
Performance Index (PI) = (weight raised * distance) / (cost of material,
manufacturing, and water)
Costs are estimated as follows:
· Styrene foam: 0.00025 $ / cm3
· Manufacturing: 0.04 $ / vane
· Water: 0.04 $ / liter