Wind Racers

Research: Before making our wind racers we took time to research about different designs first. Our research was about different sail designs that we could use in order to make our racers faster.

Design: Our design was a triangular sail. This is because of us thinking that since the triangle has equal sides then this must help.

Build:

Materials:
-Cardboard
-Tape

In order to build our sail:

1. Cut out 2 pieces of cardboard into a triangle.

2. Stick the 2 pieces of cardboard onto the pole.

3. Make sure it's stable.

Test:

Our wind racer didn't do so well when it came to the distance because it only went 12cm, but the time it stopped moving was 6 seconds.

Redesign/Changes:

We didn't change the shape of our sail because we thought that the reason our sail didn't work was that we placed the sail the wrong way. So we kept the same shape of the sail but added a rectangular piece of cardboard in the middle of the sail for more stabilisation. 

Test:

Our second test went much better as the distance our wind racer covered was 50cm.

Evaluate: We think that our wind racer didn't work as well as the other wind racers because as we turned on the leaf blower, all of the weight of the cardboard sail accelerated downwards so our "car" went straight down. 

Overall we think that the activity was fun even though our racer didn't win.