You will receive a variable to study. Follow the steps below:
Step 1: Creating a file
On a Google Sheets, Google Slides, or Google Docs file (your choice)
, type in the title “Wind Turbine Project” followed by
- Your assigned variable,
- Your first name and last initials of all the members in your group,
- State your hypothesis, and then …
- Describe in 1 to 4 sentences how you intend to conduct your experiment.
- Finally, devise at least 2 to 5 questions that might help guide you through the research. Click on the picture to the right to see what yours should look like. Note: Only one person in the group needs to create the file; however, it should be ‘shared’ with not only the other team members so anyone can work on it. Please include the names of the group members.
Step 2: Confirmation
- Making sure your file has all the information asked for
- Have the teacher come over to check your work, have a short discussion with you, and then confirm that you can go on or ask you to make changes
STOP! Before you go on, ALL students MUST watch the safety video on using the utility knives and then take the quiz.
Step 3: Starting with the DEFAULT blade
ALL GROUPS must start with making and testing of a DEFAULT blade. Get a hub and dowel rods from teacher. FYI: You will be keeping all materials in your shoe boxes. As a group, watch the first minute of this video
Using utility knife, metal ruler, safe-t-cut straight edge, and cutting board, cut out the rectangular, cardboard blades (1-3/8″”x4″-trace the width from the classroom metal rulers) for your research turbine. Most groups will be doing 2 blades. Note: some groups like blade shape, tip shape – you will be taking the dowels off of your blades. The trick to making this work is using ‘dots’ of glue instead of ‘streams’.
Measure and mark a line on your dowel rod 3-1/2″ from one end. Do this for all your dowel rods. Using hot glue, hot glue one dowel rod per blade. Put the end of the blade on 3-1/2″ pencil mark. Make sure the dowel is centered width-wise. Wait 5 minutes before putting blades/dowels into hub
Step 4: Testing Research Blades
- Put dowels into hub. Make sure the dowel is all the way in.
- Face the dowel to the rear of the hub, which will be downwind, which is known as the leeward side.
- Watch this video about using the Pitch Tool. Use the pitch tool to set each blade to approximately negative 20 degrees.
“Sketch” a frequency table in your composition book, using the diagram below. Put in your own variables as it pertains to your research variable. You only need to record the max mWatts (not the Volts and Amps)
- Take your blades/hub to the teacher to check your pitch
- Go to the wind tunnel with your turbine, your composition book with the chart, and a pencil. Gently place your turbine on the test stand. You do NOT have to push it in tightly.
- All students MUST wear safety glasses when at or within 5 feet of the wind tunnel. Turn the fan on – twist the on/off knob ‘one click’ so that its pointer is pointing towards the GREEN tape, for the highest speed.
- After the fan has been turning for a few seconds and your turbine blades are turning, click the green COLLECT button on the computer. Data will be automatically collected for 10 seconds and then automatically stop.
- Transfer JUST the number in the max mW column to the frequency table in your composition book
- Change the variable as you planned and test again. You should aim to have around 3 to 10 ‘samples’ or tests. For instance, if you’re testing length, you might get data on a 12 inch blade, 10 inch, 8 inch, 6 inch and 4 inch.
Step 5: Creating a Chart from the Collected Data
Use either Google Sheets or Microsoft Excel to create a table and then a chart to use in your presentation.
Create a new Google Sheets. Input your data and create a chart of your choice. Copy and paste both the chart and the table and paste into your presentation file.
Step 6: Organizing your Presentation
Put the picture of the table/graph into your presentation that you started on STEP 1. Below the picture of the chart,
- Type in your recommendations concerning your variable
- Type in any ‘flaws’ that you think may have effected the outcome of your research
Here’s a general idea of what your presentation should look like:
Step7: Give your Presentation
Cover the information that you have on your presentation. Presentations should be 60 seconds to 3 minutes long. All team members are expected to participate.
These presentation will most likely be video taped and could possibly be put up on our YouTube Channel. Dress nicely and take this seriously.