I'm building a model wind turbine. I'm using thttps://www.vernier.com/products/kidwind/wind-energy/kw-wth3/ as the hub/the base. That's the only kit I'm allowed to use. I'm supposed to decide on the blade size, etc. THE RULES: . Students will will sign up for a time slot and test their own devices in front of the judges. Students will have 30 seconds to set up prior to testing. 3. The device must pass a GO-NO-GO inspection including a safety inspection to insure no harm or damage will occur. Any unsafe devices WILL NOT BE TESTED and be counted as a disqualification. 4. The device must meet the following specs: • Stand Height: 24 in (must use stand with gear box system provided by GATSA) • Maximum blade diameter: 36 in • Maximum number of blades: 12 • 4 Box fans will be used to create a wind tunnel (2 fans on bottom with 2 fans on top). Wind tunnel will be 48inx48inx48in cube open on the back • Voltage will be measured using a multimeter attached to the generator leads • Student will have three opportunities and the three voltages will be averaged. • Award places determined by voltage ranking • Ties will be broken by testing efficiency of the wind turbine What I need is not a step-by-step of how to build one. I'd appreciate tips and basic principles. Thank you for reading.