Wind Generator Project Introduction to Engineering The use of the wind to perform work is one of the most ancient energy technologies. Interestingly, it is among the most promising options to reduce our current dependence on fossil fuels in the future. In this project, you and your partner will design and construct a wind-driven device which will be mounted on a test stand for the purpose of generating electricity. YOUR GOALS: Design a wind-driven device that produces the greatest amount of electrical power. Investigate and report on the impact of one characteristic of your design. You must identify one characteristic of your generator and collect enough data to demonstrate that your change has indeed improved the electrical performance of your device. For this you must collect enough data so that t- testing can be employed as a means of determining whether your improved design is true that -- improved. THE PROCESS (AS A TEAM): 1. Complete a preliminary plan (10 points). This written plan must: a) List all of the things you think might impact the efficiency of your design. b) Include a sketch of your first design. c) Include a sketch of what you believe your second design might be. d) List the change(s) you intend to make between your two preliminary designs. Remember here that to learn the impact of any given change, you must change just that one thing, keeping all other parameters constant. (It is acceptable if you later change your minds and change your second design from your first, but before you get started we want to at least see your initial plan and thoughts). 2. Create an A+CAD drawing(s) of your initial design (20 points). This drawing(s) should fully communicate to someone else how your wind generator is to be constructed SO THAT THEY DO NOT NEED TO ASK YOU ANY CLARIFYING QUESTIONS. Your drawing(s) should include such information as Materials to be used How materials will be connected Material size and dimensions As many views as necessary to allow complete construction of your design BY SOMEONE OTHER THAN YOURSELF. Use appropriate scales to fully use the paper you are printing on. Your instructors will inform you as to what size paper to print on (currently there is an issue printing on 11x17-sized paper). 3. Build your initial design and test it within the school’s wind tunnel (20 points). Complete a test report from this initial test for each trial that includes: a) The generator RPM b) The total current produced (in Amps) c) The total potential difference produced (in Volts) d) The total power generated (Power = I x V). 4. BEFORE MODIFYING YOUR DESIGN, complete this EVALUATION #1 (10 points): a) A description of how well the testing went (only necessary to do once for each design). b) A description of what you learned during your testing. c) A description of what you will be attempting to modify when you test again. 5. Continue to revise your design (30 points). Complete a test report (#3 listed above) each time you test your wind generator in the wind tunnel. At minimum, each group must take enough tests for at least two designs so that the two designs can be compared via t-testing. The most successful groups will likely have many additional tests as well. 6. Submit a final written report (30 points). This report should include: a) As-built A+CAD drawings for the design producing the highest power output. b) All your test reports (compiled in a neat, organized manner). c) A discussion of your certainty as to the difference in the performance of your designs (you must refer to and utilize the results of your t-testing). d) Your maximum power output clearly labeled on your report. MISCELLANEOUS: Materials- Particle board, some thin plywood, Masonite, pine strips, wooden dowels, nails, screws and glue will be available for this activity. You may use materials from home with instructor approval. The team realizing the highest power output (which must be observed by an instructor) will receive 20 bonus points of extra credit each.