Last week in lab on Thursday, the group began investigating the math behind gear ratios and how sets of gears relate to each other when connected. Gear or speed ratio is the angular velocity of the input gear over the angular velocity of the output gear. It can also be expressed as the number of teeth on the input gear over the number of teeth on the output gear.
The group decided on the gear ratios for each of the three speeds at which the gears will function and downloaded CAD drawings of each of these gears to assemble.
The fan blade design continues to be adjusted and improved as more research is conducted on how best to shape them.
Some photos of the group members at work:
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| Kory assembles gears on a gear shaft |
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| Sam C. experiments with gear spacing along multiple shafts |
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| Sam V. tweaks the fan blade design as the group develops new ideas |
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