Aerodynamics of Air Hockey *
AbstractIf you have an air hockey table, you know that the puck floats on a thin cushion of air when the table is turned on. With little friction, the puck can travel very fast. How much lift force is created by the air? Add small amounts of weight to the puck and see when it no longer floats to measure the lift force. How many air holes (on average) support the puck? How much force is generated by each air hole? Will a puck with a larger surface area, supported by more air holes (on average), support more weight in proportion to its area? (Remember to include the weight of the puck in the measurement.) Make your own test shapes by cutting thin cardboard or polystyrene sheet (from a hobby shop, or use old CD cases). Is lift generated if the puck has a rough surface? Tape sandpaper on one side of the puck, test, then flip it over as a control. What about other surfaces (different types of cloth, for example)?
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Last edit date: 2017-07-28
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