Energy of Fan Blade: Calculating Speed and Strength

  • Thread starter Colin De Bruy
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In summary, the fan discussed in this conversation was built by Universal Hovercraft for the purpose of a small hovercraft for kids. It is powered by a 5hp petrol motor with a top rpm of 3000. At this speed, the tip of the fan can reach 339km per hour while the inner root of the blade can reach 169km per hour. The question posed was about the energy of a 200gram pine blade if it were to break off at this speed. This information can be found on the Wikipedia page for rotational energy.
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Colin De Bruy
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Thanks to all who posted. The fan was built by Universal Hovercraft it's purpose built for a small hovercraft designed for kids to ride on. The fan is driven by a 5hp petrol motor which has a top rpm of 3000 rpm. I doubt the engine will get to this rpm with the fan attached but at 3000rpm the tip of the fan is doing 339km per hour or 210 mph and the inner root of the blade is doing 169km or 105mph. So does anyone know how much energy a 200gram pine blade has if it were to break off at this speed? Many thanks Colin
 
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Related to Energy of Fan Blade: Calculating Speed and Strength

What is the purpose of calculating the energy of fan blades?

Calculating the energy of fan blades allows us to determine the speed and strength of the fan, which is important for understanding its performance and efficiency.

What factors affect the energy of fan blades?

The energy of fan blades is influenced by several factors including the size and shape of the blades, the speed of rotation, and the air resistance they encounter.

How is the speed of a fan blade calculated?

The speed of a fan blade can be calculated by dividing the distance traveled by the time it takes to travel that distance. This can be measured using a tachometer or by counting the number of rotations per minute.

What units are used to measure the strength of a fan blade?

The strength of a fan blade is typically measured in watts or horsepower, which represent the amount of energy it can produce or the amount of work it can do per unit of time.

How can the energy of fan blades be optimized?

The energy of fan blades can be optimized by using materials and designs that reduce air resistance, increasing the speed of rotation, and ensuring proper maintenance and balance of the fan.

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