Calculating Power Needed for a Machine's Flight: Tips & Tricks

In summary, the conversation discusses the relationship between power, energy, and air resistance in a flying machine. It is determined that despite losing energy to air resistance, the machine's power output remains at 60 watts. This power allows the machine to reach a height of 2230 meters in 30 minutes. The speaker is seeking advice on this problem.
  • #1
tennis38
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0
For example, if it takes 60 watts of Power for a machine to fly, yet loses (for instance) 2.5 * 10^3 Joules of its energy because of the air resistance, what's the amount of "Power" that was really given in the first place?

The time of flight for the machine is 30 minutes to get to the height of 2230 meters.

Any suggestions or tips? I've been stumped by this problem for a while now.

Thanks.
 
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  • #2
It seems that the power is still going to be 60 watts -- even though energy is being lost to air resistance, the engine of the machine is still going to be putting out that much power. So when it flies to a height of 2230 meters, it loses 2.5 * 103 J to air resistance, while also gaining potential energy. Both of these energies will be supplied by the power source.
 

Related to Calculating Power Needed for a Machine's Flight: Tips & Tricks

What is the formula for calculating power needed for a machine's flight?

The formula for calculating power needed for a machine's flight is P = F x V, where P is power, F is force, and V is velocity.

How do you calculate the force needed for a machine's flight?

To calculate the force needed for a machine's flight, you must first determine the weight of the machine and the weight of the payload it is carrying. Then, use the formula F = (m1 + m2) x g, where m1 is the weight of the machine, m2 is the weight of the payload, and g is the acceleration due to gravity (9.8 m/s^2).

What is the role of velocity in calculating power for a machine's flight?

Velocity is an important factor in calculating power for a machine's flight because it determines the rate at which the machine is moving and the amount of energy needed to sustain that movement. The higher the velocity, the more power is required to maintain flight.

What are some tips for optimizing power usage in a machine's flight?

Some tips for optimizing power usage in a machine's flight include reducing weight as much as possible, using aerodynamic designs, and minimizing friction. Additionally, maintaining a steady and efficient velocity can help conserve power.

How can different variables, such as air density and temperature, affect power calculations for a machine's flight?

Air density and temperature can affect power calculations for a machine's flight because they impact the amount of resistance and lift that the machine experiences. Higher air density can increase resistance, requiring more power to overcome, while higher temperatures can decrease air density, allowing for more efficient flight. These variables should be taken into consideration when calculating power needed for a machine's flight.

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