How Do You Calculate Torque and Power for Rotating an Antenna?

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SUMMARY

To calculate the torque and power required for rotating an antenna with a mass of 1.5 kg and a moment of inertia (Iyy) of 0.0255 kg·m², first determine the angular momentum by multiplying the angular velocity (w) of 50 degrees/second by the moment of inertia. The torque can be derived from the relationship between angular momentum and angular acceleration (a) of 400 degrees/second². Finally, the power requirement is calculated by multiplying the torque by the angular velocity.

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kalaianand
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Hello friends...
I have an small antenna( irregular shape) , mass about 1.5 Kg (about CG), the moment of ineria about spinning axes(Iyy) is 0.0255kg.m^2. product of inertia also known (Ixy, Iyz, Ixz).
Required angular velocity (w) = 50 deg/sec
angular acceleration (a) = 400 deg/sec^2
The rotation axes is 3mm away from the CG of the antenna. If want to rotate the antenna in the both the direction for every 1hr. How to find the torque and power requirement to rotate it.
Please any suggestions...


Thanks in advance
 
Physics news on Phys.org
.To find the torque required to rotate the antenna, you will need to calculate the angular momentum of the antenna. This can be done by multiplying the angular velocity (w) and the moment of inertia (Iyy). The angular momentum is then equal to the product of the torque and the angular acceleration (a). The power required to rotate the antenna can then be calculated by multiplying the torque and the angular velocity (w).
 

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