- #1

Chenkel

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- TL;DR Summary
- I give the example of an airplane, where the rudder causes a torque about the center of mass of the airplane, how does this effect the momentum vectors for the engines?

Hello everyone!

So I've been studying gyroscopes, and see that a torque about the shaft alters the momentum, we can find the new momentum vector by finding the torque, multiplying by a small amount of time, and finally adding that vector to the momentum vector. This will create a precession for torques not colinear with the momentum vector.

This makes me wonder what happens to the momentum vector about A when the torque is not applied about the point A, but is instead applied off center at some point B. An example is an airplane, the engines have momentum vectors pointing in front of the plane (this might be a simplification of what really happens, if you want to enlightenment me, feel free to reply.) As the plane turns the rudder applies a torque to the center of mass. I'm wondering what happens to the momentum vectors of the engines, there seems to be a change in direction of the momentum vectors, and I'm thinking the torque vectors causing the change in momentum of the engines must not be colinear with the momentum vector of the engine, because the momentum vectors for the engines are changing direction.

How does the rudder create these torques to the engine, and does the housing of the engine have to be strong to resist these torques.

Hopefully this question isn't too difficult to answer, I'm looking forward to replies, if you have some wisdom you can shed on this issue it will be greatly appreciated, thank you!

So I've been studying gyroscopes, and see that a torque about the shaft alters the momentum, we can find the new momentum vector by finding the torque, multiplying by a small amount of time, and finally adding that vector to the momentum vector. This will create a precession for torques not colinear with the momentum vector.

This makes me wonder what happens to the momentum vector about A when the torque is not applied about the point A, but is instead applied off center at some point B. An example is an airplane, the engines have momentum vectors pointing in front of the plane (this might be a simplification of what really happens, if you want to enlightenment me, feel free to reply.) As the plane turns the rudder applies a torque to the center of mass. I'm wondering what happens to the momentum vectors of the engines, there seems to be a change in direction of the momentum vectors, and I'm thinking the torque vectors causing the change in momentum of the engines must not be colinear with the momentum vector of the engine, because the momentum vectors for the engines are changing direction.

How does the rudder create these torques to the engine, and does the housing of the engine have to be strong to resist these torques.

Hopefully this question isn't too difficult to answer, I'm looking forward to replies, if you have some wisdom you can shed on this issue it will be greatly appreciated, thank you!