Are induced currents of any concern in satellite missions?

In summary, a satellite in orbit around Earth can experience induced currents on its envelope due to changes in the magnetic field. These currents may be negligible and not a concern for engineers. However, the satellite's high speed movement can also create an electric dipole moment which can potentially protect circuits from solar flares. Induced currents may also have practical uses, such as in cubesat magnetic stabilization and electrodynamic tethers. Overall, the effects of CME's on satellites are much larger than those from other current sources.
  • #1
Yoni
65
1
TL;DR Summary
Are induced currents of any concern in a satellites mission?
A satellite in an orbit around Earth can be subjected to a changing magnetic field (due to eccentricity or angle of orbit or both) which can induce currents on its envelope.
Are these currents negligible or are they of any concern to engineers?

Also, as I understand it, the satellites high speed movement inside Earth's magnetic field would induce an electric dipole moment in the satellite (perpendicular to it's movement and external magnetic field). How would this dipole affect the satellite? Can it protect the circuits from solar flares? What if two vessels in contact detach, can they remain charged?
 
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  • #3
Thanks.
But, putting CME's aside, the induced currents (as explained above) are they of any concern for a functioning satellite?
 
  • #4
Yoni said:
But, putting CME's aside, the induced currents (as explained above) are they of any concern for a functioning satellite?
Usually that's not current, but only an electric field. It is (usually) weak and only slowly changing. It is not really a 'concern', not around Earth anyway.
However. There are actual uses:
- google up 'cubesat magnetic stabilization'
- google up 'Electrodynamic tether'
 
  • Informative
Likes berkeman

1. What are induced currents and how do they affect satellite missions?

Induced currents are electric currents that are created in conductive materials, such as satellites, when they move through a magnetic field. These currents can cause interference with satellite systems and potentially damage sensitive equipment.

2. What are the sources of induced currents in satellite missions?

The main sources of induced currents in satellite missions are the Earth's magnetic field, the solar wind, and the ionosphere. These external factors can induce electric fields and currents in the conductive materials of a satellite.

3. How do scientists mitigate the effects of induced currents in satellite missions?

Scientists use a variety of techniques to mitigate the effects of induced currents in satellite missions. This can include shielding the sensitive equipment, using specialized materials that are less conductive, and implementing active control systems to counteract the induced currents.

4. Are all satellite missions equally affected by induced currents?

No, the effects of induced currents can vary depending on the specific design and components of a satellite. Some satellites may be more susceptible to induced currents than others, and the severity of the effects can also vary.

5. Can induced currents be completely eliminated in satellite missions?

It is not possible to completely eliminate induced currents in satellite missions. However, with careful design and mitigation strategies, scientists can minimize their effects and ensure the success of the mission.

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