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This work aims to explore how the charge drag coefficient of satellites varies with solar cycle conditions.

January 18, 2026Space WeatherOpen Access

Variations in Satellite Charge Drag Coefficient With Solar Cycle

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This work aims to explore how the charge drag coefficient of satellites varies with solar cycle conditions.
Analyzed ion and electron densities and temperatures during solar minimum and maximum.
Selected specific months, August 2008 and January 2014, for simulations.
Utilized pdFOAM, an electrostatic particle-in-cell code, for simulations.
Charge drag coefficient increases with altitude.
Variations are more pronounced during solar minimum than solar maximum.
Charge drag force can be twice as high at 1,000 km altitude compared to neutral drag force.

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Investigates variations in charge drag coefficient in low Earth orbits, indicating significant implications for satellite lifespans.

Fazel‐Najafabadi et al. (2026) studied this question.

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