Atmospheric drag is a form of drag, which is the force that opposes an object moving through a liquid or gas.
In astrodynamics depending on the situation atmospheric drag can be regarded as inefficiency requiring expense of additional energy during launch of the space object or as a bonus simplifying return from orbit.
Atmospheric drag - Calculation.
Atmospheric drag can be calculated as follows:
where: cdIncluding:
Atmospheric drag can be calculated as follows:
where: cd is the body's coefficient of drag (that has to be determined experimentally), A is the body's cross-sectional area, ρ is the air density, and v is the body's velocity.
...
