Module drag

The drag module handles drag in a very basic fashion. Do not use for high fidelity dynamics.

Structs

• ConstantDrag
  ConstantDrag implements a constant drag model as defined in Vallado, 4th ed., page 551, with an important caveat.
• Drag
  Drag implements all three drag models.

Enums

• AtmDensity
  Density in kg/m^3 and altitudes in meters, not kilometers!