Orbit cranking a.k.a.

orbit pumping is a process that changes the

plane of an

orbit while keeping the

altitude the same. Orbit cranking requires a lot of

propellant and is not a very

efficient method to get into a desired

orbit.

The required delta-v for orbit cranking is given in the equation below.

del_v = 2 Vcsin(alpha/2)

Where Vc is the velocity required to maintain the current altitude.

Alpha is the desired change in orbital inclination (in radians, not degrees)