OrbMnvrPhaseChange:

Path: Orbit/OrbitManeuver

% Computes the delta-V for a phase change.
 The velocity change is tangent to the orbit. The separation angle is
 positive when the interceptor leads the target. In this case the
 transfer orbit is larger than the target orbit. When the separation
 angle is negative and the interceptor trails the target, the transfer
 orbit is smaller.
   Has a built-in demo for low Earth orbit.
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   Form:
   deltaV = OrbMnvrPhaseChange( a0, deltaA, kTarget, mu )
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   ------
   Inputs
   ------
   a0          (1,1)  Initial semi-major axis
   deltaA      (1,1)  Initial separation (rad)
   kTarget     (1,1)  Number of revolutions (1,...)
   mu          (1,1)  Gravitational parameter (km^3/sec^2)

   -------
   Outputs
   -------
   deltaV      (1,1)  Required delta-V

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   Vallado, D. A., "Fundamentals of Astrodynamics and Applications,"
   McGraw-Hill, 1996, p. 318.
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