OrbMnvrLowerApogee:

Path: Orbit/OrbitManeuver

% Computes the delta-V to lower apogee.
 Generates the time to the maneuver which is done at perigee.
 It is assumed that the maneuver is an impulse.

 Type OrbMnvrLowerApogee for a circularization demo.

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   Form:
   [deltaV, tToM] = OrbMnvrLowerApogee( el0, rAF, mu )
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   Inputs
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   elI         (1,6)  Initial elements [a i W w e M]
   rAF         (1,1)  Final apogee
   mu          (1,1)  Gravitational parameter (Earth is the default)

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   Outputs
   -------
   deltaV      (1,1)  Delta-V 
   tOM         (1,1)  Time of maneuver

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