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   Computes the rate of climb and acceleration.
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   Form:
   [rateOfClimb, accel] = RateOfClimb( d, velocity, altitude )
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   Inputs
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   d              (1,1)  See "ConcordeProperties.m"
   velocity       (1,:)  Velocity
   altitude       (1,:)  Altitude (m)

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   Outputs
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   rateOfClimb    (1,:)  Range (m/s)
   accel          (1,:)  Acceleration (m/s^2)

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