PitchMotorSizing:

```--------------------------------------------------------------------------
Determine size of pitch motor based on driving acceleration
requirements. The pitching moment aerodynamic effect is not
explicitly considered.

We assume a sinusoidal function for the desired pitching function.

If DeltPitch = -Delta*sin(omega*t) is the desired pitching profile as a
function of time,

d/dt (DeltPitch) = -Delta*omega*cos(omega*t), and

d^2/dt^2 (DeltPitch) = Delta*Omega^2*sin(omega*t).
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Form:
[maxSpd, maxAngAcc] = PitchMotorSizing( omega, delta, fac )
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------
Inputs
------
omega       (1,1)  Maximum rotor speed (rad)
delta       (1,1)  Magnitude of sinusoidal pitching (rad)
fac         (1,1)  Design limit factor

-------
Outputs
-------
maxSpd      (1,1)  Maximum speed
maxAngAcc   (1,1)  Maximum angular acceleration

--------------------------------------------------------------------------
```