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I'm not talking about anything relative to the ground, the 'wind' or the model.
    "Gee Earl I don't know why my plane goes one way faster than 'ta other…"
Thanks, but I think we got that figured out.</p>

We also know 'wind' (as ground creatures perceive it) should not effect the IAS of aircraft as they circle through the sky. For the most part that's true… WE GET IT.</p>

What you need to get is there can be temporary exceptions to this rule. Two examples:</p>

<u>Hot air balloons</u> - The most common passenger observation is "it's dead calm…" "you're riding with the wind…" But, you can feel sharp short gusts if they are present. Why is that? You're supposed to be moving 'as one' with the wind? Well, it takes TIME to ACCELERATE that big-ass balloon with the INERTIA it is carrying against that gust. The gust is there and gone before the balloon can react.</p>

<u>Model airplanes (helicopter blades)</u> - They can change directions into and out-of the relative wind so fast, with such INERTIA that it takes TIME to ACCELERATE (or decelerate) the model to match the IAS it had prior to the direction change. If the RC pilot does nothing during this short period of time the model will either balloon or drop. The modeler can help this with power or pitch adjustments. The helicopter blade just changes its AOA.</p></font>