Quote:
Originally Posted by Steven Zehner
Believe it or not, even though was wind was powerful, it had very little effect on the moon rocks. The rocks had too many open spaces to be moved by the wind.
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Before we had the fan guard in place, we did some informal testing to see how much the propwash could deflect a moon rock. With the propeller running at full power (drawing about 55 amps for each CIM from a direct battery connection), we lightly tossed moon rocks in a gentle arc directly across the air stream. They typically landed on the floor less than six inches aft of where they would have with the propeller stopped. A camcorder watching from the proper location confirmed the slight deflection, but casual observers didn't see any effect.
With all the emptiness it contains, a moon rock has a much lower drag coefficient than its size implies.