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Old 07-07-2009, 08:37 PM   #25 (permalink)
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Originally Posted by joediamond View Post
A real heli can auto vertically but the rate of descent would be extremely high. Most height/velocity graphs allow for a stationary hover above 400 AGL. From that height you have enough altitude to build up enough forward speed for a normal auto. From a low hover there is enough stored energy in the rotor to cushion the landing. A medium altitude hover is bad, not enough altitude to build forward speed and not enough energy in the rotor to get the machine down.
+1. For the model world these height/speed charts don't make sense due to the power, weight, and energy components. Reading full scale procedures don't make sense with our power to weight ratios. But it is really interesting.
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