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Old 25th October 2004 | 23:54
  #387 (permalink)  
Lu Zuckerman

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Joined: Sep 2000
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From: The home of Dudley Dooright-Where the lead dog is the only one that gets a change of scenery.
Thumbs up You can't get here from there.

Here is another point. Let's say the basic pitch setting on the R-44 measured at the root is 10-degrees (example only). The pilot pulls collective to a hover adding an additional 8-degrees (example only). In order for the helicopter to hover the blades will cone up until the lift is countered by the centrifugal force establishing the cone angle. The pitch coupling adds in an additional 3-degrees, which is added to the collective input giving a total input of 11-degrees (example only). The additional 3-degrees might or might not cause the helicopter to rise. As I stated previously this in itself is not a bad thing.

Now, let’s enter into an auto rotation. The pilot puts the collective full down but because the blades are still coned he can not return the pitch setting to 8-degrees measured at the root. The actual angle is 11-degrees and this may effect autorotation.

Possibly.

On another forum an R-44 pilot stated that you had to fight the helicopter to the ground. Assuming this is a correct statement could it be due to the pitch coupling on the rotor head during coning?

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