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Old 10-27-2006 | 08:44 AM
  #190  
RCUser012
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Default RE: Skymaster F-4E phantom


ORIGINAL: EASYTIGER

I've got a great idea, Adil....
If you just limit stab travel to 1/16" up and 1/16" down, you will never overstress the airplane with excessive G's.[&:]

Woj...I know there is really know way of telling, but how accurate do you think the G-sensing thing on the Eagletree is? I know you measured 50g's or something like that in some manueuvers, do you think that's real, or maybe a figure that was beyond the accuracy and sensing ability of the unit? I have no idea, I was just wondering. What does Eagletree say are the limits?

my 50 G estimate on a BobCat wing failure was not derived from the eaglet tree unit. For that one i took a VERY conservative estimate of the speed the plane was traveling at, and also a very conservative estimate of the turn radius based on a common consensus of those who saw this ... we ran the math from there ...

as for the eagletree unit, i have no reason to think it is not accurate .. on the king cat i had it up to i believe like 16 or 17 Gs in a tight turn. I think a good way to see how accurate it is ( or if its even close) would be to take video of a plane doing a nice symmetrical loop at a set speed (can be done with a speed limiter on the ECU) .. do the math on the speed / vs loop diameter and see if the reading off of the eagletree is in the ballpark ....

I would not worry about the whole G thing on the planes you fly however …. Foam makes for very light wing loadings


Voy