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CG Excursion

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Posted

Hi All,

my name is Marco Mille and I'm writing from Italy.

I have bought 6 month ago an Avid of second hand. I'm interessed to know what are the excursion limit of C.G. of AvidFlyer or  if is possible have a construction manual. I have operation manual only.

thanks

Marco

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Posted

Is it a speed wing, stol or Heavy Hauler?

I have the manual in PDF and will burn a copy and send it out to you today.  you can email me your address at akflyer_2000@yahoo.com.

The CG range is 11.185" to 16.5" from the leading edge of the wing.  I have been told that the plane has been flown as far back as 19" with no ill effects, but you are a test pilot if you fly outside the 11-16.5" range

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Posted

thanks, but another person have send me a manual already.

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Posted

Hi , I´m looking for the construction manual too ,I would be very gratefull...

Thank you very much.

Kind Regards

David Santiago Garcia

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Posted

Mine is at 18" and flys great with 532 

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Posted

I wonder if that 16.5" aft cg limit isn't set by requirements for the tri- gear version, not pitch stability?

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Posted (edited)

One question I have regarding C of G position is : How to determine / what incidence does the extended leading edge have on C of G position. The original C of G is measured on the spar leading edge....an extended leading edge is going to change that measurement ( also, does it  change the C of L) ? As I see this the aircraft C of G stays where it is for a specific loading (extended LE same as no extension) but the measurement is going to be wrong.......so the pilot could be outside the envelope thinking he is inside !!!!!!!!

Let me know your thoughts..I am a bit unsure about this one. It came up because I compared empty aircraft C of G with another Catalina who has extended LE. and all the measurements are quite off compared to mine.......

P.s Same problem when you do your initial aircraft weighing to find your C of G position

Edited by flywise

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Posted (edited)

C of L has everything to do with C of G - but for instance, the Leading Edge extension of, say 4", does not change C of L that much when you divide the length of chord into equation - maybe 1/2 that much, or maybe it does move it forward that much?  I had this all figured at one time for nosedragger front engine, but Chemo has clouded brain right now - I also added about 6" more to flaps (from 9" flaperons to 15" flaps/ailerons) (Ailerons alone have to be about 10% of wing to work well) to do my figures - Maybe take two readings - one from original leading edge and one from new half of extension and compare them?  Sorry I cant help much now.  Where are the real Aero Engineers?  EDMO

Edited by EDMO

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