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Old 01-31-2011 | 02:50 AM
  #14  
DagTheElder
 
Joined: Dec 2008
Posts: 214
Received 2 Likes on 2 Posts
From: Sande, NORWAY
Default RE: Continuation of rational of trimming

Hi BMatthews,

I understand that all measures given may cause some confusion, i shall do my best to clarify this matter.
BMatthews
Dag, why you want to run with such a strong stability margin?
Answ:2.1 CG @ 25% MAC

Tail Volume (TVC) =0,700
Static Margin = 25,0%
Wing Aero Incidence = 0,9deg
Lift coeff at Current V =0,12
Fuselage Deck Angle = 0,66deg
Horiz Stab Incidence =0,1deg
Short Period Pitch Damping =0,89

BMatthews
You wrote in your first post that "NP on CMAC = 0.4956".
Answ: This relates to NP of Cmac at 0,4956% where C is 14,25 inch and hence SM @ 25%.

Ater test flight I expect to lower some of the incidence calculated.
All this figures are a result of re-design of Zigris except for one thing, i wanted to keep main wing as is.

Best regards