Bomber wrote in Fri Jan 29, 2016 11:43 pm:Well you could pm me your email address and I'll zip up my working folder and send it you...
If that fails..... I'd guess forward vs backward slashes.
(process:4496): GLib-CRITICAL**:g_slice_set_config:assertion 'sys_page_size==0'failed
Bomber wrote in Sat Jan 30, 2016 12:33 pm:A quick real life ask13 flying question.. (RL)
at 45kts flying level with no trim.... to clarify is the stick approx 30% forward away or towards you from neutral ?
Er.. you have an even newer one (FDM) ?Bomber wrote in Sat Jan 30, 2016 1:16 pm:Don't try and fix that fdm as the new one looks nothing like it.
Firstly - I have temporary problem in relating the flight manual reference to those you sent.Bomber wrote in Fri Feb 05, 2016 8:17 pm:...
... On page 12 of the flight manual pdf I include in the docs you can see the H-stab has an incidence of -2 degs....
Now this will generate some positive moment, ie the nose will rise... however in previous posts you're saying to level fly you pull the stick back 25%... even more nose up moment.
What I'm struggling to find is the nose down moment from the wings....with the CoG being 6 inchs behind the datum I'm struggling to get enough if any positive static margin. To my mind the only way to achieve this would be to calculate the wing moments as if the Centre of Pressure is from 40% cord and not 25% cord..... maybe this is correct ?
Any ideas ?
Simon
Darktrax wrote in Sat Feb 06, 2016 2:28 am:Bomber wrote in Fri Feb 05, 2016 8:17 pm:...
On that drawing, left side view, is a "Flosse Stabilizer" dimension showing a physical -2° angle setting. I am guessing that is the value you mean.
[b]
OK - allowing that my aeronautical knowledge is somewhat behind yours..Bomber wrote in Sat Feb 06, 2016 11:44 am:The problem I'm having with the CoG is that we know exactly where it is.. on page 6/18 of the pdf ..left hand side it tells us the empty weight CoG positions max and min at various weights... all aft of the datum and roughly above the centre wheel...
on the right hand side we see the known CoG flight positions that have been tested... 2.76 inches to 9.7 inches aft of datum...
so I'm left with a small -ve static margin that wants to push the nose up.... yet this is opposite to what you describe. (I believe what you're saying)...
I can't change the physical positions of the plane, so I'm looking to see what I can change.
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