by ja sam niko » Thu Mar 27, 2014 3:03 pm
I was tinkering around elevators,lift and flaps ,but without touching the CG...the results were not good also. It was good to eliminate the annoying pitch-dive behavior ...nothing else. The take off speed was normal,around 150 ,but the nose way up,nearly 10 deg. which made flying and even more -landing ,close to impossible.
I 'm aware that CG and lift numbers are badly wrong here...but without Omega's FBW ,this plane will not fly normally. The FDM of the Neo, is 99% the same as on this one,but with FBW... Wihout it,even the Neo will have the same problems.
Interestingly, the A320-200 reacted well on the changes in the CG,without touching anything else. But others didn't. A321 needs 450+ kts to take off,A319 can't take off at all and it sits on it's nose gear..... 318..didn't want to try.
The old Omega's A330 ,which is somewhere below,has almost the same FDM ,like this A320F but million times better,same cockpit,AP....so there must be a way to use that FDM here,with some corrections of course.
Also ,there is something else. In JSB ,there are three main unit positions ,X , Y , Z,right?
On the A340-600 for example is like this:
Z AXIS (Positive upwards, Negative downwards)
X AXIS (Positive in direction from Cockpit to Tail, Negative from Tail to Cockpit)
Y AXIS (Positive from Port to Starboard, Negative from Starboard to Port)
So I tried one more thing. I have reverted the CG data on the 321as it is by default ,and tried to add some weight to the tail area, to try to find a balance between nose and tail. The result was that the aircraft lost it's side to side stability.....so,Will someone here tell me,which of these three axis does what in the A320's FDM ,cause obviously it's not the same as for the A340?
Cheers