Ok - you're right I'll give a run at the FM to see what can be done to improve that behavior.
the GC_Flaps_Shift is the relevant entry, and presently it is at 0.1. I'll try to increase it and see what happen. However, the aircraft was always nose heavy, not only at landing - so the real solution is probably a mix of gc parameters and cog forward positioning, as presently, just with some slight adjustement of both.
If I remember well the only mod with COG changing due to fuel quantity was the F51D by Josse, but there the problem was the opposite - instability at take off. Do you happen to know what are the "rules" of the GC parameters? or do we need yet to experiment and discover them?
Concerning top speed limit - I must probably raise that and quite probably raise the [Toughness] entries - Italian monoplanes were sturdy, not like their biplanes. I rememember having read something about desintegrating speed limit of the Ba65 in dive - I will check my doc.
Prop rotation for the Ba65 is another full issue - as a matter of fact each version (K14 and A80) rotated in a different direction - I have now the correct original historical data for the engines and the planes (you cannot imagine the profusion of false performances data existing for this plane and its engines!!!) and the next update will probably include a revision of the EM and FM - though it will probably not bring some dramatic change, except possibly for take off behaviour.
However the whole issue of the emd for the Gnome-Rhone engine family needs to be adressed once for all in Il2 - it's quite crazy to see engines who are license version (not copies but license versions) with widely different emd parameters - it's still more interesting to see some license versions becoming "inline" engines (see the IAR series!). This is true for the 14K family and for the 9K family as well.
BTW difefrences between original, license and copies are quite interesting by themselves - In Italy license produced engines were often superior to the French original while the "improved" copies were a failure . In the Soviet Union the situation was inverted - the licensed versions were of low quality to say the least but the "improved" copies were really improvements! In Japan license were quite good and copies were real improvement under the weight constraints of Japanese planes. Hungarian license produced Gnome and Rhone were quite smooth and good.
One last thing - this plane model was built with the aim of being "nose heavy" so one need to be very careful when changing the position of this COG, as its position has an intimate relation with the behaviour of the gears hooks enabling the plane to stand correctly on the ground (without bouncing, crashing, sinking, having the tailwheel madly rotating and other Il2 typical charming fantaisies that are modders weel known nightmares to solve). As always, it's a question of improvements vs impairements balance.
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Topic: Breda Ba65 K14 & A80 ready to DL (7 versions) - updated 26/12/11 (Read 101838 times)
