Anatoli-Kagari9

Has it been addressed already ?

Well, I agree, but believe me, the x-wind if dealed with correctly isn't really a problem with this module. I use the default landing and takeoff situs and set a x-wind of around 6m/s ( around 12 knot ), and it's still manageable...

Just a thumbs up for the way our Spitfire IX is modelled in DCS... There are certainly many details, one of them is the way it's elevator is most of the time deflected down, inflight, at almost any trim settings, which pretty much agrees with every single video of real Spitfires inflight, recorded from the cockpit, like in this one: Our DCS Spitfire perfectly agrees with this peculiarity !

I honestly can't find the Spitfire difficult to handle at all, using my cheap controller setup ( TS16000 stick only, broken HOTAS unit from an old X52, and Saitek Combat Rudder )... Well, exception made to when I bounce in a landing - bouncing in this module is almost prohibited, which doesn't appear to be the case IRL... at least judging from the videos I watch on YouTube.... :-) https://www.youtube.com/watch?v=d_3YuwerLCQ I just try to follow the mentioned techniques, obtained from several pilot reports over the Internet, and mimic it as close as possible in our virtual world of flight....

Have to give it a try then...

Well, sorry but you're actually comparing apples to oranges ... A2A, as much as it could do for MSFS, can't do miracles... It's all so flat and basic in MSFS land... sorry to say ... I loved when I firewalled my throttle in their accusim modules and my p51d kept climbing, straight ahead, no hint of yaw / roll ... nada... Watch this video and see the dancing of the floor....

Phil, I "had seen your curves" :-) but I feared such big saturation values could affect combat turning performance, at lower altitudes / Gs... But I did apply a saturation of 80% to both the pitch and yaw axis...

Further to my last post, the "feet dancing" on takeoff and landing, is very noticeable in this video: It's pretty much what I find myself doing in the DCS IX model :-)

And, tweaking the pitch, roll and yaw controller curves I use with my TS16000 and Saitek Combat Rudder Pro made a whole lot of a difference... The DCS Spitfire IX handles in such an harmonious way, that I have almost forgotten that rudder forces aren't yet being modelled - but they'll arrive with one of the upcoming updates for sure as Yo-Yo mentioned already. Regarding the landing bounce, I agree the Spitfire still bounces probably a bit too much for my liking...

@sdflyer, in this context only static stability makes sense.

Pretty much my controllers too, although I use the HOTAS unit of an old, broken X52 Pro...

Yo-Yo, you wrote "In a stable aircraft... by the way, Spitfire V, for example, was neutral". Does this differ from the DCS Mark IX model ? In this document I also read that the early VA Spitfire models also showed stick-fixed instability in flap-down condition with power on or off flight conditions at slower speeds. Does this also "affect" the IX models portrayed in DCS World ?

Indeed! A BIG THANK YOU to all of those who contributed in this thread so far. Prpperly settings the "curves" in your controller axis is paramount for an even better, Greater, experience with DCS World modules like the ww2, and the helis :thumbup:

Maybe interesting to read: http://jsbsim.sourceforge.net/spit_flying.pdf Reinforces Yo-Yo's remarks above, and some aspects of how the Spitfire is modelled in DCS, although the model Mark IX has symmetrical radiators under the wings, near the root, and the tests described in the text linked above refer to the assymetric radiator models, with a radiator on the starboard wing, thus naturally compensating for some of the prop effects, by increasing parasite drag on that wing, and also lowering it's efficiency, which can justify less use of rudder and aileron to overcome the various "torque" effects...

But I still find the DCS Spitfire too sensible on landings, if you bounce even just a bit... If you do not touch at the absolute perfect speed ( GS ) you're done - at least I am... Too sensible imh...

Although I don't think there would be huge rolling moments at cruise / combat power & speeds... I guess that due to it's wing design the Spitfire wouldn't present much of a problem with roll stability, even with bugger power variations... It should be very stable in that respect above Vs0, I guess... Additionally the Spitfire in DCS hasn't yet got the final tuning regarding yaw forces with dynamic pressure, so you can feel the overdone wobble even with minor rudder trim tab adjustments...

You mean dead stick approaches ? They can be done - not that difficult. Biggest problem is that right after landing, without the aid of some propwash, you'll have propblems keeping the aircraft in the rw... It's just like landing in a glider in a windy day, on a narrow airstrip...

What's it really about ? I have tried it since I installed v2.1 to use Normandy, and even in my old i5 2500 + GTX 960 Ti, I can get playable frame rates but either "Deferred Shading" or "Cockpit Global Illumination" when turned ON, and even more if HDR is ON also, have quite an impact on the fluidity of the simulation, specially in missions / online servers with many objects. Apart from the glowing cockpits, which forced me to use Gama 1.4, what are these two settings really about ? - Deferred Shading - Cockpit Global Illumination Thx for any insight :thumbup:

Thx, and yes I was aware that it is a Flattner type tab, but those only work as force reduction mechanisms for when the controls have to be moved at higher dynamic pressure values - they do not directly move the main control, and act in that way just as any other trim tab. The effect I was seeing, before this last patch, was that by only moving the rudder trim tab, even with the aircraft on ground and engine off, the rudder also moved. It Works ok now.

Art-J, thx for the feedback ! I will check it then, as soon as I get today's patch in my DCS PC, which will probably happen only tomorrow night :-/

I'm not 100% sure how it works, but I don't believe that's the case since there's a tab in the rudder. Maybe the Devs can confirm ( ? )

In the Spitfire, using v2.1.1, when CTRL-ENTER is used to track the control surface deflection, we can notice that as rudder trim is set, even with the aircraft stopped on ground, and the engine stopped as well, the rudder moves. In modules like the p51d, surface deflection only used to happen when there was enough airflow over the trim tabs.

Probably not your footwork, but rather the absence of force modelling in the present version of the Spitfire...

Well guys, THANK YOU ALL for the great suggestions. I will certainly give them all a good try as I arrive home and next to my beloved DCS Sim :-) which will happen only in not less than 8 hrs :-( All of the Best, :thumbup:

Well, I pushed my UH-1H into DCS 2.1.1 + Normandy, and tried to edit a mission and replace the default aircraft for the UH-1H, but the heli doesn't even appear in the dropdown menu ? Trying to add it as an object also fails ? Any suggestions ? Thx!