[CLOSED] K-4 module completely stops rolling at high speeds - ED Forums
 


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Old 09-30-2016, 12:16 PM   #1
Kurfürst
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Default [CLOSED] K-4 module completely stops rolling at high speeds

Making a bug report of this.

I put the new version K-4 moduel through some brief trials today, personally I like the new "clipping" controls a lot more, even with the non-FFB joystick, it feels far more natural.

But there is one serious issue though, which is that during dive trials as ca 2-3 km altitude and at around 700 km/h indicated the ailerons suddenly stop working. Completely. Pitch is still controllable. I believe this may be down to odd clipping of the aileron control forces.

There is definietely something wrong with this, since its not that the roll rate would get reduced roll rate (with the increased stick forces), but the rolling ability is completely gone. The aircraft does not react to rolling inputs at all, not even slowl. It rolls to the right somewhat though, but I believe its entirely down to propeller torque.

The issue is that even if the pressure on the control surfaces is very great at low speeds and seriously limit deflection, you should still get some effect. This is shown on actual trials of Bf 109F-2 by DVL in 1944.

The guy behind the stick in a 109F-2 was still measuring about 0.6 radians (cc 34 degrees per sec) at 780 km/h TAS, there is no reason why our pilot couldn't do that. Perhaps the new "clipping stick" model prevents us from rolling. See attached graph.

The phenomenon I encountered in the DCS module appears at about 700 IAS. Now, 700 kph IAS, which at around 1500 meters would still work out as around only as cc. 770 TAS, so according to the graph, you should be still able to get a modest roll rate with the plane.

Thing is, the aileron reversal and "0 degrees of roll" point is far, far higher than that, even on this tested F-2 (and as an educated guess, even higher on the K, since wings were reinforced already on the G), at around 1000 km/h TAS.


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Old 09-30-2016, 05:19 PM   #2
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Thank you for the report. We'll check it.
First glance on the problem gives me idea that something wrong with forces that in-game pilot could put on a stick. The forces are different for longitudinal and transverse moves because of human constitution and that corresponds with controllable pitch on that speed.
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Old 09-30-2016, 09:42 PM   #3
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Thank you Racoon. That was my impression too - as if the pilot's 'sideways hand force' would cease too early.
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Old 10-22-2016, 03:57 AM   #4
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Any update on this..?
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Old 10-22-2016, 04:51 AM   #5
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I think Yo-Yo is out of town right now, I will bug him about it when he gets back, I am seeing the same thing.
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Old 10-23-2016, 07:55 AM   #6
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Thank you Sith!
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Old 10-31-2016, 05:07 PM   #7
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He's back, this is a known bug, and will be fixed in the future. Feel free to check on the next release and going forward. Thanks!
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Old 11-03-2016, 12:32 PM   #8
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Nice to hear that Sith, thanks for the feedback!
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Old 12-11-2016, 02:57 AM   #9
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Default Is this normal for the K-4?

Hi gents,

is this the normal behavior for the K-4 in a dive?
What ever settings i use, diving with power, without power, rads closed, rads open or on automatic, 100% fuel or 20% fuel. When i hit 750 Km/H in a dive, she starts to roll right, even when i use full left rudder and full left aileron. No change to stop the rolling. So where is the sence in makeing it possible to dive with up to 850 Km/H, when i have from 750 Km/H no controll of the right rolling, but no problem with the elevator, there i have full controll and can bring the K-4 easy out of the dive without using trim.

Also she becomes between 250Km/H and 350 Km/H very wobbeling not nice, where the 190 flys like on rails at this speed, should not the 109 be better at low speed handling?

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Old 12-11-2016, 07:17 AM   #10
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There is German Document where High Speed Tests are described.
Here small Passage:
At 750Km/h the Plane start rolling to the Right with counter force on the Aileron the Plane suddenly goes to the left was not possible to hold the Plane in Line anymore.
And the 750km/h are IAS Airspeed True Airspeed is around 850 Km/h.
That's very high Mustang was one of the best Dive Planes in WW2.
And the 109 behaves in low Speed far better but have to be very hard to work with your Rudder inputs and fly smooth also big influence by the PC Hardware you use.
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Last edited by MAD-MM; 12-11-2016 at 07:20 AM.
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