Autopilot Damper on/off? - Page 3 - ED Forums
 


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Old 10-12-2018, 11:51 PM   #21
Aluminum Donkey
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Originally Posted by Top Jockey View Post
Ok, indeed I did get the impression that it were two different functions, but didn't understood the exact nature of each one.

About the "stick deflection limiter", Lixma 06 already explained.

Regarding the "pitch damper", I didn't know what it did exactly.
Yes the red caution light appears, and the audio warning tone does also.

So we can say that the disabling the "pitch damper", allows an higher instantaneous turn rate ?


Part of the doubt is because these two functions are in some ways similar, they both allow to "push" the limits of normal flight - something that in an F-16 for instance is somewhat restrained.

Disabling the pitch damper doesn't allow you to turn tighter. What the damper does is reduce the pitch 'wobbling' (oscillating) by damping it out using the control surfaces. So, the plane flies more smoothly when making pitch inputs.
Like the Flanker, it's on by default. The MiG is capable of a very high rate of pitch change, and it oscillates a lot without it, so it's normally left on all the time when the plane is being flown. That's why you hear the warning when it's off.

The only reason to disable it is if there's a problem with the autopilot. But if you want, you can fly without it--L_Alt+9 for 3 seconds. The 29 is really 'hairy' in pitch without it



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Old 10-14-2018, 06:07 PM   #22
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Is the pitch "kicker" the cause of the nose bouncing around a turn? E.g. if I hold the stick hard back I get a very fast instantaneous turn, followed by a pause, then hard turn resumes, repeat.


Also, are either of these functions restricting pitching down? It seems once you go above ~1,000 km/h IAS you can hold the stick all the way forward and the plane barely reacts, you can just about get it into a slow dive after holding the stick forward for a dozen seconds. I assume this is a feature but I want to understand better what's going on.
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Old 10-14-2018, 06:20 PM   #23
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...

Also, are either of these functions restricting pitching down? It seems once you go above ~1,000 km/h IAS you can hold the stick all the way forward and the plane barely reacts, you can just about get it into a slow dive after holding the stick forward for a dozen seconds. I assume this is a feature but I want to understand better what's going on.
From Yo-Yo. It's about the 5th or 6th sentence down... https://forums.eagle.ru/showpost.php...3&postcount=22
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Old 10-14-2018, 07:48 PM   #24
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From Yo-Yo. It's about the 5th or 6th sentence down... https://forums.eagle.ru/showpost.php...3&postcount=22
I'm no expert, but I don't see a direct explanation on why the plane gives only a few degrees of negative pitch deflection on the horizontal stabilators.

There's this line: IAS and altitude dependant gear ratio from the stick to stabilator;, but I've experienced the same limits at different speed and altitudes.
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Old 10-15-2018, 07:52 AM   #25
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Originally Posted by Ironhand View Post
From Yo-Yo. It's about the 5th or 6th sentence down... https://forums.eagle.ru/showpost.php...3&postcount=22
This is fine, but I release the stick and the nose doesn't pitch up. I know there's another post much more recently in that thread about trim taking up the available travel of the stabiliser, but as far as I'm aware I wasn't trimmed or on autopilot.

Edit: looks like yo-yo was talking about low altitude, I wasn't low.

Edit 2: re-read and got the explanation on page 15 of the main FM thread.

Last edited by VC; 10-15-2018 at 11:55 AM.
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Old 10-16-2018, 01:17 PM   #26
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Care to share or link here, too?
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Old 10-16-2018, 10:07 PM   #27
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May I ask by the damper off do you guys mean LAlt-9: Autopilot disconnect? Because I pressed that (and hold for more than 3s), nothing happens to me (I'm using Mig29A I guess that doesn't matter?), no warning and no unstable airplane. Did I miss something here? Thanks!
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Old 10-16-2018, 10:51 PM   #28
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Originally Posted by vadupleix View Post
May I ask by the damper off do you guys mean LAlt-9: Autopilot disconnect? Because I pressed that (and hold for more than 3s), nothing happens to me (I'm using Mig29A I guess that doesn't matter?), no warning and no unstable airplane. Did I miss something here? Thanks!
Are you sure you are awaiting 3 seconds at the least?

What is your current DCS World version?
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Old 10-16-2018, 11:32 PM   #29
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Are you sure you are awaiting 3 seconds at the least?

What is your current DCS World version?
Yes I'm holding it for quite some time in fact. I'm running the latest open beta and also updated today
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