Su-27 still pitching up even after trimming nose all the way down - ED Forums
 


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Old 07-15-2017, 12:45 AM   #1
Pronin
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Default Su-27 still pitching up even after trimming nose all the way down

So I've noticed lately that the SU-27 will still climb even after trimming all the way down. I'll have trimmed the stick as far forward as I can and the nose still pitches up
It happens at faster speeds, around 800km/h+ and more specifically when under 2000-3000 meters.

Once you get to higher altitude I don't have this issue, only when flying low and slow. Anyone else have this issue? Am I doing something wrong?

Edit: I just tested it to make sure. At 1000km/h indicated, at 1500meters, I'm pitching up even with full nose down trim.
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Old 07-15-2017, 01:12 AM   #2
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I think thats normal in high speed. Try reducing speed would help. Or get yourself force feedback joystick which have trim button and say good bye to trimming

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Old 07-15-2017, 01:18 AM   #3
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Originally Posted by Oceandar View Post
I think thats normal in high speed. Try reducing speed would help. Or get yourself force feedback joystick which have trim button and say good bye to trimming

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Old 07-16-2017, 12:07 AM   #4
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Originally Posted by Pronin View Post
So I've noticed lately that the SU-27 will still climb even after trimming all the way down. I'll have trimmed the stick as far forward as I can and the nose still pitches up
It happens at faster speeds, around 800km/h+ and more specifically when under 2000-3000 meters.

Once you get to higher altitude I don't have this issue, only when flying low and slow. Anyone else have this issue? Am I doing something wrong?

Edit: I just tested it to make sure. At 1000km/h indicated, at 1500meters, I'm pitching up even with full nose down trim.
It is possible to run in to the limit of the trim system, but the only times I've experienced it have been at higher speeds than 800 Km/h. Normally you have to be in burner at under 1,000m. Not sure why you're getting it at that speed. Try resetting the trim (hold down ctrl-T for several seconds) and see if it still happens.
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Old 07-16-2017, 03:40 AM   #5
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Originally Posted by Pronin View Post
Anyone else have this issue? Am I doing something wrong?
Nope, never had that issue. Have you checked if perhaps any of your other buttons maps to that trimmer unbeknownst to you and affects it somehow?
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Old 07-17-2017, 11:23 AM   #6
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Originally Posted by Pronin View Post
So I've noticed lately that the SU-27 will still climb even after trimming all the way down...

Edit: I just tested it to make sure. At 1000km/h indicated, at 1500meters, I'm pitching up even with full nose down trim.
I don't think that's new. Just something I've never given a 2nd thought, since I'm normally not operating at those speeds at those lower altitudes. I run out of trim at about 950-960 IAS @ 1500. From that point on, though, it doesn't take much stick pressure to maintain level flight.
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Old 07-18-2017, 06:02 AM   #7
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Originally Posted by Ironhand View Post
I don't think that's new. Just something I've never given a 2nd thought, since I'm normally not operating at those speeds at those lower altitudes. I run out of trim at about 950-960 IAS @ 1500. From that point on, though, it doesn't take much stick pressure to maintain level flight.

The problem is that even at 3000 meters and around 1000km/h which is what I usually cruise around at, its still pitching up. Its just annoying to have to keep the stick forward at all times or use the autopilots autolevel.

I don't remember ever having to do this before.
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Old 07-18-2017, 09:18 PM   #8
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Originally Posted by Pronin View Post
The problem is that even at 3000 meters and around 1000km/h which is what I usually cruise around at, its still pitching up. Its just annoying to have to keep the stick forward at all times or use the autopilots autolevel.

I don't remember ever having to do this before.
Guess it's never bothered me that much, since all it requires is a light touch on the stick to hold level. Even letting it go momentarily doesn't result in much altitude change on my end.

I've noticed it for a long time. So it's definitely been around. Perhaps from the start. Like I said, it's just never bothered me. If I'm that low, I'm paying attention. If I'm cruising along at 12,000 meters watching the ground go by, it's a non-issue and I'm free to get a cup of coffee before anything starts to go awry.
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Old 07-18-2017, 11:01 PM   #9
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Just to be clear, are we all testing this on 1.5.7 or 2.1.x?
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Old 07-18-2017, 11:44 PM   #10
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Just to be clear, are we all testing this on 1.5.7 or 2.1.x?
1.5.7. I barely ever fire up 2.x
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