reported Autopilot oscillation

[Lixma 06]

Using 'Transition to Level Flight' (RALT-7) the autopilot gets the shakes. It starts at around 550kph and gets worse the faster you go.

 

[Marduk879]

Same here. Almost sure this isnt how the altitude hold(default "H") should behave.

[AeriaGloria]

It is, just like the Sukhois, the auto pilot is only designed for a certain speed range. It’s gain isn’t meant to handle all speeds, just like a quadcopter oscillates with too strong of motors

[Marduk879]

Flanker doesnt suffer from any of these problems you describe. Altitude hold works just fine. On high speeds it just takes time to stabilize sometimes.

[Aluminum Donkey]

Yep, same here.

AD

[Auditor]

Try turning off autopilot damper beforehand. But be SURE to turn it back on before you land, otherwise the plane will yell at you.

[pepin1234]

Don’t confuse autopilot with recovery emergency. Just before you hit H, try to get the vertical speed close to zero and the same with roll the most horizontal possible. Also both parameters should be stable at the moment of hit H (not increasing or decreasing) So will rock

Edited October 11, 2018 by pepin1234

[Burning Bridges]

How do I switch off the Autopilot? I press H and an unable to get control back. there is a light on the right side that shows TRIMMER RP (in cyrillic)

[VC]

How do I switch off the Autopilot? I press H and an unable to get control back. there is a light on the right side that shows TRIMMER RP (in cyrillic)

 

 

The autopilot works by adjusting the trim. When you cancel the autopilot, you're "in control", just the plane is trimmed weird depending on what you were doing e.g. if you cancel autopilot in a turn. If you want it back 100%, you also have to reset the trim.

[Burning Bridges]

Thanks. But I still think I am doing something wrong. Lets say I hit H and then what to return to pilot control? "A" , "LShift A" or what?

[VC]

I don't remember the default key bindings because I don't use the keyboard. But you need to press "Reset Autopilot" followed by "Reset Trim". At least that's what I do.

[Burning Bridges]

ok that is LShift-A plus whatever I used for reset trim (I have it on Ctrl + some joystick button). Will try asap, thanks!

 

 

P.S. there are some lights on the bottom left of the cockpit that light up when autopilot is on

[VC]

Each one is a different autopilot function, but I don't know off the top of my head which is which. One that's on all the time is the pitch damper, you can turn this off as well but it requires holding "reset autopilot" for 3 seconds. One I think is just a generic "AP is on", then additional lights for what type e.g. roll hold, altitude hold etc.

[MAD-MM]

I fly the MIG with MS Sidewinder, but also it goes absoute crazy when i try Altitude Holde..

 

 

Anyone Experience with the Sidewinder?

[AeriaGloria]

I fly sidewinder. Alt hold can be tricky, I recommend finding a sweet spot I need speed where the gains work without causing oscillations. Easy to do even without AP since sidewinders can’t use curves or dead zones. In addition to bring in the right speed range I get best results when activating alt hold when I move already level and holding alt. Hope this helps. I really don’t want to have to save up for a brunner stick:’(

[enigma6584]

I've just gotten the Mig-29 module myself the last week and have been reading up, testing how the autopilot works, still confused a bit. Been reading through this thread and was wondering if anyone knows of a video or tutorial on how to use this aircraft feature?

[Ramsay]

I've just gotten the Mig-29 module ... and was wondering if anyone knows of a video or tutorial on how to use this aircraft feature?

Cap did a short autopilot tutorial for Su-27, Su-33, Mig-29 & Su-25 recently.

 

 

Note: IIRC, when I flew the Su-25T regularly - I used Altitude, Attitude, Autopilot OFF and Trim reset keybinds but kept away from the other modes.

 

Edit:

 

I found DevRim's English Cockpit particularly useful for checking which autopilot mod I was in when starting out, so you may want to try that.

 

 

DevRim's DCS MiG-29 Complete English Cockpit Mod

 

https://www.digitalcombatsimulator.com/en/files/2081947/

Edited January 12, 2019 by Ramsay

[enigma6584]

Cap did a short autopilot tutorial for Su-27, Su-33, Mig-29 & Su-25 recently.

 

 

Note: IIRC, when I flew the Su-25T regularly - I used Altitude, Attitude, Autopilot OFF and Trim reset keybinds but kept away from the other modes.

 

Edit:

 

I found DevRim's English Cockpit particularly useful for checking which autopilot mod I was in when starting out, so you may want to try that.

 

 

DevRim's DCS MiG-29 Complete English Cockpit Mod

 

https://www.digitalcombatsimulator.com/en/files/2081947/

 

Thank you.

[Kazansky222]

So if I'm just in straight and level flight, and set the autopilot to altitude hold, the plane holds altitude, but it just shimmies on the ailerons ever so slightly, back and forth, same thing when I use attitude hold.

[Oceandar]

That happens if your speed is too fast around 1k kmh. Try lowering your speed around 600 - 800 kmh if my memory serves me well CMIW.

[Lixma 06]

Nah, it's definitely wonky.

 

 

https://forums.eagle.ru/showthread.php?t=222109

[Oceandar]

Just tried it on instant mission dogfight vs F-16 PG map. It was fine no wonky whatsoever at 800 kph.

[Skuva]

As of 2.8.4.39313, this is still a problem. It happens with all variants at all speed on all Autopilot modes. Can be instantly reproduced.

 

Edited April 25, 2023 by Skuva

[Ironhand]

23 hours ago, Skuva said:

As of 2.8.4.39313, this is still a problem. It happens with all variants at all speed on all Autopilot modes. Can be instantly reproduced.

 

 

What exactly is still a problem that can be easily reproduced? Do you mean the aileron flutter? Because the AP modes themselves work fine for me. Attitude Hold and Baro Altimeter Hold are steady and Ground Collision Avoidance and Level Up to Horizon work, too. Path Following and Reapproach were never implemented.

[Skuva]

1 hour ago, Ironhand said:

What exactly is still a problem that can be easily reproduced? Do you mean the aileron flutter? Because the AP modes themselves work fine for me. Attitude Hold and Baro Altimeter Hold are steady and Ground Collision Avoidance and Level Up to Horizon work, too. Path Following and Reapproach were never implemented.

Yes, the aileron wiggle waggle. All it takes to reproduce it is spawn on the mig and press H. Not only it makes unbearable to use at speeds above 650kmh, it also mess up your trim, requiring you to always reset it and adjust againg after disengaging the AP.

Edited April 26, 2023 by Skuva