Shaking

[Slayer]

I'll admit I haven't probably spent as much time already as some, but I can't seem to keep this thing stable no matter how smooth I am on the control inputs. At different phases of flight the helicopter is shaking quite a bit and this seems abnormal. I try to go easy on the collective because it seems to be related to this but I just can't seem to get it down ( spoiled by Blackshark no doubt).

 

Overall the FM seems good to what I know, but my RL flying experience of helicopters is limited to RC and this thing flys nearly identical to some of these (minus the shake).

[wess24m]

I'll admit I haven't probably spent as much time already as some, but I can't seem to keep this thing stable no matter how smooth I am on the control inputs. At different phases of flight the helicopter is shaking quite a bit and this seems abnormal. I try to go easy on the collective because it seems to be related to this but I just can't seem to get it down ( spoiled by Blackshark no doubt).

 

Overall the FM seems good to what I know, but my RL flying experience of helicopters is limited to RC and this thing flys nearly identical to some of these (minus the shake).

 

 

It's normal. most noticeable when entering or coming out of ETL, nothing to worry about. I've noticed it at different times as well, like at near max speed. You'll always be hand on the cyclic unless you're on autopilot, you can trim it for straight level flight but that doesn't last very long. I've started only using the autopilot when using the co-pilot sight or the door guns. If you stop using it for level flight you'll get to where you don't even notice the little constant inputs that are needed.

[YorZor]

The shaking over 100kt cruising seems excessive though... Can't see that you could fly comfortably that way.

[112th_Rossi]

I've learned to ignore the shake and concentrate on the VSI to ensure I don't sink too much.

[wess24m]

The shaking over 100kt cruising seems excessive though... Can't see that you could fly comfortably that way.

 

You have to think though that if you mounted a rigid camera in your car, you'd see every bump. Least thats how I justify it. :)

[Pikey]

I agree, it does "feel" severe enough to warrant alarm and there's multiple reasons for it which require you working out what's wrong. Is the shake IRL the same as ETL transitions and excessive speed? Also when manoeuvring slowly and getting it I panic about vortex rings and start throwing the collective which in turn leads me to yaw badly and start losing control.

[PeroperoDokkiri]

I think a little shake like what You get when starting engine should be present all the time during operations.

[112th_Rossi]

I agree, it does "feel" severe enough to warrant alarm and there's multiple reasons for it which require you working out what's wrong. Is the shake IRL the same as ETL transitions and excessive speed? Also when manoeuvring slowly and getting it I panic about vortex rings and start throwing the collective which in turn leads me to yaw badly and start losing control.

 

You can 'feel' the chopper about to transition so I always add a little collective and keep my eye on VSI so it doesn't sink too much

[159th_Viper]

Here's a post from another thread: Watch your collective - a feather touch is all that's required to keep the shakes under control:

 

http://forums.eagle.ru/showpost.php?p=1748970&postcount=10

[Mt5_Roie]

Here's a post from another thread: Watch your collective - a feather touch is all that's required to keep the shakes under control:

 

http://forums.eagle.ru/showpost.php?p=1748970&postcount=10

 

Great info!

[YorZor]

The TL shakes are quite normal and I like those. But the shakes over 100kt is crazy.

[leonpo]

I am using g-force motion seat and these shakes over 100knots are very strong

 

Leon

[Sundowner.pl]

That's because there is no shaking between ETL and the 100kts in the DCS: Huey model.

 

Look at this video, how the amplitude of vibrations smoothly rises from the ETL to 90kts:

http://www.youtube.com/watch?v=mMQvybsSR3I

[Lane]

I have just disable " Gforce head movement " in the settings. the front panel "shake"; but at least the "camera" is more stable. With this enabled, i find them extremely exagerate, without its fine. ( this said i too reduce them when "flying". )

Edited May 9, 2013 by Lane

[bursco]

I'll admit I haven't probably spent as much time already as some, but I can't seem to keep this thing stable no matter how smooth I am on the control inputs. At different phases of flight the helicopter is shaking quite a bit and this seems abnormal. I try to go easy on the collective because it seems to be related to this but I just can't seem to get it down ( spoiled by Blackshark no doubt).

 

Overall the FM seems good to what I know, but my RL flying experience of helicopters is limited to RC and this thing flys nearly identical to some of these (minus the shake).

I have tried but cannot get a reasonable hover like those in the vids. Just runs away with me and tries to turn turtle. Have tried various curve and saturation settings etc.

 

Using satek x52 pro with saitek pedals.

Have no probs with ka50 - well maybe little ones - but nothing like the Huey probs.

Using Huey sim in options - is there a trim like the ka50 for the Huey?

Will I be better reinstalling DCS World and all modules.

Any help appreciated

Denis B

[159th_Viper]

is there a trim for the Huey?

 

 

Yes but I would not bother with trim where you are now - will only get you further into trouble.

 

Any help appreciated

Denis B

 

Set your pitch and roll curves to 10, collective curve to 5 and all saturations to default (100%). Start a simple mission on ramp with engine running and attempt a vertical take-off (when I say take-off I mean just get the weight off the skids and a couple of metres off the ground). Attempt to hover and taxi around slowly.

 

Spend about a minute or so doing this, quit the mission and post your track. We can then have a look and advise from there.

[Sundowner.pl]

I have tried but cannot get a reasonable hover like those in the vids. Just runs away with me and tries to turn turtle. Have tried various curve and saturation settings etc.

Sounds like pilot induced oscillations to me. Remember to not wait for effect of the cyclic movement. Move the cyclic where you think you need it, then immediately get it back where it was, and then wait to see what happens. You pretty much pilot a helicopter with little nudges :smilewink:

[TimeKilla]

I've learned to ignore the shake and concentrate on the VSI to ensure I don't sink too much.

 

Ditto although it is a little harder to control while having the shakes.

[rabid_monkey]

The shaking over 100kt cruising seems excessive though... Can't see that you could fly comfortably that way.

 

I know that from flying a jet ranger that if you have the doors off the speed limit is 80kts. If you go above 80 kts it shakes. A lot. This is probably normal for max speed in a helicopter.

[bursco]

Yes but I would not bother with trim where you are now - will only get you further into trouble.

 

 

 

Set your pitch and roll curves to 10, collective curve to 5 and all saturations to default (100%). Start a simple mission on ramp with engine running and attempt a vertical take-off (when I say take-off I mean just get the weight off the skids and a couple of metres off the ground). Attempt to hover and taxi around slowly.

 

Spend about a minute or so doing this, quit the mission and post your track. We can then have a look and advise from there.

Here is the track - but its nothing like what you describe - it would appear that a lot is self induced and proves I'm struggling with this and may have to wait for a better joystick.

 

I did'nt have these probs when flying my RC helos they appeared to be stable - must be my age.

 

Thanks for very quick replies and help.

 

Denis B :helpsmilie:

Test.trk

Edited May 9, 2013 by bursco

[159th_Viper]

Here is the track - but its nothing like what you describe - it would appear that a lot is self induced and proves I'm struggling with this and may have to wait for a better joystick.

 

OK - It's not the joystick, the Saitek will be fine. Just watched the first couple of seconds and already some things you can try and eliminate:

 

1 - Easy on the Collective. You need to be a lot more delicate. Microscopic amounts of input - take your time - until you get weight-off-skids.

 

Now the important part:

 

When you are airborne, leave the collective alone . You are adding and taking away power, magnifying your inputs. Don't touch the collective again until you're ready to settle.

 

2 - Read no 1 again and try the mission again. Do not get disheartened as you WILL succeed. Remember, it's definitely easier with the updated flight model that is coming so if you get it now it will be a lot easier down the line.

[bursco]

Thankyou very much sir and leaving the collective alone has made it a different helo. Made an old man feel young again. Will now have to practice - thanks again.

Denis B

 

:pilotfly:

Test1.trk

[159th_Viper]

Excellent :)

 

As you say, practice will pay. Once you learn to anticipate the helo and can taxi comfortably, tilt the nose forward and gain speed. You'll probably have to increase the collective ever-so-slightly to transition out of ground-effect.

 

Have fun!

[rabid_monkey]

OK - It's not the joystick, the Saitek will be fine. Just watched the first couple of seconds and already some things you can try and eliminate:

 

1 - Easy on the Collective. You need to be a lot more delicate. Microscopic amounts of input - take your time - until you get weight-off-skids.

 

Now the important part:

 

When you are airborne, leave the collective alone . You are adding and taking away power, magnifying your inputs. Don't touch the collective again until you're ready to settle.

 

2 - Read no 1 again and try the mission again. Do not get disheartened as you WILL succeed. Remember, it's definitely easier with the updated flight model that is coming so if you get it now it will be a lot easier down the line.

 

 

How are they changing it?

[159th_Viper]

How are they changing it?

 

It's less squirrelly - more dampening.