Problem taking off

[jfri]

When doing the third tutorial lesson on taking of I am supposed to throttle up and wait until 270 km/h after which I should pull back the stick.

What happens is that the plane lifts from the runway before that and then it's very difficult to control. It seem it pitch up to much and if I try to correct that with trim nose down it can easily end up pitching down to much. Also roll is prone to go on one side and is very difficult to correct.

According to the lesson instructions I should not need to change any trim settings so what is wrong here ?

[Goblin]

Check that you don’t have any other USB controllers assigned to pitch, roll and yaw, other than the controllers you wish to use :)

DCS will assign these controls to all USB controllers, and they have to be deleted from the assignment.

[Jenrick]

I use a little forward pressure on the stick to keep the nose down until I hit 270 km/h. Then I relax it and the Viggen flies itself off the runway. I had the same issue you're talking about till I changed it up a little.

 

-Jenrick

[bbrz]

I should not need to change any trim settings so what is wrong here ?

You definitely need to change the trim setting before take off. It used to be 0° which was too little. In one of the latest the patches they increased it to +7 which is way too much.

AFAIK Heartblur is going to reduce the trim setting to +3 for the next patch.

 

@Jenrick, using forward pressure on the stick and just releasing the pressure to let the Viggen fly off on itself isn't the way you should do it.

Always set the trim so that you actively need to pull her off the runway.

[Sharkh]

You definitely need to change the trim setting before take off. It used to be 0° which was too little. In one of the latest the patches they increased it to +7 which is way too much.

AFAIK Heartblur is going to reduce the trim setting to +3 for the next patch.

 

@Jenrick, using forward pressure on the stick and just releasing the pressure to let the Viggen fly off on itself isn't the way you should do it.

Always set the trim so that you actively need to pull her off the runway.

 

Its interesting because the schoolgirl(lol) instructor in the takeoff training already says it has to be set to 3 nose up.

Edited July 10, 2018 by Sharkh

[TOViper]

Its interesting because the schoolgirl(lol) instructor in the takeoff training already says it has to be set to 3 nose up.

 

 

it is really a funny voice ... and I think "she" would never be taken serious by anyone ... am I wrong? :music_whistling:

Maybe its possible for HB to record voice-overs from real pilots? Swedish pilots? Just mentioning this ... :)

[imacken]

it is really a funny voice ... and I think "she" would never be taken serious by anyone ... am I wrong? :music_whistling:

Maybe its possible for HB to record voice-overs from real pilots? Swedish pilots? Just mentioning this ... :)

 

Sounds OK to me. I like it.

[MustanGrande]

The most jarring thing was that she transitioned to male after the first few tutorials. xD

 

That said, I've had a similar problem on takeoffs. Namely, when I give slight back pressure to rotate, the Viggen LEAPS into the air and starts yelling at me for exceeding AOA. Correcting downward is almost always an over-correction that leads to touching back down again.

 

I'll have to give the "hold the nose down and then relax pressure" technique a try.

[bbrz]

Namely, when I give slight back pressure to rotate, the Viggen LEAPS into the air and starts yelling at me for exceeding AOA. Correcting downward is almost always an over-correction that leads to touching back down again.

 

I'll have to give the "hold the nose down and then relax pressure" technique a try.

If you do have to apply back pressure to get the rotation going, the 'hold the nose down and relax pressure method' doesn't make sense.

 

I usually pull the stick slightly back well below the expected rotation speed and as soon as the nose starts to come up I immediately neutralize the stick again.

[FanOfALF]

When doing the third tutorial lesson on taking of I am supposed to throttle up and wait until 270 km/h after which I should pull back the stick.

What happens is that the plane lifts from the runway before that and then it's very difficult to control. It seem it pitch up to much and if I try to correct that with trim nose down it can easily end up pitching down to much. Also roll is prone to go on one side and is very difficult to correct.

According to the lesson instructions I should not need to change any trim settings so what is wrong here ?

 

When using x-tank you should have the trim set to 3 degree nose up. But in your case, that shouldn't be the problem as the plane wants to pitch up by itself. Maybe too much trim up is set? Or, as some other suggest, something wrong witch your control setup.

 

When not using x-tank, it should be good with neutral setting. But I guess in the lesson you're carrying x-tank.

 

I haven't hade your type of issue. You shouldn't need to push nose down on take off, that's not the procedure. Had som problem to get the Viggen to take off when I had full loadout with bombs. But I guess the trim was the problem and maybe combined with an early bug. Now I never have that problem as long as I remember the trim set. :)

[thrustvector]

trim does need to be set for extra weight in bomb loads etc. I thought it was set to 3 deg for standard takeoff, just check on the dial, but I never have a problem with it, maybe as I have a heavy load all the time, when she willing to lift off shes ready for flight

[MustanGrande]

I might need to add some extra curve to my pitch axis, I think. Most of the time, the Viggen is pretty docile, but it seems exceptionally touchy on takeoff.

[imacken]

I’m quite mystified by this thread really. Personally, I have no curves set on my HOTAS Warthog, trim set to 3 up, and with just a slight pull back at around 270kph, the Viggen lifts off very smoothly with no real stick movement required after that.

Like others have said, for anyone having a problem, it must be a trim or controller issue.

[jfri]

When using x-tank you should have the trim set to 3 degree nose up. But in your case, that shouldn't be the problem as the plane wants to pitch up by itself. Maybe too much trim up is set? Or, as some other suggest, something wrong witch your control setup.

 

When not using x-tank, it should be good with neutral setting. But I guess in the lesson you're carrying x-tank.

 

I haven't hade your type of issue. You shouldn't need to push nose down on take off, that's not the procedure. Had som problem to get the Viggen to take off when I had full loadout with bombs. But I guess the trim was the problem and maybe combined with an early bug. Now I never have that problem as long as I remember the trim set. :)

 

 

Setting pitch trim to neutral worked fine for the pitch problem.

But I still have a problem with the plane rolling to the left. It's a strong tendency and not only during take off. I have opened the control display with right CTRL RETURN and my controls are seen to be centred.

[QuiGon]

Setting pitch trim to neutral worked fine for the pitch problem.

But I still have a problem with the plane rolling to the left. It's a strong tendency and not only during take off. I have opened the control display with right CTRL RETURN and my controls are seen to be centred.

Wind?

Unbalanced loadout?

[jfri]

Wind?

Unbalanced loadout?

 

 

I don't think so. It's in the interactive tutorials I am experiencing this.

[QuiGon]

I don't know what else it could be besides wrong keybinds, wind or unbalanced loadout. :dunno:

[jfri]

I don't know what else it could be besides wrong keybinds, wind or unbalanced loadout. :dunno:

 

 

I don't see how keybinds could cause this if I don't press the keys. But I did notice that the keys for bank left and right and right left rudder caused the control deflection to go at maximum left right position by just pressing the keys once. This is different from the keys for pitching up down. I tried disabling those keys but it didn't affect the problem. I also tried disabling the plane and then enabling it again. Also this had no effect on the problem.

[Cruiser18]

Have you tried using Right CTRL + Enter and having a look at what kind of inputs is being made as you take off?

 

Might have some weird trim settings or other periphials making changes.

[jfri]

Have you tried using Right CTRL + Enter and having a look at what kind of inputs is being made as you take off?

 

Might have some weird trim settings or other periphials making changes.

 

 

Yes I wrote that earlier in the thread. And according to this display the controls are centered

[Cruiser18]

Dont know if someone's suggested it before, but do you have a replay file where it happens? Much easier to determine what the problem is then.

[jfri]

Dont know if someone's suggested it before, but do you have a replay file where it happens? Much easier to determine what the problem is then.

 

 

There are no option to save the track after a tutorial. I will see if I can get it in another kind of flight.

[Holton181]

There are no option to save the track after a tutorial. I will see if I can get it in another kind of flight.

Start it from "Missions" (select "My Missions" and navigate to the Viggen missions from there) or the Mission Editor and not from "Tutorials" and I believe you can.

[jfri]

Start it from "Missions" (select "My Missions" and navigate to the Viggen missions from there) or the Mission Editor and not from "Tutorials" and I believe you can.

 

 

I did that and the problem didn't surface. Actually find out that it is only sometimes or very often this occur and not in specific loaded flights.

I noticed that in the takeoff tutorial the plane seem to shake slightly and it's more difficult to stay on the center line during take off run.

[Holton181]

I noticed that in the takeoff tutorial the plane seem to shake slightly and it's more difficult to stay on the center line during take off run.

Do you mean it is shaking before throttling up for the taking off run?

Do you have the "sync in-game controls with joystick" option enabled? (sorry I don't have it's correct name or location in memory)