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inibuilds A350 LNAV really bad

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I've gone back to the A350 (inibuilds in MSFS2024) after parking it in the hangar for a while.

The LNAV implementation is really bad. Here with a 25kt crosswind in cruise, the aircraft has to be left wing down (with left aileron AND spoiler) to maintain heading. See here https://ibb.co/6RmDjXqm

It should just crab into the wind. It's been like this for half an hour now.

Is this correct or should it be crabbing into the wind?

Edited by BWBriscoe

AMD Ryzen™ 9 9900X3D, AM5, Zen 5, 12 Core, 24 Threads, 4.4GHz, 5.5GHz Turbo
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9 minutes ago, BWBriscoe said:

Is this correct or should it be crabbing into the wind?

I have to agree that looks a bit extreme.

-B

  • Author

10 minutes after I posted this, the aircraft on its own entered a dive (all screens PFD etc were frozen) and it crashed.

It's still a pile of ****

AMD Ryzen™ 9 9900X3D, AM5, Zen 5, 12 Core, 24 Threads, 4.4GHz, 5.5GHz Turbo
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32GB GeForce® RTX 5090 Graphics Card

27 minutes ago, BWBriscoe said:

I've gone back to the A350 (inibuilds in MSFS2024) after parking it in the hangar for a while.

The LNAV implementation is really bad. Here with a 25kt crosswind in cruise, the aircraft has to be left wing down (with left aileron AND spoiler) to maintain heading. See here https://ibb.co/6RmDjXqm

It should just crab into the wind. It's been like this for half an hour now.

Is this correct or should it be crabbing into the wind?

Can you check your flight controls page to see if the rudder is deflected to the right? Is your rudder trim centered?

If the left wing is down but the aircraft isn't turning, there has to be either asymmetric thrust, asymmetric drag, or a rudder deflection to the right. Thrust looks to be symmetric, and asymmetric drag would require a relatively exotic failure, so my money would be on the rudder being deflected. (Note also that the "ball" isn't centered -- it's deflected to the left.)

If that's the case, the question then would be _why_ the rudder is deflected. This could conceivably be some bug in the A350, but the first thing I'd check is whether you've inadvertently put in rudder trim. Another thing to check would be the calibration of your rudder axis -- maybe it's slightly off-center.

Bottom line, though, I can't see how this is caused by the LNAV. If the only thing happening was LNAV commanding a left bank of about 5 degrees, you'd see the airplane turning -- and apparently, that's not the case.

Edited by martinboehme

1 hour ago, martinboehme said:

the first thing I'd check is whether you've inadvertently put in rudder trim

Yes, this is the issue. 

1 hour ago, BWBriscoe said:

10 minutes after I posted this, the aircraft on its own entered a dive (all screens PFD etc were frozen) and it crashed.

It's still a pile of ****

There's always Autosave. 

2 hours ago, BWBriscoe said:

I've gone back to the A350 (inibuilds in MSFS2024) after parking it in the hangar for a while.

The LNAV implementation is really bad. Here with a 25kt crosswind in cruise, the aircraft has to be left wing down (with left aileron AND spoiler) to maintain heading. See here https://ibb.co/6RmDjXqm

It should just crab into the wind. It's been like this for half an hour now.

Is this correct or should it be crabbing into the wind?

your rudder needs to be trimmed which may just correct things.

3 hours ago, BWBriscoe said:

I've gone back to the A350 (inibuilds in MSFS2024) after parking it in the hangar for a while.

The LNAV implementation is really bad. Here with a 25kt crosswind in cruise, the aircraft has to be left wing down (with left aileron AND spoiler) to maintain heading. See here https://ibb.co/6RmDjXqm

It should just crab into the wind. It's been like this for half an hour now.

Is this correct or should it be crabbing into the wind?

Your rudder is out of trim in this picture, deflected to the right. It can be easy to do this by accident as I think that Q and E are by default bound to rudder left/right.

7800X3D - RTX 5080 - 64GB DDR5 - Dan C4-SFX

Sounds like operator error once again.

I haven't been siiming for more than 3 weeks now, but last time I used the Ini 350, I surely cruised with crosswind components way over 50kt with no problem at all?

Must be something with your control settings... or as other suggested, trim being added (probably rudder trim) through an assignement you're not aware of (?)

Flying gliders since 1980

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By your slip indicator, looks like you are trimmed with the rudder to the right, hence the aircraft is compensating with left bank and basically flying in a sideslip.

13 hours ago, martinboehme said:

the first thing I'd check is whether you've inadvertently put in rudder trim

 

11 hours ago, dbw1 said:

your rudder needs to be trimmed which may just correct things.

 

10 hours ago, Stavros said:

Your rudder is out of trim in this picture, deflected to the right.

 

59 minutes ago, pblind said:

By your slip indicator, looks like you are trimmed with the rudder to the right

Is it really necessary to repeat the same thing over and over again? I'd think @BWBriscoe has gotten the point by now... 

Just now, martinboehme said:

 

 

 

Is it really necessary to repeat the same thing over and over again? I'd think @BWBriscoe has gotten the point by now... 

By that you can see that many posters just read the initial post and maybe the first answer and then just write an answer without reading what others have posted further down.

I frequently take 100+ knots of wind from the sides in Asia and mine works perfectly. In fact, it's probably the most reliable long hauler i have in my fleet along with the 340. Something fishy is going on in there.

CASE: Fractal Terra Silver CPU: AMD R5 7800X3D 5.0Ghz RAM: 32GB DDR5 6000 GPU: nVidia RTX 4070 Ti SUPER · SSDs: Samsung 990 PRO 2TB M.2 PCIe · PNY XLR8 CS3040 2TB M.2 PCIe · VIDEO: LG-32GK650F QHD 32" 144Hz FREE/G-SYNC · MISC: Thrustmaster TCA Airbus Joystick + Throttle Quadrant · MSFS2024 · Windows 11

20 minutes ago, Farlis said:

By that you can see that many posters just read the initial post and maybe the first answer and then just write an answer without reading what others have posted further down.

100% this!   

So frustrating (to me at least) when someone just repeats what has already been said 7 times.  It happens all the time that someone posts something and then 7 other people come and post the EXACT same thing.   

Is it really that hard to "read" the thread before posting?  OK, Sunday morning rant over LOL   Have a good day everyone.  @BWBriscoe I think it may be rudder related 😉  

Have a Wonderful Day

-Paul Solk

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4 minutes ago, psolk said:

Is it really that hard to "read" the thread before posting? 

I also think it is reasonable to expect this if the thread is not longer than two pages and something like 3 dozen posts.

If it gets longer I think it can be excused if people do not read it all.

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