Wake Turbulence has little to no effect

Running some charts with LiveFlightData, looking at acceleration on the X,Y, and Z axes:

The points marked by the purple arrows are where I entered the wake turbulence of departing planes.

Most of the effect is shown on the Y axis i.e. up, and down. The other, smoother peaks, and troughs are me manoeuvring to stay within it, or to turn back into it. Larger spikes are where I used slew mode to reposition.

Just had another good one, coming in to it from above, passing through, then out the bottom. The purple arrows are where I entered then exited.

You can see the most active part is on Y, the green axis. There was some small amount of side to side movement, on X, and a much smaller, but higher frequency movement on Z or front to back.

Again this was in the 172.

This one was ■■■■ near perfect. I flew head on at a plane coming in to land, this time in the Rans S6S. As far as I know this plane does not have CFD. Again the purple arrows point to me entering, an exiting the wake.

Again, the majority of the movement in on the Y axis, with very little on X, or Z, but there was some. I did not encounter any rolling behaviour at all on these two tests, just jiggling up & down for the most part.

It looks very similar to what I would see the last time I tested entering a cloud, but I don’t remember how much of a difference there was between Asobo wind, and Active Sky wind on those particular tests.

This puts to bed the idea that only CFD enabled planes will be affected by it., but its effect is so minor it may as well not even be there.

3 Likes

When this was released i think it was su 2 tried same thing with su 4 - start immediately after Airbus A330 - 300 with Aviat Pitts literally a paper plane. Results = su 2 Aviat Pitts after reaching 20kts does head turn into ground that when wake turbulence hit the plane. su 4 Aviat Pitts does fly normally only small disturbances caused by normal wind.

Still bugged “logged” one year later. In SU5 Beta, we have new colors… but still “little to no effect”.

I’m also suspicious of the visual rendering. It’s nice looking but, wake turbulence don’t change or decrease at all after the touch down of the AI plane. Same when a AI plane is taking off. No radical change after/before rotation. As a PPL, I’ve learn that the wake turbulence is totally different before/after the rotation and the touchdown.


Source: Section 4. Wake Turbulence

One more thing, same blue color (light strength) for a C172 as for a 737 landing. ooook…

1 Like

Hmm, I haven’t done extensive testing, but I’ve been nearly blown off the runway by departing AI traffic if I spawn in on the runway and they depart at the same time. I assume that the mechanics driving jet wash are the same as those driving wake turbulence in flight.

1 Like

Thanks @Zadma I’ll engage a test campaign and will run several takeoff-behind biggest jet I can find :wink:

1 Like

It’s wild. I’ve been chasing wake turbulence for several flights now with no luck. Right after I asked about it and gave it a second serious attempt, I finally felt it… but actually, on the followed video it’s more the jet blast as the plane didn’t rotate ! MSFS2024 SU5 1.7.22.0, just trying to line up behind this heavy taking off 24L at KLAX.

Next is chasing real wake turbulence :wink:

3 Likes

Few more tests. Very hard to catch. The blue level had barely zero impact as expected. You need to get really in the hardest one to start feeling the plane shaking slightly.

Intermediate conclusion:

  • Jet blast seems to work properly.
  • Wake Turbulence is hard to feel. You need to really be close to the plane generated it
  • Wake Turbulence strength doesn’t seems to be link to the wing lift. Hardly no (visual) difference before/after aircraft touch down or leave the ground
9 Likes

Good writeup Vincent! That’s good constructive feedback!

1 Like

Oh it definitely works now. Try flying with a large group.
On the last BushDivers event there was 30+ planes in close formation going thru canyons. Many were getting yeeted to the ground so we had to turn wake turbulence off.

1 Like

Fixed in Sim Update 5.