Hey everyone,

do you have a tip on how to create those airplane swirls as seen in the screenshot? Or maybe a link to a file or tutorial?

Thanks!

This is kind of old but there is some information here:
https://forums.odforce.net/topic/28509-how-to-simulate-helicopter-field/#comment-162029 [forums.odforce.net]

what your after are called Wake vortices they are bigger when the plane is slow and heavy
you could make a spiral size it accordingly and stretch it out. carve the spiral to nothing and (un-carve it by frame and rotate when animating). then sweep a circle along it scale it by point number / curve length. optional mountain sop, and convert to a vdb fog or pyro sim or scatter points inside the tube for fog cards
///////////////////////////////////////////////////
(spiral)

float angle;
vector pos = {0,0,0};
int npoints = chi('number_of_points');
float step = radians(ch('sweep'))/npoints;

for (int n=0; n<npoints; n++) {
angle = step * n; // Or: angle += step;

pos.x = cos(angle);
pos.y = angle/10 ;
pos.z = sin(angle);

addpoint(0, pos);
}
//////////////////////////////////////////////////////////////////////////
(spiral grow)
float angle;
vector pos = {0,0,0};
int npoints = chi('number_of_points');
float step = radians(ch('sweep'))/npoints;

for (int n=0; n<npoints; n++) {
angle = step * n;

pos.x = sin(angle) * angle;
pos.y = angle;
pos.z = cos(angle) * angle;

addpoint(0, pos);
}
/////////////////////////////////////////////////////////////////////////////

Wake Wash Turbulence tutorial using Axiom:

https://www.youtube.com/watch?v=V4hwPsmALJI [www.youtube.com]

Make v from this.. on your object just make 2 point of that airplane that represent wings left right feed these with two compute velocity (first only preserve original and second one compute velocity, then add point and use this.