Adjust the environment by dragging the mouse pointer (hold mouse
button while moving) to set the temperature and humidity of the
environment. Click on Fly button to start the plane moving. You
can change the atmospheric conditions while the plane is flying.
You have control over three aspects:
- The degree of supersaturation (the amount of the red line
that falls to the right of the saturation vapor pressure curve)
impacts the density of the contrail.
- The relative humidity impacts the rate of dissipation of the
- The wind speed (there is a maximum wind, like a jet core,
around -45C) impacts the rate of spreading of the contrail.