Create Aeronautics: Vapor Trails

Ships from Create Aeronautics gain condensation rings at propeller blade tips and grey smoke from their engines. Fast ships pull vapor, while a propeller that spins up from standstill coughs out a short burst of smoke. Wingtips leave white streaks above 20 m/s that fade after a few seconds, and the effects grow longer and stronger as RPM and airspeed rise. Low hovering ships kick up debris matched to the block below, such as sand, grass or a spray ring over water, and a V-shaped foam trail forms behind the stern.

Almost every Create Aeronautics ship gets the effects, including ones using small andesite or wooden propellers and large bearing-mounted sail propellers. Each effect can be switched off separately, and an intensity slider along with adjustable thresholds for speed, RPM and altitude control when it appears. Only the client needs the mod, so it changes nothing on the server, and no packets are sent for installation. Files are published for NeoForge 1.21.1 only, and the code is open source under the MIT License.