Artificial Contrail Generator.

https://www.youtube.com/watch?v=yRrf0pXYkec https://www.youtube.com/watch?v=CO4hL2QsZFI https://drive.google.com/file/d/1rV5y3EVT4HYQFOIGlSOlm_XG2pIXUGzj/view?fbclid=IwAR1XAV_hHnI6Irvj_qgYK94F66zGzVPdV388ZM9kTv2mfWSeeOZ8NiqwaWE https://drive.google.com/file/d/1tMAIAo7Kai6ViyddDtVh3qX8Ze7w2RdG/view?fbclid=IwAR0UrO-DOVYwh_jv-eNwi8nh31Q3JWkvjcVqJuu9X9Uc7qLm4cIa0jb0Qfo