Hope this is OK to post here - it's quite a new video and one I hadn't seen before - a really good compilation of low-altitude vortices and aerodynamic contrails on take-off and landing.
Look at 5:12 for a nice propeller contrail from a Flybe Dash 8![Smile :) :)](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Look at 5:12 for a nice propeller contrail from a Flybe Dash 8