Does contra-rotating vs regular propellers, have any effect on icing? I am trying to understand whether can there be any correlation between the contra-rotating propellers and the ice accretion over the wing ? For instance, is there any evidence that ice accretion is more in regular propellers when compared to a contra-rotating propeller ?
What are the parameters for icing on the wing?


temperature
air humidity
airspeed / pressure


The rotation direction of the propeller does not effect any of this parameters. Therefore the propellers rotation direction does not affect icing.