RE: MythBuster TV Show (Jetcat P-60SE project)
Like others have stated, I think it will obey Newtons third law and travel in the opposite direction of the airmass flow.
Which direction it that is, will depend on how effective the “sail” is at directing the air mass. If the majority of the airmass flows back towards the turbine, the skate board will travel sail first. If the majority flows around the sail, it will travel turbine first. If there is an even split it will stay still.
I suspect it will travel sail first.
I would like to see the same experiment using a proper aerofoil section shape sail, with the air directed to flow over the sail.
Roger