Thank you! When I read the headline I wasn't even thinking of propulsion: gliders have no moving parts for propulsion, neither do solid rocket engines, so what? What I wanted to know was how on earth they made something to do the job of an aileron without moving to affect the airflow... And I was disappointed to find out that they didn't.

"No moving parts" is a dumb way to advertise this. It's a cool thing, an self-propelled ionic propulsion system, but the fact it has no moving parts isn't an especially interesting feature of it.