It's been done, without superheating anything https://news.mit.edu/2018/first-ionic-wind-plane-no-moving-parts-1121 https://news.mit.edu/2018/first-ionic-wind-p

It's been done, without superheating anything https://news.mit.edu/2018/first-ionic-wind-plane-no-moving-parts-1121 https://news.mit.edu/2018/first-ionic-wind-plane-no-moving-p... The interesting question is could you do it efficiently and with sufficient thrust - I don't know.