Need help for science project

[A_curious_Homosapien]

There is science fair competition, and I have decided to participate in it with my friend by making an "Semi-Ion drone". It is semi-ion because i am thinking of using an compressor to  compress the air and then ionise(am i spelling this correct?) it, which i believe should provide more acceleration since more air particles are being ionised? Am I correct with my thoery? Also, I guess since there is a need of 20 kV, does it mean it's energy requirement is huge?