Like the magnetic field blocks radiation particles approaching Earth could a pressurized air pipe at the frontal part of a train block atmosphere that constantly slows down that train? The pipe should have such an end that emits fast air in directions that are perpendicular to the train trajectory forming a flow that looks like an umbrela. The energy lost for using the pressurized air to block atmospheric particles is ballanced by minimizing the friction for the train to be slightly faster. The problem could be that this shield may produce vacuum at the train frontal glass that's why I am asking is this even possible as a solution.
(Please,can my question migrate to engineering SE to avoid rewriting?)