Is there a way to catch high velocity air on fire without using too much fuel?

Question

Is there a way to catch high velocity air on fire without using too much fuel?

Answer 1

you cant catch air unless it is a flamable air and if its going fast  it could will blow itself out atleast to some extent

Answer 2

The simplest is a ramjet, but of course it's really the fuel which is being oxidized, not the air.

Answer 3

Have no idea what you are talking about.  How can air be on fire?

Why do you want to "catch air"?