Creating an object with a "Jet Pack"

Does anyone have any ideas on how to create a physics object with a jetpack?

What I need is an object the detects what direction it is moving and constantly accelerates in that direction.

My initial thought is using a runtime event listener on everyframe that use get:LinearVelocity to determine the direction that it is traveling in and the applying a force in that direction but I really don’t want to use a runtime event listener either.

Just looking for any ideas thanks!

Here is a tutorial u can use to creat a game like ur idea
https://www.google.com/url?sa=t&rct=j&q=how%20to%20make%20a%20corona%20game&source=video&cd=3&ved=0CEUQtwIwAg&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D0GtUxdSeWzk&ei=SXE8UrjVLub_4AO1qICwAw&usg=AFQjCNHeO3Nqatn70iF7Wd0OTlCpL8rTww&sig2=Iv2Sc2zhLuGi3rWod3wftA&bvm=bv.52434380,d.dmg

Watch all of these

Here is a tutorial u can use to creat a game like ur idea
https://www.google.com/url?sa=t&rct=j&q=how%20to%20make%20a%20corona%20game&source=video&cd=3&ved=0CEUQtwIwAg&url=http%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3D0GtUxdSeWzk&ei=SXE8UrjVLub_4AO1qICwAw&usg=AFQjCNHeO3Nqatn70iF7Wd0OTlCpL8rTww&sig2=Iv2Sc2zhLuGi3rWod3wftA&bvm=bv.52434380,d.dmg

Watch all of these