This would basically add a fourth mode to the jet-pack called glide.

*regular
*hover
*glide
*disabled

Glide mode would basically work in a similar fashion to elytra in vanilla except in having the propulsion being powered by fireworks, it would be powered by the jetpack's rocket. This new mode would allow for extremely fast air travel at the cost of high hydrogen usage. It would be fun to just fly through the sky like a plane.

I already wrote this but don't know what happened to the last one.

This seems to be a duplicate of your request that I moved to the feature requests tracker mekanism/Mekanism-Feature-Requests#55 so I am going ahead and closing this

Sorry about that, I didnt know what happened to this