How do jetpacks work?

The first challenge with the design of any jetpack is how to get the pilot off the ground without burning his legs off below the knees.

Jetpack by ZR H2O Leisure Group Ltd

The Physics of Mandalorian Jetpacks (Hint: They Aren't Jetpacks)

How to make a JETPACK in ROBLOX (like Jailbreak!)

I made a Working Minigun Jetpack. My first creation out in the workshop. : r/peopleplayground

How do jetpacks work in space? - Quora

Jetpacks Have Come a Long Way, Actually

Get Ready for Takeoff. You Can Finally Buy a Real-Life Jetpack

JetPack Aviation

It's a glorified backpack of tubes and turbines': Dave Eggers on jetpacks and the enigma of solo flight, Dave Eggers