This isn't actually a real Iron Man suit. But it does fly. It's a flying suit made by Gravity Industries, a young British startup that builds what they call 'jet suits.' The system uses six kerosene-powered jet thrusters to let a human fly around. Honestly, it just looks cool. This tweet states that it takes 1,000 horsepower to fly—how about an estimation to check this number? The Physics of Flight Let's start off with some fundamental physics.