An aircraft uses immense amounts of energy to stay airborne.
Most airplanes burn fossil fuel with air to get energy, but that has no future.
This site is always under construction, so don't mind the mess. I imagine mass as a vortex of energy, probable donut shaped. Transforming an energy flow from somewhere into a machine, is how to get power. Just a tiny bit of the total amount of energy in mass is released, when a chemical reaction takes place. The freed energy flow can now be used to get a machine in movement.