Vibrating crystalline Plastasteel allows for hypersonic speeds within the atmosphere, and can propel a ship across the Solar System. Its principles are threefold:
>Engine. Engine generates electro-magnetic and gravitic waves by exciting Hellerium-511 molecules. Therefore, even engines which don't burn Hellerium directly need to contain some amount of it.
>Propeller. The engine pumps generated waves into the superconductive hull. The shape of the hull itself serves to generate lift, while the energies also protect it from damage.
>Energy Source. Hellerium or otherwise.