Propulsion engines use a wide array of physics and science fiction in an attempt to achieve subluminal and superluminal space travel.
Many use gas and ions created by propellants stored on board the spacecraft for them to function. None of them have achieved near space light propulsion and certainly none of them use Matter Antimatter (30 to 50% of light speed), linear accelerators (50 to 90% of light speed), or Soliton Optical Resonating Interface (1 to many multiples of light speed – Faster than Light Travel) for propulsion.
The reason Matter Antimatter is so attractive for propulsion is the energy density that it possesses for large mass space ships needed to give forward momentum. Antimatter physics is that annihilation is the complete conversion of matter into energy governed by Einstein’s famous equation known as the energy-mass relation E=mc2, rather than just the part conversion that occurs in fission and fusion.
This basically states that mass and energy are interchangeable, with the amount of energy released in conversion being equal to the mass converted multiplied by the speed of light squared. In other words a small amount of mass converted releases a tremendous amount of energy.
For the Antimatter phase of the propulsion to work a semi-circular ablation plate containing heavy elements is needed. When the subsequent Gamma radiation from antimatter/matter annihilation occurs heavy element particles, i.e. lead, are blasted from the surface of the ablation plate surface producing movement in the opposite direction under Newton’s F=MA law.
As the space ship approaches 30% to 50% of light speed the Antimatter propulsion operation is completed. Next the LINAC will keep operating but only using the near light speed electrons for propulsion increasing the star ship speed further approaching 50% to 90% of light speed.
Where the faster than light speed technology using interstellar soliton wave energy will be synchronized with the ships soliton optical resonating interface. The resonating optical interface will utilize the solitons wave energy to increase the speed of the star ship.
For example, imagine a boat drifting down a river with the same speed of the rivers current. Now to increase the star ships speed further towards multiples of C (186,000 mile/se.) new harmonics of the solitons are programmed into the optical resonating interface a kin to the shifting of gears on a ten speed bike.
Matching the resonant frequency of the solitons will allow for light speed travel of the star ship and matching subsequent harmonics of the solitons wave energy will increase the star ship to new interstellar speeds.
Now it will be possible to go to other star systems in the Milky Way Galaxy.