A VASIMR (Variable Specific Impulse Magneto plasma Rocket) gives spacecraft travel ten times faster than a regular chemical rocket. That plasma-impulse engine is one of the most promising things for creating new and powerful rockets for interplanetary flight. The plasma ion engine can also give new kinds of abilities for the new type of spacecraft that are operating in the asteroid belt.
There is the possibility that air-breathing ion engines are the future of aviation. The problem is that there is needed a system. That puts the ion engine push against the front wall of the engine. One of the solutions is to shoot laser rays in the middle of the ion track. That causes that part of the ions are jumping to the front of the engine.
Another vision is that the ionized gas will put to travel in a screw-looking structure. That kind of ion system can use with regular jet engines as the electromagnetic afterburner. Or it can use things like electric cells or nuclear reactors as power sources. In some visions, the power satellites can pump energy to those air-breathing ion engines in the form of maser rays. That allows researchers to create the ion scramjets that are the most capable systems in the world.
The same ion thruster that is making aircraft or space shuttle fly can use to protect that thing against missiles. The ion system can turn against incoming missiles, and then the radar system can load opposite polar electric power to incoming missiles. That makes those ions will impact the missile and damage its microchips. Another thing is that ions are forming a layer that the radio waves cannot pierce.
The "VASIMR" system can also use in Earth-orbiting satellites. That must change their trajectories all the time. The thing is that the plasma-ion engine can also be used as an ion cannon. The plasma beam can target hostile satellites or incoming ASAT missiles. The plasma system can also use to deny communication between satellites and ground stations. And the ion satellite can poison the orbiter by using high-energy ions.
If those ions (or anions) have the same polarity the magnetic field with the same electric polarity can push those ions or anions away from the satellite. But if that thing is not in use that ion cloud can damage the satellite. And the ion field denies the use of radio waves as the communication tool between satellites and ground stations. In that case, the satellite must use laser communication systems. Radio waves cannot travel through the plasma or ion cloud.
https://www.eoportal.org/other-space-activities/vasimr
https://www.esa.int/Enabling_Support/Space_Engineering_Technology/World-first_firing_of_air-breathing_electric_thruster
https://phys.org/news/2022-11-air-breathing-ion-boost-spacecraft-atmosphere.html
https://www.tekniikkatalous.fi/uutiset/kuudessa-viikossa-marsiin-tallainen-on-nasan-kehittama-plasmamoottori/e2a291d1-f189-4f2e-90cf-c061ccbc93a3
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