Jacobi1981 wrote:as for the use of a "fuel" i seriously doubt that is a realistic future technology. everything is switching to pure "energy" based. i believe the "generator" should be the sole factor involved with space travel, weapons, shields, etc...
as for the current technology the most "efficient" method i've heard about is the ion drive but its thrust is miniscule. even that system required several pounds of a chemical thats not easily obtained.
how do you propose we would use a "fuel" to travel fast, and efficient?
our most powerful rockets can accelerate things in space very quickly, but they need hundreds or thousands of pounds of liquid hydrogen ... and oxygen.
How would you move without
fuel in a realistic setting?
To generate thrust you need something to push from, and that is usually matter you take with you, the propellant.
Fuel is the stuff you use to get your energy from, which for example the xenon or argon in an ion drive does not does.
The gases are the propellant, just inert mass.
In chemical rockets fuel and propellant are incidentally the same, as you use the hydrogen as energy source and reaction mass.
There is maybe a way of creating a reactionless drive, which does not need propellant.
The Quantum Vacuum Plasma Thruster, which is currently investigated by NASA.
They even have better thrust per kilowatt ratio than modern ion engines O.O.
But im carefully optimistic regarding these, as it just seems too good...