Dilandu wrote:Mycall4me wrote: Why?

Because it is space. On Earth, fighter and battleship operated in different mediums: fighter in air (easy to move through, but required a lot of energy to stay in), battleship in water (hard to move through, but easy to stay in)

But in space, both fighter and battleship are in common medium. They are subjected to similar laws of dynamic. There are little to no practical reasons, why space battleship could not have similar dynamic characteristics as space fighter: acceleration, specific impulse, ect.

Also, there is no horizon in space. And no atmosphere to disperce the infrared radiation. The fighters approach would be visible by opponents right from the moment fighters ignited their engines. And long-range warfare in space is dominated by lasers and heavy missiles - the kind of weapons that fighters aren't suited to use due to their small size and limited mass.

Finally, the fighters in space are forced to compete with long-range missiles. Which are more effective by definition. The terror of rocket equation clearly states that we need propellant to accelerate a propellant. And fighter need to accelerate more then missile:

Let's just calculate, assuming that we need N ton of propellant to accelerate ton of mass to the desired speed:

A - Fighter accelerated to close with target - need N tons of propellant

B - Fighter deccelerated after attck run - need another N ton of propellant and 2N tons of propellant to accelerate this additional propellant at stage A. In total, 4N tons of propellant

C - Fighter need to accelerate back toward his home base - another N ton of propellant. So another 2N tons added on stage B and 4N tons on stage A. In total, 11N tons of propellant.

D - Fighter need to deccelerate near his home base - another N tons of propellant (another 2N tons of stage C, another 4N tons of stage B, and freaking 8N tons on A).

In total our fighter needed 24N tons of propellant to make his dashing raid and return.

Now lets look at missile of the same mass:

A - missile accelerated to close with target - need N tons of propellant.

That's all. The missile is 24 times more efficient than fighter.

Actually, with correct calculations - not those simplified - the missile would be even MORE efficient.