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Re: Real Life Star Destroyer
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Originally Posted by Janus
4000° K works out to an exhaust velocity of about 110,000 m/s.
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Depending on what the Micro-Waves from the Micro Wave Emitters are heating, they are heating the domes of the Microwave Thrusters, which are Microwave Sails, when heated to 2000 Kelvin they produce 100 G's of Thrust because they reflect heat.
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Originally Posted by Janus
Joules are a measure of energy, not force
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Energy is a force.
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Originally Posted by Janus
The above is completely wrong. You can get a quick estimate of how fast it would move by using the classical kinetic energy formula:
E= mv²/2
We know the energy, E and the mass of the Ship, M so we re-arrange the formula to find v, which gives us:
sqrt(2E/m) = sqrt(2*1920j/36.280,000kg) =0.01 m/s, or about 0.036 km/hr, not even as fast as a slow walk! let alone a large fraction of light speed. (And since the speed is so slow, we don't have to refine our answer by uisng the relativistic formula, as it only varies significantly from the classical one at high fraction of the speed of light.
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I guess that makes sense since this is such a large Craft, (40,000 tons)
But it only takes about 5 hours to heat the dome of the Thruster to 2000 Kelvin, so in another 5 hours, the two Microwave Thrusters will be heated to 8000 Kelvin, causing the gigantic Craft to move at 0.02, so in a week, the Microwave Thrusters will be heated to 1320000 Kelvin and the craft will travel at 0.66 m/s, and so on.
So this propulsion system isn't going to work.
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"We believed the world would not be the same, a few people laughed, a few people cried, most people were silent, I remembered a line from the Hindu scripture, the bagavagita, Vishnu was trying to convince the prince that he should do his duty, and to impress him, he takes on his multi-armed form and says, Now I have become death, destroyer of worlds. I suppose we all thought that, in one way or another"
-Robert J Oppenheimer, The atomic bomb
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