Maximum Thrust 2003 Movie Mega
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The approach I took to finding the high acceleration times is to set the drive to burn continuously over a 24 hour period. Because the thrust decreases from a peak value to zero in less than three seconds, the acceleration can go from 100 G to 10 G in 60 seconds, 5 G in 120 seconds, and 1 G in 250 seconds. The acceleration to 60 G at the launch of the MPD drive burns for 60 seconds, from 60 G to 40 G for 10 seconds, then to 20 G for 15 seconds. This is the first stage of the acceleration sequence. The second stage of acceleration is a 20 minute burn at 20 G, and then a 10 second burn from 20 G to 10 G, the last of which ends the acceleration sequence. This is the non-gimbaled rocket plane mode. Using this timing, the first stage of acceleration is at over 50% of the maximum thrust for 30 seconds, then about a third of the maximum thrust for 25 seconds, and then one third of the maximum thrust for 20 seconds, then 0 thrust for about five minutes, and the second stage of acceleration is over 20 G for 10 seconds. This sequence of acceleration and deceleration, repeated over 24 hours, causes the total acceleration to reach 100 G in one day.
If you want to calculate the current that will be required to keep the spacecraft safely away from the earth's magnetic field you have to take into account the thickness of the spacecraft. If you assume a 10m diameter cylinder, the current will be 3.3 mega amperes, resulting in a neutron flux of 2.8 x 109 neutrons per second, or in other words two neutrons per second.
The spacecraft is scalable to about 180 metric tons (1.1N of thrust). The next step is to increase the mass to 210 metric tons with a total of three stages. The first is a biosphere with a crew of four that will live for five years. The second stage will have an integrated propulsion system.
The MPD is the heart of the spacecraft. It creates the thrust to move the Sazabi and everything else in its way with a 12 high-thrust engine (for the Earth to Mars travel alone). The MPD is a modular, durable and easy to maintain system. It consists of a reaction chamber, a vacuum tube and a nozzle. The reaction chamber contains the fuel and electrical energy source. The fuel is a mixture of liquid hydrogen and polyethylene, the electrical energy comes from the Direct Energy Converter. The vacuum tube is the main part of the engine system and transforms the electricity into high pressure hydrogen and oxygen. The nozzle then directs the exhaust flow. 827ec27edc