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Propellantless Spaceflight Research Paper

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Joel Day
ESS 102
Research Paper
Rough Draft #1

Propellantless Spaceflight

Heavy fuel payloads have always been an unwanted stow-away on all spaceflights. Whether it’s the 4.4 million pounds of fuel for the Space Shuttle or the few hundred pounds of Hydrazine on Voyager, propellant has always been a concern. In the Sci-Fi story I’ve chosen to write, microwave propulsion in the form of the EmDrive has been perfected and expanded on. Humans have established colonies on Mars and have outposts across the planet and the year is no 2526. Our protagonists are onboard a spacecraft and are bound towards Europa, the 6th moon of Jupiter. The story recounts approximately one year of the journey at various intervals.
There is an alternative to the traditional …show more content…

Generating just 0.02 milliNewtons (mN) of thrust from an 850 W magnetron in what was apparently a reactionless engine, the EmDrive peaked the interest of the scientific community. The law of conservation of momentum states that in a closed system, momentum is consistent, that is, the net force (F) is zero for the system. The EmDrive appeared to break this law making it a physical impossibility. Although further research will claim this untrue, the issue remains contentious to this …show more content…

The waveguide features a large plate on one side, and a smaller plate on the other where a dialectic resonator is installed to match the operating frequency of the magnetron. This is designed to create a thrust towards the smaller end as the dialectic end is non-reflective. The force enacted onto the large plate is greater than that enacted on the smaller plate and the resulting force of the system (Fg2 - Fg1) is then multiplied by the Q of the resonant assembly. The difference in force there comes from the group velocity at the end plates greater on the large end giving a higher radiation pressure. The velocities of the electromagnetic waves at each plate are near light speed, so Special Relativity applies and as such, the waveform and waveguide assembly form an open system. Therefore, the force difference results in a thrust acting on the waveguide. The actual thrust derivations are too advanced for the scope of this paper, but it should be said that all calculations are made affirming that all Newtonian laws are

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