Sharpy

[1.1.3] Yet another EM drive

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My first mod, an EM drive.

jtW0GyU.png

 

 No external dependencies, no-frills thingy that is more of a curiosity than a game-changer, due to 0.1kN of thrust (vs Dawn's 2.0), higher EC consumption, serious heat production, and a bit higher mass and price. But primarily, the thrust. Maybe, just maybe you could use it on Gilly to keep yourself pushed to the surface?

Download here.

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The infamous EM drive.

 

  • 100 Newtons of thrust (1000x what the real thing has!)
  • Heavy electric energy usage
  • Running rather hot
  • 300kg
  • Infinite delta-V

The drive uses no fuel, just electricity, but the EM radiation does wear its structure over time, ejecting atoms of its shell into space. This is represented by 1 unit of solid propellant - which should last it a good few years; if you treat the lost mass as reaction mass, the drive has Specific Impulse of 10 million seconds. Also, the drive is entirely unaffected by atmospheric pressure

 

The model is a "brass&copper" recolor of stock Ion drive, and it's available in the same research node.

 

 

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Is this based on recently released research material at emdrive.com ? I was just reading the article and thought how cool it would be to have this on KSP :) In theory if superconductor is used maybe it should not get hot?

Test rig: 100kg (the final prototype could be less than half that).
Microwave power: 334W
Thrust: 96mN

Edited by andriusst
Added test rig specs

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3 hours ago, andriusst said:

Is this based on recently released research material at emdrive.com ? I was just reading the article and thought how cool it would be to have this on KSP :) In theory if superconductor is used maybe it should not get hot?

Test rig: 100kg (the final prototype could be less than half that).
Microwave power: 334W
Thrust: 96mN

If it was based on any recent research, or following the real thing it would be totally, absolutely useless in KSP.

14.25EM/s energy input, no clue how that converts to watts, but calculated so that one gigantor can run one engine in LKO, along with its cooling and a probe core. If 1EM/s is 1KW as some sources suggest, then 42 times more.

100N thrust, so 1000 times stronger and still sleep-inducing.

300kg, like the first test rig.

KER says heating is 900KW, but I don't think 300kg of metal would survive nearly a megawatt of heat for more than a couple seconds, while this thing can run at full power for minutes at a time before it begins overheating. I'd say the 14KW of heating power is a reasonable estimate.

And superconductors or not, if it takes 334W of power on input, and outputs 0.096N per second, the loss to kinetic energy is minimal - the rest of the energy must get somewhere. Some will be radiated out as microwaves, but the rest will convert to heat.

 

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