m8 Engine - Low thrust/high efficiency engine for small probes

[JoePatrick1]

This tiny engine gives out a small amount of thrust however in a vacuum, has very high efficiency to make up for it. It requires its own special fuel tanks containing hydrazine and hydrogen peroxide. Also includes a short and tall adapter for the engine. Full part info in images section.

Screenshots:

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Edited August 5, 2014 by JoePatrick1

[Azimech]

Nice, I might give it a go.

I'm just not too sure about the mass of the engine, 900 kg seems a bit much, I believe 90 kg would be more realistic. And ehm ... is the vacuum ISP a science based value or more in the realm of science fiction?

[JoePatrick1]

Nice, I might give it a go.

I'm just not too sure about the mass of the engine, 900 kg seems a bit much, I believe 90 kg would be more realistic. And ehm ... is the vacuum ISP a science based value or more in the realm of science fiction?

The reason I made it so heavy was just to balance it a bit more - you can adjust it in the config if you want. The ISP is just a number I made up based on the nuclear & ion engines.

[jfull]

That vacuum Isp is higher than that of a nuclear engine, and is pushing into what you would expect for an ion engine.

I really really doubt that any chemical engine could be that efficient.

[undercoveryankee]

Any chemical propellant has a theoretical Isp limit based on the energy produced and the molecular masses of the combustion products. http://astronautix.com/props/h2oazine.htm gives the vacuum limit for hydrazine/HTP as 327 s, with the best chemical reactions that have been discovered (hydrogen/fluorine) capable of 470.

Anything above the upper 400s has to be obtained by supplying additional energy from outside the propellant. Nuclear engines use heat from a nuclear reactor, and ion engines use electricity.

[Rainbowtrout]

uw0tm8

In all seriousness, this looks like a good mod. I might end up trying it out!