Hypergolic fuels like dinitrogen tetroxide/hydrazene or monomethylhydrazine/unsymetrical dimethylhydrazine could be great if ignition systems were added for the rocket engines, those fuels are really toxic and volatile, but they generate a lot of ISP,don't boil off like LOX,LH and LHE, and combust when in contact with their respective oxidizer, thus making ignitions reliable and repeatable. i guess a good set of pros and cons for those fuels would be:
PROS: dense, HIGH ISP.
CONS: pricey, tendency for blowing up at the slightests impacts.

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    11.5k FalconAero

    @AtlantikWall45 yes

    7 months ago
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    11.5k FalconAero

    Need this

    7 months ago
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    I like this.

    one year ago
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    That would be great, then we can build Proton and Ariane 4 without mods (mods don't work every time)

    1.9 years ago
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    This post has been merged with this post.

    2.5 years ago
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    Yes @SyzygySoldier

    2.5 years ago
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    448 SyzFish

    @Kell Proposed, not currently in use. I think we can both agree that hypergolics would be an interesting alternative fuel.

    2.5 years ago
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    Even LH2 has been proposed as NTR propellant, and consistent ignition could be insured by using electrical ignition systems @SyzygySoldier

    2.5 years ago
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    448 SyzFish

    @Kell True, but it doesn't change the fact that LOX is not typically used in interplanetary or long distance transfer stages. Since it's not hypergolic it's more difficult to use in engines that require a number of reliable ignitions too.

    2.5 years ago
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    LOX can be prevented from boiling off by adding thermal control systems @SyzygySoldier

    2.5 years ago
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    448 SyzFish

    Agreed. Additionally, although the game doesn't model boil-off yet, it feels weird to have Kerolox for use in an interplanetary transfer stage of a spacecraft, knowing that LOX is supposed to boil off. UDMH and N2O4 may be the devil's venom but I very much like the colour of its plume in real-life rockets. I'd be very happy to see this combination reflected in the game.

    2.6 years ago
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    4,691 Edwards

    @AtlantikWall45 exactly

    2.6 years ago
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    The Fast Reaction = Fast Booms

    2.6 years ago

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