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    Funny. Jet engines are customizable before rocket engines.

    +1 5.3 years ago
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    I really wish I had a pc…

    +1 5.5 years ago
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    Now flying cars really do exist!

    5.4 years ago
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    @Caveman999 not everyone will be able to get mods when SR2 comes to mobile mainly on iOS Also I don’t think that making weapons with the existing parts will be be a viable solution.

    5.4 years ago
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    No. 9 SSTOs are so hard to make because because of the way rocket engines use to direct their thrust(a bell) because to get maximum efficiency the chamber pressure has to be equal to the atmosphere around it meaning you need a narrow and small bell at sea level and a wide and large bell in a vacuum and because rockets go straight up the first stage engines become less and less efficient(unless they were designed to be more efficient higher up) so you need to change to another engine(this is one of the main reasons rockets are multistage the other being there is no need to carry empty fuel tanks) the solution to this is to use a aero spike engine which uses a spike instead of a bell the way it works is at lower altitudes there is greater air pressure that presses on the spike threrefore there is a narrow virtual bell formed but at higher altitudes threre is lower air pressure which puts less pressure on the spike therefore a wider virtual bell is formed but aero spike engines are still in development and we won’t see them used a lot in quite a while.

    5.5 years ago