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I have been pondering the question of how make animals stronger in unusual ways. It was during this process that it occurred to me: "Can living things naturally develop pneumatic muscle systems?" For this example we shall assume the creature is using a form of bio-organic fuel combustion engine to power the air compressor.

The idea is that the creature in question has muscles around 10 times as strong as normal for its size,relying upon the air compressor in its body. This would provide some unique challenges, namely in diet and also bodily composition.

Please let me know your thoughts on this,thank you.

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closed as unclear what you're asking by L.Dutch Jan 14 at 13:06

Please clarify your specific problem or add additional details to highlight exactly what you need. As it's currently written, it’s hard to tell exactly what you're asking. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.

  • $\begingroup$ You're asking what we call a high concept question, which isn't a good fit for our site. SE is not a discussion forum. To that end, I strongly recommend you reformat your question to be part of our Anatomically Correct series and go out of your way to meet the requirements specified for participation (in other words, you can't simply rename this post). $\endgroup$ – JBH Jan 14 at 6:29
  • $\begingroup$ We already burn our what we eat to power our muscles, that's why Oxygen is a vital gas. $\endgroup$ – L.Dutch Jan 14 at 6:36
  • $\begingroup$ Improving strength in the "usual" way is already going to be hard if you want any magnitude of strength. $\endgroup$ – Demigan Jan 14 at 8:14
  • $\begingroup$ Very well. I suppose I will have to withdraw and reformat unfortunately. $\endgroup$ – Obelisk Jan 14 at 10:05
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    $\begingroup$ "relying upon the air compressor in its body". Ummm, that is circular. What powers the compressor - hydraulic muscles? $\endgroup$ – chasly from UK Jan 14 at 10:15
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I don't think Biological Combustion would every work as the core power/fuel mechanism for any biological creature. Not only is combustion extremely destructive, the fuel would have to be very energy dense.

The biggest issue I see, is that there would be no way a biological creature would be able to maintain an environment or engine suitable for long term and consistent combustion. Combustion is hot, high pressure and destructive. You need energy dense fuel and something capable of withstanding that force for a life time. Ceramics are good, but unlike bone or antlers you have no way to repair a ceramic that has been damaged. One side has access to blood, veins and nutrients. The other side is subject to miniature explosions. So your ceramic engine heart needs to grow inwards to be able to repair itself and it needs to destroy itself fast enough so that there is still space for more the combustion to occur. This is of course ignoring that the ceramic shatters due to large impacts.

The next issue is that all of these materials are going to cost a lot of energy to produce unless your going to change the biology to something that isn't carbon based (and then its really whatever you want). Oil is extremely energy rich, and having the biological process necessary to create a spark for the explosion present from birth is going to be even harder. Your creatures are going to need a secondary digestive system just to be able to convert the wood, meat and whatever else they eat into the fuel required to power their muscles in the first place and a third system to be able to convert the wood, meat and metals into the ceramics required for your primary ceramic heart (engine).

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