No Free Lunch, hp cid torque gearing

Scody21 said

There is some disagreements in circles about jet engines looking at the weight of fuel consumption per hour vs weight of fuel the plane can carry. And that the fuel usage is way lower thus the A/F ratio is vastly different than an ICE engine.

The other one is, why are Oxygen enriched fuels like Q16 being used in N/A racing engine if O2 has no power. Don’t flame a fire…. LoL seems that more O2 makes for a better fuel burn reaction…

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How many jets burn gasoline? Of course the AF is different. Not only that, but combustion happens in cycles, jet aircraft steadily consume fuel to produce heat, and most of the work done is to expand air across a power recovery turbine in order to generate more work. It's also easier to sustain the process in a jet engine across a wider operating regime (higher altitudes) than a piston engine.

The oxygen in oxygenated fuels doesn't add power, it crutches engines that can't ingest more from the atmosphere. There's a practical limit though, since some amount of non-reactive atmosphere gets heated and expanded by the heat released from combustion. I haven't looked deeply, but I bet there's certain gasses which would expand more and gain heat faster than nitrogen (which makes up the bulk of our air) and would increase the efficiency of an ICE engine by reducing the amount of waste heat in the exhaust stream.

Heck, even older aircraft captured some of the waste heat from radiators to boost propulsion. Same from the exhaust stacks...

At the end of the day, it's still a matter of how much chemical energy you start with, and how much you turn into work.