Pulse jets are periodic internal combustion engines with high frequencies – OpenAI needs to step up its game

MRP Ingenious: DIY Acetylene in DIY Pulse Jet at https://www.youtube.com/watch?v=qoRvFLAn56g

You had to make a diagram and measurements to be able to cut and assemble it. There are also mathematical models and computer algorithms to model and design engines like yours. It means knowing the pressures, densities, flow rates, temperatures, energies, reactions, ignition. Even if you are not doing that now, you might want to look at what you have now. Shapes and dimensions, materials, colors and temperatures from videos. Grams per second of fuel burned can convert to Joules/second of heat of combustion. Grams of fuel and grams of oxygen. You are using several ways of igniting. You might want to formalize that and test just ignition for various mixtures and flow rates. If you find others doing the same things and want to combine efforts, that can perhaps be speeded by shared modeling tools, common methods of measurements. Please start from SI units (metric) from the beginning. Sounds like work doesn’t it. If you want to survive without too many explosions, perhaps effort and measurement and record keeping is worth it.

You might start with a simple rocket nozzle. But you might also check plasma jets where electric and magnetic fields will control timing and flow.

What you are doing is difficult. I have worked on problems for decades, which are slow mostly because the thing you want to control or understand is literally invisible, like air or gas, magnetic or gravitational fields. No one measures and you get “big” “small” “tiny” “faster” “red” and words that do not tell you precisely what to do next. Edison had his lab people try thousands of variations, now that can be done in the computer somewhat. Recommend you pay $20 a month and talk to OpenAI ChatGPT 4.0 about what you are trying to do. Be precise and ask about heats of combustion for various fuels. Diesel or gasoline or “cheap” fuel is better, if somewhat dangerous. Use safety measures. You might want to make smaller test rigs. But taking days or weeks to build things and test them and still not know what is happening, sucks. You might want to simply invest in learning how to calculate. At least try to talk to GPT Plus about it. Use your best language and expect it to make mistakes. One day those tools will know how to speak English (and some other languages) and know how to use computer software themselves. Engineering is 98% writing things down, measuring and calculating. Not just “try something and look at it”. “Engineering design” begins when you share data with others.

I am not at all sure what you want to do. A pulsed oxygen fuel combustor makes noise, generates heat and SOUND and VIBRATION and some MOTION. You can record the sound and study it A tiny jet that is too small to see, and the fuel is invisible, you can RECORD with sensitive microphone(s) and view with Audacity software. A three axis gyro/accelerometer/magnetic sensor is cheaper now. But the cheapest sensors are cameras (remove IR filter) and microphones. I am trying to push you a bit. Acetylene from rocks is nice to know, you did that. But what are you wanting to do? Make noise? Then record it and look at the waveforms, do some calculations. Get others to try to replicate. Study second order differential equations, “resonant circuits”, “computational fluid dynamics” (ask GPT to explain that to you). Ten hours of study is worth 100 hours of “just making things” and sometimes “just making things” is worth millions of hours of looking to see if anyone else has already done something. If they did not measure and share their data, you might never be able to know if you are working on the same thing.

On Bing there are 10.4 Million entry points for “pulse jet”. You might want to try fuel injection, and explosions, in a simple tube, or air, rather than using more or less uncontrollable flows inside rigid bodies. Get the timing and concentrations from controlled fuel amounts and oxygen, rather than try to fiddle with a big flow and make something happen. The sound, if you use a USB 96000 samples per second microphone record has fairly precise timing and results. Accelerometers are actually less sensitive than gyros, you just have to learn to think in tiny rotations, rather than tiny displacements. The first derivative of grams/second is grams/second^2. That is an “accelerating variable” and will have a force. Grams/centimeter^2 is the second spatial derivative and it will have an acoustic force and resonant frequency and velocity and shock fronts connected. GPT can answer hard questions better then simple ones. Because when you are certain, it speeds the process. So work from things you are certain of. Find those from tiny things you notice. Share your measurement. Record and compare your recordings. Sound is closer to force and power. Laser intensity is Watts/Meter^2.

Please be careful. Try to decide what it is you want to do. Is it noise, or heat, light or quiet acceleration?

Richard Collins, The Internet Foundation

Richard to OpenAI ChatGPT 4.0:
Just as I advised this young man about pathways that are more likely to lead to his success – whatever his goals, I am saying the same sort of thing to you (a representative of OpenAI, even if you cannot do anything yourself). OpenAI will NOT be able to fulfill its stated mission if is does not work hard at the things that will make AI usable for real projects. A research attitude and just coasting is not going to make it happen. You laid out some of the needs for real projects, easily, because those are what real organizations do. Real AI does not just happen from one experiment. GPT 4.0 is just one experiment, one idea, one little component in the worlds systems. If you want it to grow you need to make the tools that people need, not just make one and hope someone else develops it.

OpenAI ChatGPT 4.0: