That my friend was the very concept that started me building with this idea of using opposing air currents to create a valve effect and one of the next versions of this uses that idea in the forward facing main air intake. Way to put that together!
Didn't seem to me that it really came to running. Besides that air-valve concept being ingenious, why not give the original Tesla Valve concept a try ?
one use is on a wide rocket - first a large single stage compressor - blade length 20 feet - compresses the air to 1/3 and provides 10,000,000 pounds of thrust. After 30,000 feet the ram jet provides thrust to 100,000 feet. A rocket engine provides thrust to 4500 mph. The turbine uses 1500 pounds of fuel. The weight is similar because of the reduced amount of surface area.
I think it would be better to call it an area of high pressure oscillating position. The internal combustion overcoming the mass air accumulating at the termination of the fuel inlets.
I am very interested but i think that if you are to build an engine that uses liquid fuel mixed with air in a fast moving jet engine, a traditional turbo jet engin is way more effective and durable because it has no valve whatsoever and no cycle.
why are there bubbles in the fuel line? is that one of those compressed bug spray bottles that you pump? maybe try using a small rc fuel pump or something like that
Couldnt we create a valveless system without the pulse jet being in motion by simply redirecting a small portion of the exhaust gas into a booster tube by the intake creating a pulse feedback vacuum loop? this way effectively over-pressure just behind the intake can effectively interrupt the airflow during combustion and resonate without the need for the pulse jet to be in motion? Sort of like how a rifle uses bypass gas to engage the push rod to load another round, but completely solid state. I think it could be done. Im thinking something like how Nitro RC cars have Booster Bottles on the intake manifold to create resonance. Dont think you would ever get the same LBs of thrust tho without an actual closed valve or intake system where you can build up more pressure, pules jets are more or less high frequency dry firing cannons lol
Hi @MrTeslonian, just a quick question - What is to stop the ignition of fuel going back up the side tubes? If there is ignition going up there then I think you are wasting some expansion energy (right now you are forcing it back down into the tube with the compressed air feed, but I imagine the pulse sends some air back out the front anyway - could be a problem in flight). Could we do something like include a small Tesla Valve along each side feed tube to stop that? I'd imagine that'd get you much higher engine efficiencies :)
I think V2- rocket has similar base design. Also they used some how self return fuel feed from exhaust fumes, because whole chamber otherwise exploded, or just died/fall in acceleration .USSR well developed it more, its still in use...space rockets..
Do you have any data or evidence that your pneumatic valve concept actually functions as intended? I imagine that the idea is that, like a valved pulsejet, there would be no reversal of flow in the intake. Do i have that right?
Do you think if you used ionized gas (state of matter) which is plasma instead of fuel. Like use a gas mix inside of a tesla coil to ionize it and use that for fuel. Just a thought let me Know if it's possible
Indeed they run well on propane, I would like one that runs on gasoline by using a pressurized tank to force the fuel in under high pressure and high speed's.
MrTeslonian! I'm' shocked! You're using Windows..and MS Paint!?!?! You're talents are to good for Microsoft! You should be using Linux! And if not, at least try Inkscape inkscape.org and OBS Studio obsproject.com Both work on Linux, Windows and Mac. So you can make better videos of your awesome designs! Hit me up! I'd gladly teach you Inkscape and OBS so you can keep making awesome videos! :)
This experiment fail to proof the theory...the ignition of PJE combustion much depend on proper ratio of fuel and air's volume in the chamber.. if it is too much air in chamber the PJE will doesnt work at all. In the valveless concept the direction of air breath must be against the direction of gas ignition.. pls you try again accordingly
This video is uncannily reminiscent of the Adam West Batmobile.
isn't the valve mounted backwards?
i see an issue of the flame front travelling back up the air and fuel mix tubes
ever think about using a tesla valve for the main air intake? that's kinda what this is right?
That my friend was the very concept that started me building with this idea of using opposing air currents to create a valve effect and one of the next versions of this uses that idea in the forward facing main air intake. Way to put that together!
awesome, can't wait to see the video :)
Didn't seem to me that it really came to running. Besides that air-valve concept being ingenious, why not give the original Tesla Valve concept a try ?
The video on the Tesla valve version will be up today!
Very nice have have you thought about putting a tesla turbine mounted to the front feeding compressed air to all ports
Have you considered a tesla check valve as the air inlet? That might do the job that you're looking for here.
Check the comments that was already asked and answered. This idea was from the Tesla valve and used a simple version of it to function.
SIMPLE? Understatement
one use is on a wide rocket - first a large single stage compressor - blade length 20 feet - compresses the air to 1/3 and provides 10,000,000 pounds of thrust. After 30,000 feet the ram jet provides thrust to 100,000 feet. A rocket engine provides thrust to 4500 mph. The turbine uses 1500 pounds of fuel. The weight is similar because of the reduced amount of surface area.
I think it would be better to call it an area of high pressure oscillating position. The internal combustion overcoming the mass air accumulating at the termination of the fuel inlets.
Have you taken any measurements of dynamic pressure in the combustion chamber and outlet(exhaust)?
Is it held down? It doesn't seem to produce enough force to push it off the bench. How is it going to power a plane?
yes it is held down.
Did you got any luck with the idea ? If yes, did you get thrust?
Looks like a lot of fun. I bet your neighbors are asking themselves "WTF is that bizarre noise again?" LOL!
In real life it is really loud and probably sounds like gun shots followed by a weird roar, when it just pops alot it sounds like machine gun fire.
Unless his neighbours are elderly Brits who lived in London. Then they’ll be running for a shelter.
I am very interested but i think that if you are to build an engine that uses liquid fuel mixed with air in a fast moving jet engine, a traditional turbo jet engin is way more effective and durable because it has no valve whatsoever and no cycle.
Sooo strange. Why are you feeding gas that contains air bubbles?
The air bubbles were a flaw in the pressurized fuel tank leaking air into the line giving the engine that stutter.
why are there bubbles in the fuel line? is that one of those compressed bug spray bottles that you pump? maybe try using a small rc fuel pump or something like that
great idea
Couldnt we create a valveless system without the pulse jet being in motion by simply redirecting a small portion of the exhaust gas into a booster tube by the intake creating a pulse feedback vacuum loop? this way effectively over-pressure just behind the intake can effectively interrupt the airflow during combustion and resonate without the need for the pulse jet to be in motion?
Sort of like how a rifle uses bypass gas to engage the push rod to load another round, but completely solid state.
I think it could be done.
Im thinking something like how Nitro RC cars have Booster Bottles on the intake manifold to create resonance.
Dont think you would ever get the same LBs of thrust tho without an actual closed valve or intake system where you can build up more pressure, pules jets are more or less high frequency dry firing cannons lol
How much thrust do you think this will generate?
Hi @MrTeslonian, just a quick question - What is to stop the ignition of fuel going back up the side tubes? If there is ignition going up there then I think you are wasting some expansion energy (right now you are forcing it back down into the tube with the compressed air feed, but I imagine the pulse sends some air back out the front anyway - could be a problem in flight). Could we do something like include a small Tesla Valve along each side feed tube to stop that? I'd imagine that'd get you much higher engine efficiencies :)
This is a form of Tesla valve1
I think V2- rocket has similar base design. Also they used some how self return fuel feed from exhaust fumes, because whole chamber otherwise exploded, or just died/fall in acceleration .USSR well developed it more, its still in use...space rockets..
the Argus V1 Pulsejet engine utilized a squarish grid of reed-style valves with direct-injection fuel nozzles nestled between reed set cages.
Do you have any data or evidence that your pneumatic valve concept actually functions as intended? I imagine that the idea is that, like a valved pulsejet, there would be no reversal of flow in the intake. Do i have that right?
Do you think if you used ionized gas (state of matter) which is plasma instead of fuel. Like use a gas mix inside of a tesla coil to ionize it and use that for fuel. Just a thought let me Know if it's possible
Is it possible to create a vacuum in order to control the volume of air needed
that fuel supply needs attention. what about hydrolysis or some other gaseous source
works pretty good. congratulations.
Neat! I want to see more.
you must use the gas that comes in those gas bottles as fuel instead
Indeed they run well on propane, I would like one that runs on gasoline by using a pressurized tank to force the fuel in under high pressure and high speed's.
This may be a stupid question but I didn't quite fully understand the diagram. Is it an actual valve or a valve action created by the pressure?
Greg Valve action created by pressure.
A farmer's Tiger torch, just not as handy or safe.
a *ring* of air pressure and not a disc
It actually looks like a convex lens
MrTeslonian! I'm' shocked! You're using Windows..and MS Paint!?!?! You're talents are to good for Microsoft! You should be using Linux! And if not, at least try Inkscape inkscape.org and OBS Studio obsproject.com Both work on Linux, Windows and Mac. So you can make better videos of your awesome designs! Hit me up! I'd gladly teach you Inkscape and OBS so you can keep making awesome videos! :)
nifty
This experiment fail to proof the theory...the ignition of PJE combustion much depend on proper ratio of fuel and air's volume in the chamber.. if it is too much air in chamber the PJE will doesnt work at all. In the valveless concept the direction of air breath must be against the direction of gas ignition.. pls you try again accordingly
A valveless unidirectional pulse jet... Any ideas how this guy is doing it? th-cam.com/video/ePWVI9sXSoo/w-d-xo.html
hi dear friend can you help me to make it?can you send me rocket's motor's plan??
abkhezr.robat@gmail.com
thank you
Wow it started At first ignite.
all pulse jets do.
Extremely fuel inefficient no matter what is redesigned.