Self Starting Valveless Pulse Jet

This is a Medium sized Valveless Pulse Jet prototype (sometimes called a thermojet) made from 20 gauge sheet steel. It self starts, and is good to go!

Category:

Science & Technology

Tags:

• Pulse Jet
• Pulsejet
• Valveless. no valve
• jet engine
• self starting
• fire
• propane
• ignition
• series of explosions
• thrust
• alternative propulsion
• skate board.

[MrRockyramjet]

Please help me to understand how the self starting works. This is pivotal technology. A self starting pulse jet solves a slew of problems for me and reduces weight. So... why does it start without blowing into it? Thank you in advance for your answer and thank you for posting this game changing break through.

[Aerosplice]

@MrRockyramjet It's not terribly complex. It works on a venturi principle, So basically high speed fuel vapor is blasted into tubes with flared ends (the intake tubes), the fuel jets sit outside of the intake tubes and cause turbulence and resulting lower pressure around the fuel jets, that lower pressure draws in fresh air with the fuel. As long as there is enough air sucked in with the fuel to cause multiple deflagrations (subsonic explosions) then the engine will continue to resonate.

[Matt1988C]

WOO! look at that baby fly!

[matejz101]

well, it makes one hell of a noise but I don't think you'll be winning any races. Good effort though :P

[brickemdown]

yeay, flaming propane tanks :3

[Zguy000]

Nice work in general, but also kodos for your metal working and design. Are you the designer, or is this a common design? If so where could I get plans? I'm no expert, a software engineer, but a hobbiest with any type of engine or motor; your engine sounds like its verging on breaking up into the next speed octave -- like it has everything it needs but something is out of adjustment. Have experimented with different length exhaust and intake pipes? What PSI did you set the propane regulator?

[puresofmeh]

Fire up the bass cannon.

[ninja6kid]

just like a harley

[TheImpqwertable]

he turn it on and my friend was like

"holy shit what the fuck is that!?"

[Doggieman1111]

bet the neighbors love you

[howitzer920]

sorry but its really fucking anoying

[soverato3]

can it power a small rc plane??

[AKAboner]

Put on little red wagon add a steering lock to sai wagon make a chiar to sit in and ride and vuala world record made for fastest toy wagon ride ever!!!!!!!

[arnold02000]

Have you rated its thrust?