A different version of the advanced FWE valveless pulsejet tutorial. These little engines are available on ebay.
The engine is a valveless pulsejet with no moving parts, and easily self starts on propane, just turn on the ignition and turn on the fuel….
A valveless pulsejet is a unique type of engine with no moving parts. Unlike ramjets, which must have air blown into them at high speed, either by a blower or by traveling very fast, pulsejets can run while completely still.
They can be throttled typically between 10% and 100% thrust in the blink of an eye, and dont require any spool up time like turbines or turbojets.
Because they have no moving parts, valveless pulse jets are much easier to own and operate than RC turbines. For the cost of a ducted fan setup, you could have your own real, high speed RC jet plane.
The truth is that by the time you add up turbojet planes engine weight, fuel and oil pump weight, the computerized control system, and any onboard starting systems, you not only have a small fortune invested in the plane, but its also quite heavy. Pulsejets can be made extremely light weight, and even valveless engines are capable of pumping their own liquid fuels by the venturi effect. All you then need is your standard reciever and servos and a small battery to power it, rather than a large battery to power a fuel pump.
Duration : 0:5:42
[youtube IEzFOwP_GY4]
@BeckTechnologies I …
@BeckTechnologies I arc welded mine and it melted a hole in the side but I plugged it with a nut and welded that in and it holds water with no issue
I build one that is …
I build one that is relatively similar in design, but significantly smaller with a 2” diameter combustion chamber but it won’t start. I am using a small disposable tank, do you think thats why? I get it to start the popping cycle but very weak and the fire goes out if I increase air. so am I right about needing a bigger tank or would that not make a difference and my design is just bad?
BUZZ BOMB BUZZ BOMB
BUZZ BOMB BUZZ BOMB
DUDE YOUR VOICE IS …
DUDE YOUR VOICE IS HORRIBLE! STOP MAKING VIDEOS! YOU SUCK!
What has more …
What has more thrust a valveless pulse jet, or a valved pulse jet?
your ‘beck …
your ‘beck technologies’ logo is in the way of the engine.
nice bong!
nice bong!
Nice bong
Nice bong
Around how much …
Around how much thrust does that engine give? How much propane does it need for like 5 min of sustained 60% of thrust?
Your engines look awesome, I didn’t know pulsejets could be made without valves. nice!
can u run that …
can u run that engine in rc plane?
imagine 1 of those …
imagine 1 of those eachside of a go cart.
@demondman50
…
@demondman50
thrust isn’t the same as torque, so it’s just pounds of thrust, not foot pounds
That spark plug …
That spark plug isn’t gonna hold up for long…
One this is a …
One this is a valvless engine, and two the pressure within the propane bottle plays a large part in the performace of these engines so an extra 50psi would help.
stainless steel
stainless steel
You should not have …
You should not have to put your propane tank in warm water. Propane boils up till minus 40. You might have a problem however if you have high volume flow as it may freeze the valve.
bonjours , quel …
bonjours , quel metal utilises tu? what kind of metal? merci
foot lbs of thrust?
foot lbs of thrust?
dang this thing …
dang this thing runs whit hot you have to run it inwater cool cell to be able to use in any rocket or plain system
im not an expert on …
im not an expert on pulsejets, but it seems to me that the amount of pulses usually tend to stay the same, its just the more fuel you add the powerful the pulses will be. so ya, i think the more fuel you send into the intake the more thrust youll get. thats just an assumption
А как расчитывается …
А как расчитывается колебательная система этого двигателя ? и можно ли в неё поставить сопло Лаваля ? у меня что то неустойчиво работает !
also my uncle is a …
also my uncle is a master welder can he tig weld over the spot welds or will that even mess it up more???? also good idea about fillin it up w/ water vid it leak out of every joint on it…=/
Unfortunately no, …
Unfortunately no, if you try to arc weld it, you will melt it. Tell the guy to give your money back or leave negative feedback.
If you can record a video of you trying to fill it with water, that would be a big help to other people who decided to buy them.
hey i got one of th …
hey i got one of th spot welded ones is their any way to fix the leaks. also wat will happen if i try arc weld over the spot welds wil that fix them ??
i did read that …
i did read that they are very throttable…. but how is it done ? i making a RC plane that will have a pulse jet . is it just the amount of fuel that makes the throttleing ?