Advanced FWE Pulse Jet Starting Tutorial

http://www.PulseJetEngines.com

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.

• Category

  Science & Technology

[Justin Watson]

No moving parts= NO OVERHEAT. hotter you can run a pulsejet, the better. Propane gets very cold when you expand it! So therefore 100 degree weather and a red hot engine will not affect it!

[BeckTechnologies]

you're right! thats not something said very often around here.

[ITzzBradHD]

Nice hairdryer

[jboycasper]

I have a silly thing to ask but would it run better on jet fuel or propane?

[rudi de causmaecker]

I think those valveless pulso's are truly fantastic,but why are they never seen on a model airplane?

All the pulso's i've ever seen on model airplanes are the one's with valves!

[Ryan Watson]

grab the marshmallows!

[deej397]

Hey, would putting a sleeve around the combustion chamber add to the thrust? if you made it so that it tapered slightly?

[alex salguero]

Wow

[RedStarWolf]

Would there be any advantage to preheating the fuel? Like for example, by running the fuel line around the exhaust tube a few times. I know some industrial furnaces use superheated propane to achieve higher temps, cleaner burns and greater fuel efficiency without using an oxidizer. Possibly a way to use waste heat and increase fuel efficiency. It would also be a big help when using liquid fuels...

[tsooberif]

you don't lose any out of the intake, as they both point the same way!

[mcsnowman11]

The metal is hot enough to light the propane, on a bbq, its not.

[marek0086]

"The pulse-jet-engine. Your neighbours worst nightmare."