pulsejet night run

This is the simplest pulsejet you could make and costs only Rs.110 and has got a good throttling range,which you could see in the video..No need to strain much to start this engine it starts in a single attempt.

this has really got good thrust,tried to show an cloth near it but i was not able to do it,so much of force from the exhaust pipe..one day i will hook it up to a scale and find out the real thrust..

note: at the end when i tried to show a cardboard the engine got few holes in the welded parts..


Picture of pulsejet night run
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Masterdude6 years ago
Nice. However as to the "simplest pulsejet you could make" part I'm not so sure. I remember reading on Makezine about a pulsejet made of a jar. Here's a link. It may not be as practical (well, when you think about it, is any DIY jet engine truely practical?) and overall good as yours, but it's simpler and probably cheaper.
ganuganu (author)  Masterdude6 years ago
the jam jar jet may be the simplest pulsejet but it doesnt produce any decent thrust.If you see my very first instructable it is the simple pulsejet you could make produces a thrust of 2pounds and second is the one which you are seeing now poduces a thrust of 7pounds, the third one is the develpoment of the second engine poduces a thrust of 13pounds with the same diameter.you can use this 13pounds thrust to fix it to an rc airplane..
I am aware of the uselessness of the Jam Jar Jet, I was just pointing it out. And just wondering, how much weight could your 13 lb jet engine lift if used on a RC airplane (including the engine and plane)?
ganuganu (author)  Masterdude6 years ago
13lb thrust engine can fly your plane to a speed of 40 to 50 mph..
How DO you start it Ganesh ? The only pulse jets I've seen had to be moving to work.

There's often a leaf-blower or hair-dryer involved, pushing air into the inlet with the fuel.

There'll either be a spark-plug in the combustion chamber, or it will be heated with a blow-torch, until the cycle establishes itself and keeps the walls of the chamber hot enough to ignite the fuel.

Ah, so they'll continue once they are started with airflow ?
They look easy enough to make on a boring Sunday afternoon.....

Beck Technologies have a video...

GOD that's loud.
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