Mini Jet Engine

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Introduction: Mini Jet Engine

About: hi i am gourav kumar.....from india....i like to busy myself in my free time making stuff and trying em out..

hi..I m Gourav ....
I have been searching a lot for plans to make a mini jet.....but not much help..
so here I m ....finding my own way....
I made a jet engine out of some scrap....it uses liquid petrol as fuel.....and it worked in the first try.....I'll try to explain every step with pics....so letz begin..

Step 1: Making Fuel Tank..

I took the needle out of a syringe.
fixed it with a eye drop bottle by melting it...
then filled the bottle with petrol ...

Step 2: Making the Compressor...

though I can't use a exhaust turbine which in turn drives the compressor.... I used an old USB computer vacuum cleaner...connected it with a pipe using a tape....used USB adapter for vac...now its ready

Step 3: The Combustion Chamber

I used a reel from a sewing machine...
and a curtain bar holder ...holed a socket pin in it....
now I had to connect these stuff with a little hammering.....done

Step 4: Exhaust Jet

this step is the easiest of all...
I cut a pipe and made cuts as shown in the figure..
then bent the cuts to make a jet shaped pipe...

Step 5: Connecting Each Components

connect every component ....
and cover the jet with a cloth blanket( it goes terribly hot even in few seconds)

Step 6: Fuel the Jet!!

so here is it....working
I have tried to capture it working..
as the fuel was manually pumped,it gave variable flame...sometimes huge flame and sometime vanishing flame...
but it gave mostly blue flame signifying proper burning....
owing to its small size,it produced a little thrust...
and producing the 'whoooosh ' sound...
I guess if I use propane instead of petrol...it wud produce better result...



not bad results for a first try I guess?
I hope you have enjoyed it as well as I did...and I wud heartily welcome your advice and questions....

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    16 Comments

    This is very dangerous! If you release the pressure on your fuel bottle it is possible to suck the flame inside it. It will explode in your hand. I've seen this happen.

    5 replies

    the fuel injection pipe is of a syringe needle( really thin for flame to enter) ...so I guess its safe....plus it is of metal so it wud absorbe heat from flame hence extinguish it before it reaches the bottle..

    well, it would be about 80-85% safe

    I agree!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*(!@#$%^&*

    It's dangerous, yes, but not for the reason you have stated.. Even if a flame somehow managed to make it back up that narrow tube, it would not set off the fuel. It would be far too rich of a mixture for any sort of combustion. If it did set off the fuel then yes, the bottle would likely rupture and spread petrol onto your hand but this is quite unlikely for this size of assembly.

    hmmm...i love this a lot...am trying to make one for my school project

    1 reply

    Where do you get a used sowing machine

    yeah....but I don't believe the freshener bottle can provide that much little amount of fuel required by it.....if it gave a little more...then it wud result in a fire.....
    still I wud try it if it works.....
    thx fr advice akash..

    1 reply

    How are you going to provide it air to mix with petrol

    Very ingenious. Keep up the tinkering.

    If it is a jet then

    1 It will produce thrust.

    2. It will be self sustaining

    if it does neither of these you have made a complicated blow lamp.