Make a pulse jet engine 1958 plans

[AlexS]

Anyone build someting like this small pulse jet engine?

Nowadays with 3d printing an cnc should be interesting too!


https://www.instructables.com/Make-a-Pulse-jet-engine-Scanned-from-1958-plans/

[Vixen]

I remember those plans from when they first came out.      Wanted to build one at school during metal work lessons, but never allowed to.

If you did build one, they were notoriously difficult to start, without a large volume, compressed air supply. If you did succeed, they were extremely LOUD. The tail pipe glowed red hot, so they were also deemed to be an extreme fire risk; free flight or radio controlled flying of any pulse jet is banned in UK, due to the fire risk to both property and crops.

Would be a fun project.

Mike

[crueby]

Order replacement eyebrows first!

[Jo]

You will be popular with your neighbours if you run it 

Jo

[Sanjay F]

I remember Scrapheap challenge and Junkyard Wars in the US had episodes where they built similar jet engines.......they worked well, looked amazing and a good way to lose your hair!! 

[bent]

Colin Furze has made several fairly large sized versions on his YouTube channel.   

[AlexS]

Yeah there is also one called crazy rocket man. If I understand he use a mix of propane and diesel to cool combustion temperature.

After reading, I don't want to be bolt to early or deaf(or neighbours).

Well, at work we are thinking of adding two jets om each side of a small pitbike if only for looks.

I saw a video of JohnnyQ90 (recent one) similar size. Started quit easy with a simple foot air pump.

<a href="https://www.youtube.com/watch?v=1LimWlYIhjw" target="_blank">http://www.youtube.com/watch?v=1LimWlYIhjw</a>

Well, let first finalize some other projects!

[crueby]

Yikes! I'm sticking with my little steam engines!   

Needs a side tube to Y in partway down the exhaust, to feed in the tennis balls...  Put one across the bay!

[AVTUR]

As a student I did a lab test on a Westlands pulse jet that would have been put on the tip of a helicopter rotor blade. The duct was about 5 feet long. It was terrifying. In addition to everything said it ran at around 100 Hz and resonated one's body cavity.

A basic problem with the pulse jet is that as the forward speed increases the inlet duct starts to resonate causing the thrust drops.

I never want to see another one but they are interesting.

AVTUR