Jam Jar Trial

My first pulse combustor. Started with a 6mm opening and petrol. Tried various intake diameters and fuels (98 octane unleaded petrol, shellite, and isopropyl achohol). 500mL Mayonaise jar turned out to be self sustaining with a 17mm intake and 8mm of isopropanol resting on the bottom of the combustion camber.

Just a collection of trials and ignition attempts. Ignition of the jam jar can be tricky AND DANGEROUS. Getting the air/fuel mixture just right is crucial and hard to do without any 'real' control.

Further testing will include thrust measurements for different bottle sizes and fuel combinations

Category:

Science & Technology

Tags:

• pulsejet
• reynst
• jam
• jar
• jet
• fire
• pulse
• cumbustor
• kadency
• oscillation

[mcphuk]

My first ever pulse combustor. Not really worth watching unless Ive sent you here

[robinhooodvsyou]

Couple days ago I made one out of a fire extinquisher using the same measurements than my previous jam jar jet and it works very well and puts out a huge thrust.

If you wan`t to make one, the measurements are:

Length 100 %

Width 38 %

Hole 6,76 %

For example:

Length 25 cm

Width 9,7 cm

Hole 1,7 cm

-Try to make one !

[TheLangfords]

I use a 12mm hole, a pasta sauce jar and methanol - most burns last over a minute before the heat breaks the jar.