minimal thickness for pulsejet walls?

[nalexandrov]

What is the most minimal thickness you can make pulsejets out of for lightweight applications?

[metiz]

if you are running stationairy, no less than 0.5mm
on a plane with active cooling you can go down to 0.3mm

All asuming stainless steel!

[daab]

And how they can weld the sheets of 0.3 or 0.5 mm to fit properly sealed? with which equipment? With which technique?

[metiz]

using TIG equipement. can't go into detail about exact technique, youtube it.

[Mark]

I think it would be neat to have a small pulsejet made as thin and light as possible.

[nalexandrov]

Anyone have suggestions on MIG techniques for welding .5mm or 24 gauge steel sheet? I know it can be done just not easily.

[metiz]

I wouldn't advice building it out of normal steel that thin. It will rot away in no time.

[Mark]

I suppose 321 stainless would do pretty good. I wonder if 347 or some kind of inconel would be better or which the best? If I recall correctly Earl Bailey told me inconel is a little heavier and dents easily. I guess each alloy would have good and bad qualities depending on what you wanted to trade for.
http://www.stainlessheaders.com/tubing