the jet propulsion with closed combustion type

[DFINITLYDISTRUBD]

Simpler would be to increase the pressure at which the exhaust reed valve opens.

[qumf]

DFINITLYDISTRUBD:

will you start to make this jet engine formally?

qumf

[DFINITLYDISTRUBD]

What do you mean by formally?

Currently the twin turbine quad reed ram jet I specified earlier in this thread is under construction and as mentioned there are two prototype engines already built one of which I'm afraid of and one I run regularly.
If you mean produce for proffit in numbers probably not. I'm a tinkerer and a machine buff not a manufacturer (though I wish I could afford to set up and run my own R&D and specialty fabrication firm!!!).

[qumf]

“there are two prototype engines already built one of which I'm afraid of and one I run regularly.“

since you have built one ,what's the effect compare with you current jet?
Is its combustion closed?

[GAHD]

DFINITLYDISTRUBD, you gotta take some pics and show us what this thing's innards look like.

I'm really interested in seeing the one you're afraid of, I like scary tech!

[DFINITLYDISTRUBD]

The pics are in the works!!! As for the one I'm affraid of it's mostly due to things that wouldn't really be noticable in pics. In the interest of lighter weight I used much thinner pipe (18 guage thinwall welded seam) for the chamber, turbine shroud and nozzel. So the main fear is that shortly after I put the fire to it it will explode!!!!!
Or melt open spewing fire in my general direction in a manner similar to my smoker when I got just a bit stupid and poured lighter fluid through it's smaller access door onto the hot coals... can you say 6 foot burst of flames!!! That particular incident ended with me recieving third degree burns from my fingertips to my shoulders in less then one second. I imagine that my fuel mix (gas , kerosine, oil) being fed air under pressure would cause far worse damage to me...not good, even for a pyromaniac like mysef!!!!!!!!!

Though I have idled it a couple of times. I really don't trust it!!!!!!

[DFINITLYDISTRUBD]

Now as for "scary tech" I should find and submit the pictures of my flame-thrower I built in 9th grade with help from my chem teacher!!!!!!!!!!!!!!!!!

[qumf]

from your reply,I am afriad that you don't scceed. for the sake of safty, I suggest orginally you should use thick pipe. use long nozzle and big opening. set the concentration of the mxture gas possible as low.for each combustion small amount of the new fresh gas enter chamber. after it can work then you adust the machine to eat more fresh mixture .and adjust the engine to better condition.I thought you have many years of automobile and should have these aspect of experience and have these condition.
You also need some water to cool it.
After all the safty is first. I would rather you are safe than it succeed.

Are you OK now?I hope you are not severe,

what about the enhine that you said "in regularly work".

[DFINITLYDISTRUBD]

Are you OK now?I hope you are not severe,

what about the enhine that you said "in regularly work".

I'm fine my smoker accident happened 5 years ago

As for my regularly used engine it has .25" thick wall non-welded seam pipe rated at 1200 psi so I have no fears of it failing.

[DFINITLYDISTRUBD]

Are you OK now?I hope you are not severe,

what about the enhine that you said "in regularly work".

Thank you for your concern!
I'm fine my smoker accident occured 5 years ago and Other than some nasty scars I've made a full recovery.

As for my regular use engine it has 0.25'' thickwall extruded pipe which is rated at 1200 psi so I have no worries about it failing.