www.pulse-jets.com

Here ist some (poor) update. I purchased more suitable mosfets with lower R_ds(on) and lower Ugs, that helps for signal steepness at the ignition coil. But my solenoid valves still have 20ms trigger time. Piezo valves available only for low pressures and low flow rates.

Any ideas?

normally you have one open and one closed end (?). if you do like my valveless PREDATOR, you have one open, and one ~75% closed end with an injector. no moving parts

good works, ganuganu ! Did you use prepared reaction mechanism out of other combustion cases, or did you setup all ~100 basic reactions by yourself? I am working with Comsol Multiphysics and love single step reactions with coupled igniton mechanisms (combustion as a simple heat source). Simulations ...

Hi guys, its's good to hear, there is still interest on these items. @ metiz: PDE means Pulse Detonation Engine - that are detonation pulses, no continuous run ;-) ...but no kidding, you are right, pulse rate can be increased from now 1.4Hz to about 5...10 Hz by using high pressure gas injection and...

hmmmm

nobody left in the PDE forum? Nobody interested any more? Not even defense industry

have a look above. New runs done in May 2012.

and here are the vids:

http://www.youtube.com/watch?v=Nn9I1RXT0TM&feature=plcp

http://www.youtube.com/watch?v=TYLmpxKcnDM&feature=plcp

Detonation shockwaves had awsome intensity. They destroyed parts of my test rig (momentum gauge)

Hi friends, new runs of Predator were done on DOT (Days of speed and Thunder, big pulsejet meeting in Rothenburg, Germany at 17.-19. May 2012, http://www.pulsotriebwerk.de). As announced before, I tested MCU controlled gas injection and ignition - with great success! Now I am posting the first image...

Thanks a lot, Larry,

I was searching a lot of time for your document, because I couldn't remember its correct name...

But today I found it, today is a lucky day!

Secrets of Advanced FWE FWE means "Focused Wave Engine", but I found no hints at suppliers sites what focused waves do in this engine? But I found much literature about "focused shockwaves" and what they can do. They can cause self-ignition in detonatable gas mixtures like hydrogen/air. Why? Because...

See some details of the test rig:

spark plug, gas injector and solenoid valve

zono

hmmm right Viv, I found some opto for less than 1$ .....lets try transistor-optos and triac-optos

zono

@metiz:
I think 1...2 Hz. Filling is the bottleneck.

@Viv:
thanks, opto-coupling is expensive, but you are right! Best for safety.

zono

thanks, Viv ! Next time I will add some effects to visualize the run parameters. First show effect will visualize the exhaust impulse (damage of a sheet of paper, push-away a paper bin....) . For measurements I will construct a impulse-pendulum to indicate the impulse ( impulse conservation law : m1...

Hi All, end of May I had some successful runs of valveless PDE "Predator" ! This videos don't look or sound very spectacular (bright daylight, microphone overblow...), but believe me: detonations blastwaves give a nice massage of your intestins! So, consider these details : wiggling and trembling fr...

announcement:

in the next days I hope to start first static tests with single-shot