Search found 15 matches

by daab
Sun Oct 19, 2014 2:34 pm
Forum: Valveless pulsejet forum
Topic: how to set up a liquid fuled engine
Replies: 16
Views: 5838

Re: how to set up a liquid fuled engine

One possibility is a feeding of pressurized fuel towards a small inert gas cylinder as shown in the attachment. The nozzle must design it.

http://webserver.dmt.upm.es/zope/DMT/Me ... nables.pdf
by daab
Fri Jul 12, 2013 9:09 pm
Forum: Valveless pulsejet forum
Topic: fundamental frequency
Replies: 0
Views: 1832

fundamental frequency

Could you please identify the fundamental frequency of attachments, thanks
by daab
Sat Jun 22, 2013 2:06 am
Forum: Pulse detonation engine forum
Topic: Hello detonation "you look great"
Replies: 22
Views: 7672

Re: Hello detonation "you look great"

which software do you use?
by daab
Wed Apr 03, 2013 3:38 pm
Forum: Valveless pulsejet forum
Topic: Mike's Build Log
Replies: 379
Views: 112920

Re: Mike's Build Log

updates, previews, etc; what happened with the engine in the latest version?
by daab
Tue Mar 12, 2013 2:42 pm
Forum: Valveless pulsejet forum
Topic: Tesla's Valvular Conduit
Replies: 46
Views: 22637

Re: Tesla's Valvular Conduit

Bruno Ogorelec, could you illustrate this idea, showing a picture? :?: "A long time ago, I proposed a cylindrical form of the Tesla valve, Which you get if you rotate the original item around one of the long sides. You get a tube with a serrated center spike and a series of conical washers, Which wo...
by daab
Thu Jan 31, 2013 10:39 pm
Forum: Tools and Construction
Topic: welding points 1,5volts pulsejets 90mm
Replies: 3
Views: 2058

Re: welding points 1,5volts pulsejets 90mm

Hi Manolo

What brand and model of machine is?, Uses argon? It is an adaptation? is ac / dc?

daab
by daab
Wed Dec 12, 2012 6:05 pm
Forum: Valveless pulsejet forum
Topic: minimal thickness for pulsejet walls?
Replies: 7
Views: 2161

Re: minimal thickness for pulsejet walls?

And how they can weld the sheets of 0.3 or 0.5 mm to fit properly sealed? with which equipment? With which technique?
by daab
Sat Sep 29, 2012 1:13 am
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 47176

Re: M500 build log

Luc, on this engine, where you place the injector?
by daab
Mon Jan 23, 2012 2:31 am
Forum: Pressure jet forum
Topic: Gluhareff intake stage separation
Replies: 3
Views: 1993

Re: Gluhareff intake stage separation

In the picture Gluhareff intake, the separation stage is 0, but the thrust is very low 3.5 pounds. Add sound file for evaluation.

daab
by daab
Mon Oct 31, 2011 2:28 am
Forum: Valveless pulsejet forum
Topic: More free plans: 40 pound Chinese
Replies: 182
Views: 712693

Re: More free plans: 40 pound Chinese

Metiz, where you place the injector, out, middle, far inside the intake, waht are clue?, show picture please!
by daab
Sun Sep 25, 2011 3:11 pm
Forum: Valveless pulsejet forum
Topic: "Thunderchine" 55 lb thrust pulsejet plans
Replies: 142
Views: 49139

Re: "Thunderchine" 55 lb thrust pulsejet plans

Could tell us how to get the plan?

Thanks

daab
by daab
Thu Apr 21, 2011 3:57 am
Forum: Pressure jet forum
Topic: How tune in sonically 2nd an 3er stages in Gluhareff engine
Replies: 3
Views: 2626

Re: How tune in sonically 2nd an 3er stages in Gluhareff engine

Tom, larry cottrill, Mike Everman, luc, viv, someone could say something?
by daab
Tue Apr 12, 2011 1:37 am
Forum: Pressure jet forum
Topic: How tune in sonically 2nd an 3er stages in Gluhareff engine
Replies: 3
Views: 2626

Re: How tune in sonically 2nd an 3er stages in Gluhareff engine

well, I hope to help me with the solution. if I have a four-inch tube and I tone it sonically, with the following information: 1 .- The tube receives a continuous load of air-propane mixture in a 15:1 ratio 2.-The estimated speed of sound in the middle is 768 m / sec. calculated based on the formula...
by daab
Sat Feb 26, 2011 2:53 am
Forum: Pressure jet forum
Topic: How tune in sonically 2nd an 3er stages in Gluhareff engine
Replies: 3
Views: 2626

How tune in sonically 2nd an 3er stages in Gluhareff engine

Gluhareff say: The "2nd stage is 1/2 wave length and 3er stage is 1/4 of the same wave length" which means this statement? Questions: all! but for now ... - When we know that an engine is tuned? - How tune in sonically? Cutting or lengthening the stage or what? - Someone can give a lecture on attune...
by daab
Wed Oct 20, 2010 1:17 am
Forum: Pressure jet forum
Topic: Pulseramjet
Replies: 42
Views: 24362

Re: Pulseramjet

Sorry for my poor English, is English translator google.
Finally what happened to the Pulseramjet? luc and viv will agree? 3 pounds of thrust or 45? The subject is too interesting to quit.
daab