Search found 3549 matches

by Bruno Ogorelec
Thu Oct 30, 2003 6:05 pm
Forum: Off topic forum
Topic: Spin It On A Lathe
Replies: 1
Views: 1910

Mike, that would be very wasteful, as most of your substnce would end up in shards all over the place. Much better to make a valveless out of glazed clay. Use it by first sloshing some pot slurry inside, so that a layer is deposited evenly over the inner walls. Dry is and then fire the jet. You can ...
by Bruno Ogorelec
Wed Oct 29, 2003 9:21 pm
Forum: Tools and Construction
Topic: Weight of fuel to thrust
Replies: 6
Views: 5164

Pieter is right -- it's a great-looking engine. Congratulations!

Bruno
by Bruno Ogorelec
Wed Oct 29, 2003 10:11 am
Forum: Valved pulsejet forum
Topic: Losenge-Valve Array Completed
Replies: 5
Views: 4801

Simplicity is next to sanctity

>Rather than using a compicated welding sparker like last time, I used plain old book matches to light her up. How simple is that? ---------- Mike, you are a man after my own heart. Next, we might try to build a chamber out of oak staves and iron hoops. With the throw-match-into-bunghole (TMIB) igni...
by Bruno Ogorelec
Tue Oct 28, 2003 4:06 pm
Forum: Valved pulsejet forum
Topic: Resizing solved, but...
Replies: 29
Views: 15401

Resizing solved, but...

I have just realized that the Russian pulsejet book contains (among other highly interesting stuff) also a rough and ready method for pulsejet resizing -- a problem that has stymied the best minds of this forum for years. The problem is that my Russian is good enough only to buy vodka in a Moscow st...
by Bruno Ogorelec
Tue Oct 28, 2003 12:35 pm
Forum: Valved pulsejet forum
Topic: P-90 pulsejet
Replies: 9
Views: 5755

Tundra Man this is something for you!

A pulsejet plant? I'll buy one, even if it only yields common or garden Dynajets. I can see it clearly, a deep cellar with fancy artificial lighting, pot growing in one corner and pulsejets in the other. Tundra Man, what do you think? Grow merchandise and the transport conveyance all in one go. Bruno
by Bruno Ogorelec
Mon Oct 27, 2003 5:47 am
Forum: Valved pulsejet forum
Topic: Original Schmidt Tube
Replies: 9
Views: 7475

>So how do you propose to support this conduit all the way up to the ozone layer? With an escargot-powered UAV, of course. >Will it have to be timed? No. I have quit the idea of timing ever since my early youth, when I overheard a wise man pronounce, "Time flies!" The idea, coming from a sage, excit...
by Bruno Ogorelec
Sun Oct 26, 2003 10:05 pm
Forum: Valved pulsejet forum
Topic: Scrapheap Challenge featuring Bruce Simpson
Replies: 15
Views: 11254

Scrapheap Challenge featuring Bruce Simpson

Has anyone seen today's Scrapheap Challenge? We don't get British programs in Croatia, and I only saw a description on their website, which sounded like great fun. A big point scored by Bruce.

Does anyone have comments after seeing the show?

Bruno
by Bruno Ogorelec
Sun Oct 26, 2003 10:02 pm
Forum: Valved pulsejet forum
Topic: Original Schmidt Tube
Replies: 9
Views: 7475

frothing at the mouth

Viv, Alas, no new weed is involved. I'm just older and wiser now. Also, the ugly stuff that's found its way into the forum since my fiery debates has left a sour taste in my mouth. I am no longer that strongly interested in a debate actually yielding a result. I am no longer strongly troubled to see...
by Bruno Ogorelec
Sun Oct 26, 2003 4:04 pm
Forum: Valved pulsejet forum
Topic: Original Schmidt Tube
Replies: 9
Views: 7475

Original Schmidt Tube

This is what the original Schmidt tube looked like in section.

Bruno
by Bruno Ogorelec
Fri Oct 24, 2003 5:48 pm
Forum: Valveless pulsejet forum
Topic: Scaling Up and Down
Replies: 10
Views: 7245

Well, I would say neither. The way to do it is to use one of the fancy computer modeling programs developed by several research teams over the past 20 years or so and run it on on a supercomputer. Look for parameters that will yield double the thrust of your existing engine without straying too far ...
by Bruno Ogorelec
Fri Oct 24, 2003 5:29 pm
Forum: Off topic forum
Topic: Rand Cam engine
Replies: 9
Views: 6262

Re: Big putt-putt

The little side effect of the local cats and dogs going insane when you turn on an ultrasonic cleaner has been worked out then:-) Viv ---------- What? Pets prefer to stay dirty? :o) BTW -- all those newfangled rotaries are fine, but look at this absolutely gorgeous oldfashioned engine made by 3W Mod...
by Bruno Ogorelec
Fri Oct 24, 2003 5:06 am
Forum: Off topic forum
Topic: Rand Cam engine
Replies: 9
Views: 6262

Big putt-putt

Mark, I think we've had it in the forum before. It is a grown-up version of the putt-putt toy boat engine, done by the guy who actually started with those toys. The thing was tested on real-life boats, too, with some success. It worked well, but it just isn't that much better than the stuff people n...
by Bruno Ogorelec
Thu Oct 23, 2003 9:23 pm
Forum: Valveless pulsejet forum
Topic: Proposed Design - Amphora with Single-Stage Tesla Valve Ring
Replies: 16
Views: 12843

Another thing. To avoid having teh ignition start from the 'amphora' bucket, I would close it off. I know that you hope to use it as a reflector, but that idea is (in my opinion) doomed anyway and will prevent this new design from functioning properly. You just don't want ignition to start right in ...
by Bruno Ogorelec
Thu Oct 23, 2003 9:20 pm
Forum: Valveless pulsejet forum
Topic: Proposed Design - Amphora with Single-Stage Tesla Valve Ring
Replies: 16
Views: 12843

Larry, This last picture -- the thing may actually work in this configuration. I don't think the first approach would have worked, as it pitted the exhaust gas from one side of the ring against the same gas from the other side head on. This one removes this and pushes hot gas from one side only. Or ...
by Bruno Ogorelec
Thu Oct 23, 2003 8:59 pm
Forum: Off topic forum
Topic: Rand Cam engine
Replies: 9
Views: 6262

Jesus, is there any way to slow down the pesky animation? My head spins. Offhand, it looks like a version of a vane-type compressor, but there's obviously an additional twist in there.

Bruno