Search found 3549 matches

by Bruno Ogorelec
Thu Nov 06, 2003 11:36 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

I'm trying to imagine the reverse gas flow, the hot gas flow under positive combustion chamber pressure. Do you think it'll get flushed down the augmenter channels?Graham. Why not? It shoots straight into the augmenter channels and will vbe helped additionally by the increased static pressure in th...
by Bruno Ogorelec
Thu Nov 06, 2003 8:22 pm
Forum: Off topic forum
Topic: Morbid question but?
Replies: 9
Views: 5032

Re: Life Is Fractal

basic themes and patterns of action stretch through the ages. Brewing and is one in particular. Sex is another. Yeah, some patterns are durable and seemingly universal, but 'cyclic' implies moving through repeated phases. I don't really see that in history. You can see what look like cycles only at...
by Bruno Ogorelec
Thu Nov 06, 2003 5:53 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Re: adjustability

they certainly were resistant to my "attachment of the electrodes of knowledge to the teats of ignorance" ! ---------- The approach reminds me of my late grandmother on the mother's side. She was convinced that children had a special nerve running between the brain and the backside. "You have to st...
by Bruno Ogorelec
Thu Nov 06, 2003 4:58 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

>Must I preserve the volume/internal surface area ratios by varying the section lengths? there is a disparity. Mike, preserve the lengths as much as you can. At this size of the engine, the survace/volume ratio is less critical. I wonder, does the bend the intakes go through demand a reduction in th...
by Bruno Ogorelec
Thu Nov 06, 2003 1:08 pm
Forum: Off topic forum
Topic: Morbid question but?
Replies: 9
Views: 5032

I guess that by "a lot of boinking" you mean "a lot of bull". Yes, I agree, but it does sound nice. Also, I'm not sure the grand scheme repeats itself. I can see damned few things in the grand scheme that are cyclic. I think cyclic behavior only exists on the micro-level. OK, a lot of things _look_ ...
by Bruno Ogorelec
Thu Nov 06, 2003 6:59 am
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Yes, the four-pipe design is proven. Ask Bill Hinote. It is so much shorter than the incredibly long regular single-piper you wouldn't believe. The regular Lockwood I am calculating dimensions for at the moment is 11 feet long, stretched out, yet its combustion chamber is only 9 inches in diameter! ...
by Bruno Ogorelec
Wed Nov 05, 2003 6:43 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

You mean, it doesn't stop in your engine? No, it doesn't. That's good. Your engine will not stop the main flow into the engine, just the flow in the small bent intake passages. Most of the air will flow continuously, with the engine just taking a small gulp 200 times a second (or so). You should sha...
by Bruno Ogorelec
Wed Nov 05, 2003 6:14 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Mike, One more detail -- don't worry about utilization of ram pressure. Your engine will be able to take advantage of it to the same extent as any other pulsejet -- that is, only partial. What we call 'ram pressure' is really better called 'velocity head'. It is the kinetic energy of traveling air m...
by Bruno Ogorelec
Wed Nov 05, 2003 6:02 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Bravo!

Hey, Everman, that's the neatest idea I've seen in ages! It is not really a conventional 'air diode' (they truly are all leaky). It's more of a Lockwood-style thing, inasmuch as jets on both sides serve to create some thrust. Yes, I am certain that the front exhaust channels can be turned into thrus...
by Bruno Ogorelec
Wed Nov 05, 2003 5:46 pm
Forum: Valveless pulsejet forum
Topic: beginers valveless jet engine
Replies: 11
Views: 7435

Re: beginers valveless jet engine

SpudGunEnginer wrote:Anywase is there a simple way to build a valuveless jet engine?
----------

Nope. Without welding, you won't get very far. But, you can learn, or you can have a muffler shop do the welding for you.

Bruno
by Bruno Ogorelec
Wed Nov 05, 2003 5:41 pm
Forum: Off topic forum
Topic: Morbid question but?
Replies: 9
Views: 5032

Arthur Clarke has the answer in one of his old short stories and in the foreword he wrote to '2001, A Space Odyssey': "Behind every man now alive stand thirty ghosts, for that is the ratio by which the dead outnumber the living. Since the dawn of time, roughly a hundred billion human beings have wal...
by Bruno Ogorelec
Tue Nov 04, 2003 12:00 pm
Forum: Valved pulsejet forum
Topic: Pulsejet on Ebay : You have to look!!!!
Replies: 3
Views: 4103

I would say a thousand dollars is a fair price for an unusual antique jet engine of which relatively few have ever been made and much fewer still are likely to survive to this day. I'd like to have one, but it's a lot of money for something that is essentially just a conversation piece.

Bruno
by Bruno Ogorelec
Fri Oct 31, 2003 7:56 am
Forum: Valved pulsejet forum
Topic: Scrapheap Challenge featuring Bruce Simpson
Replies: 15
Views: 11254

Re: I'm waiting

The best TV comes from Europe, for sure. Hank ---------- From Great Britain, you mean. Can't say I've seen much that is good elsewhere. Oh, there was that quiz on the Italian TV in which the competitors won money for good answers but had to strip an item of clothing when they lost. I liked that one...
by Bruno Ogorelec
Thu Oct 30, 2003 6:30 pm
Forum: Valved pulsejet forum
Topic: Scrapheap Challenge featuring Bruce Simpson
Replies: 15
Views: 11254

[quote="scott lawson"]i wonder if the result would have been different if the afterburner worked??? ---------- I don't think so. At this level of complexity, I am quite certain a pulsejet will beat a truck turbocharger jet. Especially in such a low-speed application. Remember also that a pulsejet is...
by Bruno Ogorelec
Thu Oct 30, 2003 6:21 pm
Forum: Valved pulsejet forum
Topic: SIMPLE PULSE JET PLANS
Replies: 14
Views: 10545

Right on this website. Go back to homepage and click on the 'Pulsejet' button. I would try the Bailey if I were you. It's well proven and simple.

Bruno