Search found 3549 matches

by Bruno Ogorelec
Tue Nov 11, 2003 10:25 am
Forum: Valveless pulsejet forum
Topic: Big Mutha
Replies: 4
Views: 5409

Big Mutha

Guys, I need help to find out what on earth this Thermojet was used for. The origin of the picture is a manual on nuclear proliferation control (!). No data are given, but the proportions of certain details suggest that the thing is HUGE. Does anyone have any idea? Does the thing appear as big to yo...
by Bruno Ogorelec
Tue Nov 11, 2003 9:54 am
Forum: Valveless pulsejet forum
Topic: JAVFE Redux
Replies: 46
Views: 30067

AAAAARRRRRGHH !!!!

Viv wrote:
Mike Everman wrote:Oh yeah, any views on pulsing vs. continous fuel injection?
Mike
Pulsing! oh yea baby pulsing with timed ignition too:-)

Viv
OK, I know you are doing it only to make me mad. I know it. I had a valium before responding. Istill HATE IT HATE IT HATE IT!!!!!

:o)

Bruno
by Bruno Ogorelec
Tue Nov 11, 2003 8:55 am
Forum: Off topic forum
Topic: How To's
Replies: 8
Views: 4604

Re: How To's

Mike Everman wrote:Is there a rhyme or reason to why some jpg's come up on the thread, and some must be downloaded?Mike

No. I think Kenneth built in a factor of uncertainty to keep everyone guessing and make the forum less predictable.

Bruno
by Bruno Ogorelec
Mon Nov 10, 2003 3:47 pm
Forum: Valveless pulsejet forum
Topic: JAVFE Redux
Replies: 46
Views: 30067

Mike, You have provided more entertainment here in two threads than we have seen in two months. I have enjoyed this greatly. Thank you. I hate the new layout, though. First it is uneconomical in design. Your first had a nice feel of something that could be assembled from pre-cuts in a flatpack. I'd ...
by Bruno Ogorelec
Sun Nov 09, 2003 9:56 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Stuart, you are right, of course. When thinking about ducting, I usually adopt the attitude of Keith Duckworth. He once said he designed ports in his racing engines by imagining them very, very big, with himself inside. He would then think, "Now, how do I slide down there without tearing my britches...
by Bruno Ogorelec
Sun Nov 09, 2003 7:58 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

I don't quite get it? Why can't you interleave them? They look easy enough to stagger. Am I missing something?

Bruno
by Bruno Ogorelec
Sun Nov 09, 2003 7:42 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Anyone have any analysis on flow through bent pipes as relates to straight? Google came up dry out to the 6th page or so. Mike, I e-mailed you some stuff that I have. Not much, but it should help. As for bends being problematic, please look at this Russian 'trombone'. Remember that in Russia, they ...
by Bruno Ogorelec
Sun Nov 09, 2003 4:10 pm
Forum: Valved pulsejet forum
Topic: Double Whammy in RealFlight Simulator
Replies: 8
Views: 7092

Bruce, it's a damned nice looking machine. Do you have any photos of it in flight?

Bruno
by Bruno Ogorelec
Sun Nov 09, 2003 2:01 pm
Forum: Off topic forum
Topic: Wordz
Replies: 3
Views: 2448

Hank, the two are not the same thing. Every augmentor is an ejector, but not every ejector is an augmentor. Ejector is any mechanism that introduces a secondary flow into a primary in order to influence it in some way, usually to increase the mass flow rate. What we call the thrust augmentor is but ...
by Bruno Ogorelec
Sun Nov 09, 2003 1:35 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

1.) I agree, Bruce, I don't like the pre-heating of the incoming charge either Um... what heating of the charge? How much do you think charge can get heated from a few inches of duct wall? that duct wall, by the way, is far from the hottest part of the engine. In fact, it is among the coolest. I wo...
by Bruno Ogorelec
Sun Nov 09, 2003 1:27 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Re: RE: Simplicity

Mike (...) Your last design used a shape something like the letter "C". That puts the entry point into the combustion chamber on the side and fairly far back. To reiterate the point I have often made -- there is no such thing as "far back" in a a pulsejet. There is no reason for the intake to be in...
by Bruno Ogorelec
Fri Nov 07, 2003 4:22 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

stop-go-stop

Hmmmm.... Stuart, we could argue about this, I guess but it makes little sense. I am not an expert in the field. I'd get lost soon. I am not saying that there is no 'head'. Some of the velocity head gets converted into static pressure, which is a different kind of 'head'. I am saying that there is n...
by Bruno Ogorelec
Fri Nov 07, 2003 12:32 pm
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Ha-ha-ha.... Right you are. Mark 'Thixis' once (or maybe even often) said that there's nothing new in the pulsejet field -- everything you can think of has already been proposed by someone or other between 1905 and 1995. I have searched through the history of the field pretty extensively and I can s...
by Bruno Ogorelec
Fri Nov 07, 2003 9:49 am
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

Yes indeed. When I was rather younger, I toyed with a similar layout that aped an airfoil in section, thinking it could be used as an engine integral with wing. Your layout can also fit withinn an airfoil. It never occurred to me that it would shake itself loose from the aircraft quickly -- or shake...
by Bruno Ogorelec
Fri Nov 07, 2003 5:09 am
Forum: Valveless pulsejet forum
Topic: Just Another Valveless Front End
Replies: 63
Views: 32458

yes but we also have opposed high velocity gas streams, the vortexs set up should be interesting I don't think so. You need time to get vortices. The streams themselves should be slipping by each other unhindered, I think. Remember, their speed relative to each other should be well above Mach 1, po...