Search found 1241 matches

by hinote
Tue Nov 18, 2003 6:45 pm
Forum: Valveless pulsejet forum
Topic: Worlds simplest valveless?
Replies: 145
Views: 75144

OK, now my real work is really suffering... This was fun! Thanks for the spark, Bruno, I'm starting to like this idea. Now I have to consider what I need for hydroforming!! OK, NOW you're talkin MY language! Just bell the ends of the intakes (or they won't work)(also looks like they are too long in...
by hinote
Mon Oct 27, 2003 3:46 pm
Forum: Valveless pulsejet forum
Topic: Scaling Up and Down
Replies: 10
Views: 6399

Have you measured the TSFC of your bare Kentfield engine? Even if you can't measure the thrust because you haven't fitted the flow-rectifiers, a fuel-burn rate would be useful because you could relate that to the theoretical thrust for that particular engine. I haven't been to do a whole lot with p...
by hinote
Sat Oct 25, 2003 12:14 am
Forum: Valveless pulsejet forum
Topic: Scaling Up and Down
Replies: 10
Views: 6399

One thing to watch though Bill, is that the 4-tube LH (ie: Kentfield) has (by the time you take those four intake tubes and the turbulence they produce into account) a rather high cross-sectional area and is aerodynamically "dirty". This means that at high-speeds you'll be wasting a lot of power si...
by hinote
Fri Oct 24, 2003 9:06 pm
Forum: Valveless pulsejet forum
Topic: Scaling Up and Down
Replies: 10
Views: 6399

Why don't you make a copy of the SNECMA Escopette? I don't know how big (dimensions) your engine is and how much trust it produces but the Escopette would be a good alternative, I think. It has the same kind of construction and it would be interesting to see some pictures of it running. pieter. Nic...
by hinote
Fri Oct 24, 2003 3:43 pm
Forum: Valveless pulsejet forum
Topic: Scaling Up and Down
Replies: 10
Views: 6399

Scaling Up and Down

I'm considering a large-scale version of the Kentfield 4-tube valveless PJ I recently started to run successfully. There are several good reasons for this--more power (thrust) obviously, but also better efficiency. I would like to double the available thrust, so presumably the combustion chamber vol...
by hinote
Wed Oct 22, 2003 10:25 pm
Forum: Valveless pulsejet forum
Topic: Proposed Design - Amphora with Single-Stage Tesla Valve Ring
Replies: 16
Views: 11649

There are two methods of addressing the reverse-flow issues surrounding most pulsejets: Aerodynamic valves, no matter how they're designed or constructed, are way too soft to be useful. Bruce, something HAS to be doing the job of rectifying the flow on the intake side of the L-H family. This is NOT...
by hinote
Mon Oct 20, 2003 3:57 am
Forum: Valved pulsejet forum
Topic: Ba-da boom
Replies: 5
Views: 3611

Re: Ba-da boom

[quote="Mark"] >When my brother brought over his Nov. issue for me to see, I noticed it was the same conception as the elderly man in the wacky pants standing next to it in some previous topic this forum had featured. The "elderly man" in the picture is none other than Burt Rutan's brother Dick, who...
by hinote
Mon Oct 20, 2003 3:50 am
Forum: Valved pulsejet forum
Topic: Ba-da boom
Replies: 5
Views: 3611

Re: Ba-da boom

[quote="Mark"]That's the title of an article in Air and Space's magazine Nov. 2003. It has the 4-tubed wonder, a General Motors Quad 4 cylinder head that controls the flow. Two truck superchargers are driven by a two-stroke engine. The article says don't try to buy any Quad 4's in any Dayton area ju...
by hinote
Wed Oct 15, 2003 3:42 pm
Forum: Valved pulsejet forum
Topic: Problems with my pulse-jet!!!!
Replies: 5
Views: 4360

Re: Problems with my pulse-jet!!!!

I build a pulse-jet but it dont run, it only run some seconds an than it stops, what is the problem????. I use ASTM 1070 0,15mm tempered stell, is this a problem or no???? Please email me urgentlly!!!!! Sounds suspiciously like a fuel-delivery problem (starvation). Is it carbureted? What kind of fu...
by hinote
Sun Oct 05, 2003 6:06 pm
Forum: Valveless pulsejet forum
Topic: horned beast/status
Replies: 1
Views: 2404

horned beast/status

Hi all: I just thought it would be fun to be the first one to post something on the valveless PJ forum--since that's where my primary interest lies. My pulsejet project is on hold, now probably for at least another week. I've torn down the front-end, and I'm replacing the flat plate with much heavie...
by hinote
Sat Oct 04, 2003 1:58 am
Forum: Valved pulsejet forum
Topic: Congratulations
Replies: 14
Views: 10668

Thank you, Kenneth, for caring about all of us who are participants on your forum.

You have done so much for all of us pulsejet enthusiasts; I can personally assure you that all your efforts are worthwhile on our behalf.

I vote "yes!" for this new forum format.

Bill Hinote