www.pulse-jets.com

"Motorola semiconductor devision, digging a hole with the shovel of incompetence and the pickaxe of ineptitude."

Motorola? I thought it appled to my government.

Bruno

Here's an interesting take on the rotary piston engine -- reportedly very close to practical application for the military:

http://www.regtech.com/index.php?pg=8

Bruno

I might buy it to test the pulsating combustors I have been thinking about for some time now. The big problem is where to put it. The only place I can think of is the living room, with the exhaust nozzle poking out of the balcony door. Just the thing to start party conversations. It might also make ...

In competition to Mike the Tundra Man, I posted this method in the forum years ago: This is how you calculate and draw the web (skirt, mantle or whatever you care to call it) of a truncated cone: The curve the web describes when it is unrolled over a flat surface is a part of a circle. The web itsel...

I have heard of a company manufacturing portable (well, truckable) power generators powered by a Tesla turbine. Does anyone know who they are and how they fare on the market? For some reason (if I remember right) they do not call it a Tesla turbine but something else, like a disc turbine or somethin...

Bruce, Good stuff! Brings back the reasons why I got interested in pulsejets to start with, all those years ago. The way the big 'un starts by itself is quite impressive. More proof of how important the boundary conditions are. Pulsejets obviously have to be BIG to work without fuss. The surface/vol...

Thomas, I have been running my small publishing business successfully for seven years now, using a network of between four and seven PCs, running almost exclusively MS software, and have never had any notable problems. My system has not been crashing, my applications have not quarrelled with each ot...

[quote="Joe"]Viv, those are supersonic inlets. Convergence speeds up subsonic flows. I'm not exactly sure what it does to supersonic ones, but it's something like the opposite. ---------- It does, but this is not the easiest way to slow down supersonic flow. Such ducts have to feature variable geome...

I have just learned of a guy in Croatia building a Gluey 130. He claims to be very near to completion of the thing. If he keeps in touch, I'll keep you posted on the results.

Bruno

Jesus, it looks like Apocalypse Now! How did it go... I love the smell of napalm in the morning !???


Bruno

Mark, An interesting idea, but I don't think the Rijke tube is likely to turn into an engine and produce thrust. Unlike a pulsejet, it only shakes the gas column. There's nothing to push a gob of hot gas in a particular direction. In fact, the tube needs to be vertical, so that actual movement is in...

Larry, It could be a matter of timing. If you synchronize the refilling of the bucket with the blast from the chamber, you will have two fronts of gas traveling in the same direction -- fresh air followed by the hot blast. the energy of the blast will 'climb' on top of the kinetic energy of cold air...

Yes, this is it! It also powered the Katydid drone, I think, and a few others.

As for the sound, imagine the sound these gentlemen are listening to!

Bruno

Larry, OK, now the intention of the concept is clearer to me. I still have doubts. One is the establishment of the Kadenacy cycle. The reason the Kadenacy oscillation takes place is gas inertia. Moving gas gets accelerted so much that for a while, its momentum can fight the pressure differential bet...

As far as I know, the Solar had the same kind of valve array as the Argus; only the number of grid openings was much smaller. I have no idea how easy or difficult it was to change reeds. I don't think Argus went to much trouble to provide easy replacement -- it was meant to last half an hour and the...