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Oh yeah, could -10C weather and the engine lying in snow affect starting/running characteristics? The gas tank had been kept in the warm workshop prior to tests and we got lots of gas out, bot in gaseous and liquid mode, enough to sustain a big yellow flame at the tailpipe. But would the pressure st...

Hello again people, last weekend I finally made it to the countryside with a friend of mine. We started out trying to put together a simple Lockwood, as I already had a bunch of printouts with the necessary dimensions for any engine size. The pipe-in-pipe designs I have in mind will still have to wa...

Okay... the squeezing of air in with that fuel is what I was not sure of / what seemed the most suspicious. I'm not worried about spraying, at least not any more than with propane. Any liquid gas is pretty dangerous in the way of freezing and peeling off human skin/eyes/whatever at the same time it ...

Hi again, I know liquid fuels can be safely pressurised (given appropriate vessels / plumbing) with CO2 or nitrogen. Would it be safe to pressurise a gasoline / diesel fuel tank with regular air compressor, or will it explode? (i.e. is compressed air in a fuel tank somehow more dangerous than ambien...

It's rare that someone posts a drawing of what does not work, they usually just stop talking about it and move on. I think a whole section should be devoted to "what does not work". good idea! Though practically speaking it's much more fun to work the next great idea than document the failure! Docu...

Mike, looking at those Tharratt contraptions, they seem to have isolated the intake area pretty well from the ignition / combustion area. Probably that helps with thermal expansion trouble. Also the huge size of Tharratt intake may be compensated by the 180 degree turn. Also I know their patent coul...

Uh, I stand corrected. :) Thanks. This seems to do exactly the opposite than I thought, using vortex chambers to suck in air at strategic places instead of blowing air over the airfoil. The effect, as I understand it, is essentially the same - causing steady flow over the plane's surfaces even when ...

How about using that inner tube to heat fuel?

Or even to boil water, the vapor to be injected into the exhaust?

Oh yeah, that would require welding again.... or would it?


- ville

The profile of the flying vehicle body ensuring laminar airflow in the boundary layer of the larger part of upper surfaces of the vehicle, permitting to install on the upper part of stern the vortex boundary layer airflow control system thus ensuring steady airflow around the vehicle body. The vehi...

A Coanda lifter! Well, maybe just a Coanda drag-reducer. If I understood correctly, the "spooky vacuum trick" is to use the engines with special, strategically-placed, flat nozzles to accelerate air on the wing surface. This flow, moving fast and presumably being warm and turbulent, will stick to th...

Thanks guys! Great! Mike, about heat expansion: It only now occurred to me that the expansion is so severe. The patent suggests using heat resistant steel, ceramic coatings and whatever... the most accessible suggestion is using longitudinally corrugated tubes. This might be yet another reason (I've...

See "estatorreactores" at www.pulsorreactores.com. There's at least one plan that seem to be a pop.sci. or similar article. The aluminum fuel tank / combustor thing gives me the creeps... It seems dangerous, unstoppable and yet somehow almost as elegant and self-contained as a solid fuel rocket. The...

Bill,

Unsuccessful in which way? Run erratically, never pulsate at all, explosions..?

May I ask you more about these experiments? What fuels, what engine sizes approximately? Big, small?


Cutting and trying will commence in one week, and I'll post any results.


- ville

Does anyone know workable dimensions or the needed equations for a Tharratt engine or similar? Patent numbers, anything? Or, if these have ever been tried with a full-length augmentor shroud? As it is arguably the easiest engine to build (even for non-welders), I would think there have been some exp...

Yep, even a couple of drops ether in a plastic bottle give enough blast to hurt human ears. :) My most successful "potato gun" type experiment was a thick-walled plastic bottle with a trigger-type stove/barbecue lighter through the bottom, and a tight-fitting cardboard tube glued to the bottle mouth...