Yes, part bitching, part questions. It's such a cliffhanger, somewhat dissapointing when I got to the end after three evenings of reading. But I trust Viv, and it looks like he trusts you, so I am happy that you say that it will eventually be revealed. I eagerly await.
You don't need to tell me about the difficulties of protecting an idea. I've been working on one for years now (not related to jet engines) and it seems like I'm never going to see any results.
Honesty and straightforwardness in the pulsejet business is something that has been lacking for some time. I wish you well in your ventures.
I sent Viv a couple links to some research I found on the Logan valveless pulsejet. You should take a look at it too, since your engine is of the same blood, maybe there is something in it that will help further your design even beyond Gluhareff.
Viv, I e-mailed. I'm already chilling out, I had to start a tornado of fire last night to keep warm.
Please keep me in the loop if you do anything further with the Logan plans.
Bruno, yes of course it is apparent that he was doing work for a commercial venture. But that doesn't have to mean that everything goes black once the problem is solved.
Well to summerise a bit.
The intakes of the availible plans are wrong!
The coil design of the availible plans are wrong!
The coil length was an exact match to resonate at the second harmonic of the engines fundamental frequency (bad), the new length was in the thread.
The engine that Luc's old company purchased built to those plans was able only to produce 55lbs, our final engine did 145lbs static on the test stand.
The technical manuel sold with the plans is garbage! its a marketing ploy to cover up the engines real operating mode.
Most of whats written and argued over so hotly in the old forum pressure jet section is also garbage based on the technical manuel so should be ignored.
The coil modifications were in the thread, including brackets to stop them resonating and the number of turns we went for in the end, also the heat treatment needed to stabilise them.
So actuelly most of it was published in the thread as we went along, what has not been published though is the final set of plans with all the correct dimensions and modifications in.
And that is worth a 250 gallons of propane and a lot of work! I garantee you won' stumble on the right set of dimensions though:-)
I for one did not like the fact that we had to stop publishing every thing but as some one got a bit pissy with us we had no choise as we did not want them living off our hard work.
Our plans are our derivative work with our modifications so they are free and clear of any possible issues.
But you will still need to set up a thrust test stand to tune your engine to maximum output once you have built it! we know this as we proved it! five engines were built to the same exact dimensions as the working test engine, and they were built by a very very good fabricator, not one of them hit the mark with out tuning!
This thread is actuelly the best source of tested information on the pressure jet that has ever been published as it is not based on the oppinion of any one person with a vested interest, all the information has been verifeid by actuel testing and the results posted.
sorry if the links to my old home page have gone as it was scraped and redone after a crash:-( I will have a look when I get time and repost the documents on to this site so they work again.