www.pulse-jets.com

Thumb up too Ben, Thanks!

Hi Viv, Forming limit of sheet metal is strain-rate sensitive. Under quasi-static condition (for example hydraulic bulging ) we cannot bulge the tube too much, as forming limits are easily reached, then necking occurs and leads to failure. But under high strain rate it is different story. In high st...

Have you ever tried high strain rate forming. Use a concrete mold, place the tube inside, and put in some black gun powder, ignite it and the tube will be deformed in high strain rate to the desired shape, this is a no welds design :-)

Excellent job, Forrest. If the modelled trend is correct, I mean at least we did see the combustion resonates inside the CC, I think the "compressibilty" is probably not so important a factor for a pulse combustor. However one thing still confuses me, how did you put into account the gas expansion d...

Hi,

Here is a link of jetjoe, but I don't recommend it :

http://www.jetjoe.com/main.php

You can try WASP too, 20lbf, designed by Phill Heward, not too expensive and the design is superb, smaller, lighter than KJ66, yet it is more powerful.

http://www.heward-microjets.co.uk/

Bruno, nothing was implied. They are producing engines with their own design, I might have provided a little help, that's all, Hehe

We should be able to beat this, right?

No you can't. Jetbeetle inside. heee

This is not copyrighted I think, because it is moe than 50 years old. Remove it if I am wrong.

Here's a diagram of what I'm talking about. Each stage is mounted on a stationary central spindle and rotates on it's own set of bearings. Does that clear up what I'm talking about Horace? Marlin Hi Marlin, Thanks, now it's clearer for my perception your idea. I do hope any new innovative ideas can...

Other features--no stators, just counter-rotating stages for compressors and turbines. Advantages of multi-spool turbines can be realized without the complexity of multiple spools operating concentrically. Hi Marlin, Could you sketch some drawings to illustrate your idea, as a picture is worth a th...

Hi Forrest, Yeah, I suppose you must have been very busy. Don't put aside the topic of weight reduction yet, I found it very interesting, and had decided to take a look at it more seriously. I now have a new project to investigate theoretically the possibility of weight reduction by using Einstein's...

I am a little bit confused as to what will be happening to MDT ? Will it become obsolete ?

Many R&D centers in here use Solidworks more often.

Edit : OK, I've got the answer, IV is included "free" with MDT, you buy IV, you get MDT too. poor MDT !

Hi John, Thanks for your postings, the info is very helpful. I was more or less on the sidelines as a spectator, just been curious as to what will be happening. A quick question, did you use any nozzle guide vanes, you need to direct the production gas normal to the turbine blades before impinging t...

Hi,

You can use this equation to calculate the length of any sides. Yes it holds for irregular triangles.

A/sina = B/sinb = C/sinc

where A, B, C = length of sides,
a,b,c = corresponding angle of side which length is A, B, C respectively

its going to be at least a 5 stage, that is 5 layers of blades on the cone and 5 on the shell, this should give me the comrpession i need for it to self sustain. Excuse me for my lame English in both reading and writing, when articles get too long I'll just skip it. Are you refering to an axial com...