Search found 1055 matches

by mk
Fri Nov 17, 2006 6:51 pm
Forum: Off topic forum
Topic: Thrust without reaction mass?
Replies: 15
Views: 5646

re: Thrust without reaction mass?

Well put leo.

To express it another way round, we also quitely assumed systems under (large) friction affect. Ergo: No free-space application.
by mk
Fri Nov 17, 2006 4:17 pm
Forum: Off topic forum
Topic: Thrust without reaction mass?
Replies: 15
Views: 5646

re: Thrust without reaction mass?

Well, haven't seen your post Mike, as I wrote the following. --- The comparison to a trebuchet (better think of those with wheels) was a good point. Makes for one of the easiest way understanding the principle. The trebuchet should feature a fixed weight and arm length, in which we only shorten the ...
by mk
Thu Nov 16, 2006 5:32 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet to Stiga sledge
Replies: 38
Views: 14325

Re: re: Valveless pulsejet to Stiga sledge

is that 07x's fuel injector pipe made from copper or steel? i dont understand what VA tubing means :/ Fricke is correct; it represents a certain class of stainless steel. For your interest: It is obvious, that I should not have written "VA steel". It turned out that it is, besides "V2A" or "V4A" a ...
by mk
Wed Nov 08, 2006 2:17 pm
Forum: Valveless pulsejet forum
Topic: Valveless pulsejet to Stiga sledge
Replies: 38
Views: 14325

Re: re: Valveless pulsejet to Stiga sledge

i printed 07x plans, but i found this too http://www.pulse-jets.com/phpbb2/viewtopic.php?t=3446 it seems to be like update, should i use it? Both ducts provide the same power level. Only the -07X-2 duct is shorter, where the -07X duct was tested more until today. I would recommend that you choose -...
by mk
Mon Nov 06, 2006 12:40 pm
Forum: How to improve this site
Topic: I have sold www.pulse-jets.com To Mike Everman
Replies: 23
Views: 13273

re: I have sold www.pulse-jets.com To Mike Everman

Maybe it is just me, but why was that topic put into the Site Improvement part of the forum? !)
by mk
Sun Nov 05, 2006 6:57 pm
Forum: How to improve this site
Topic: I have sold www.pulse-jets.com To Mike Everman
Replies: 23
Views: 13273

re: I have sold www.pulse-jets.com To Mike Everman

Crass! Haven't I read that Kenneth was still "God" here? !)

Well, okay, I think everything I liked to express was written in the above posts already.

Thus:

A large Thank You to Kenneth!

And Best Wishes for the Future to Mike!
by mk
Sun Nov 05, 2006 6:50 pm
Forum: Valveless pulsejet forum
Topic: Yet another chinese valveless
Replies: 21
Views: 6429

re: Yet another chinese valveless

Very nice one, Eric!

Do you have thrust, combustor ID, and OAL measurements at hand? Would be cool. Your decision, of course.
by mk
Wed Nov 01, 2006 12:51 pm
Forum: How to improve this site
Topic: Message from the Admin
Replies: 3
Views: 3131

re: Message from the Admin

Cool, that sounds great!

But I suppose that Kenneth is still running the entire site?

Thanks again for your efforts, Mike!
by mk
Fri Oct 27, 2006 11:59 am
Forum: Valveless pulsejet forum
Topic: but it runs
Replies: 3
Views: 1569

re: but it runs

############## Note to moderators ############# Pleas move this thread to "snakeye's" original K-PT 07X thread. ######################################### well, the engine runs as I said, I've got a blue torch like flame out of the back wich produces much noise and looks and sounds like the thing I w...
by mk
Fri Oct 27, 2006 11:19 am
Forum: Valved pulsejet forum
Topic: thickness of stainless
Replies: 2
Views: 1849

re: thickness of stainless

Sounds alright.

Maybe it is better to use 0.8 mm thick steel for the combustion chamber and transition cone. Which means thicker material for hotter sections.
by mk
Thu Oct 26, 2006 5:40 pm
Forum: Valveless pulsejet forum
Topic: School Project-- GOT QUESTIONS on -- K-PT 07X --
Replies: 38
Views: 15441

re: School Project-- GOT QUESTIONS on -- K-PT 07X --

Okay, I assume you stated the tailpipe measurements in centimeters, correct? So, first thing I have to note is that you did not build exactly to spec, which could be a problem. Especially the largely oversized intake cone could cause some trouble. Anyway, without a spark plug you will have some hard...
by mk
Wed Oct 25, 2006 12:11 pm
Forum: Valveless pulsejet forum
Topic: Jims Little 3 Lb Thermojet
Replies: 297
Views: 108137

re: Jims Little 3 Lb Thermojet

-- offtopic -- That's pretty weird, Jim. MS Media Player should definitley play it without any problems. Hmmm... Well, maybe some of the folllowing helps: - Download the *.zip file again in case of something got messed up during your first download. Because the file is okay as it has been uploaded b...
by mk
Sun Oct 22, 2006 5:15 pm
Forum: Valveless pulsejet forum
Topic: School Project-- GOT QUESTIONS on -- K-PT 07X --
Replies: 38
Views: 15441

re: School Project-- GOT QUESTIONS on -- K-PT 07X --

The injector, which I presented in the blueprints, is mostly referred to as a radial "swizzle-stick" injector . It simply consists of a pipe, which has been closed on one end, so that injection orifices could be drilled radially, most likely, near that closed end. There really is not anything specia...
by mk
Sun Oct 22, 2006 1:57 pm
Forum: Gas turbine forum
Topic: Johansson´s Pocketbike
Replies: 431
Views: 186684

re: Johansson´s Pocketbike

A serious question !):
Which common IC engine powered pocket bike starts that well by hitting a button?

Very cool!
by mk
Sat Oct 21, 2006 10:41 am
Forum: Gas turbine forum
Topic: Johanssons Jet-Cart
Replies: 149
Views: 79493

re: Johanssons Jet-Cart

The GT-PC combination sounds like a very interesting experiment! That besides earlier PC-fan combination attempts.

Cool idea, Anders!