www.pulse-jets.com

hi everyone, it's been a while since i last was here so this might has been posted already. still very interesting!
http://www.missiles.ru/foto_MAKS-2007_enics.htm
one more pic can be found:
http://englishrussia.com/2011/09/05/the ... ft-models/

pablo

ok, thanks for the answer. I will try and see how it goes.

nope, haven't read them. Will have to do it.
I still have to solve the lubrication problem, cos the bearings needed a bit of "help" to come out, so other misterious parts (and pieces) came out of from the turbo, hehe,

Pablo

hi everyone. I've started builiding a TT turbine to waste some time, but the (hydrodynamic) bearings of it are useless. So i removed them and will be changing em with STANDARD 6 mm ID, 13 mm OD ball bearings. in the skf webpage it says "reference speed: 110000". but it sounds too optimistic to me. i...

thanks!

it's been a while since i last played with pjets, but i found a nice cone at the uni's workshop and i thought it'd make a nice pjet. it's 23 cm (lenght), D=11 cm, d=5 cm the most suitable tube i could find for it is 5,5 cm i tried scalling linearly an advance FWE (the old, simple version) but i foun...

saugumas wrote:Hi,
Rossco and glop, I am planing to run tubojet CFD simulation on ANSYS, can you share your model? :)
I will post results here.

how do you convert the autocad/solid/ or wathever cad soft file into a mesh fileb (for CFX)?

i get a good working time with the 100 gr nitrate, 30 gr sugar and 30 gr glucose recipe, you can handle the fuel without gloves and still leaves enough time to make the hole with a stick or something.

pablo

yep, just having some fun. :) today i closed the big holes and it started burning in the right place and i think it even increased the speed (it started to sound as if the revs were higher) unfortunately my cheap bearings didn't like the lack of lubricating system and high temp. so i took a new one ...

this might help or at least give you an idea

http://www.enjoysky.com.cn/jet/tuzhi/fd3-64.pdf

it's the fd3 book (unfortunately in chinese), but some parts in english

Pablo

funny! i was working on something similar this week, and i tried it this morining. in my vac cleaner the compressor was also used to cool the engine, so i had to make a NGV and the turbine out of sheet metal (like fd3) the result is really crappy, so i doubt it'll work. anyway, when i lit it this mo...

despite i've only made a few rockets, i think the possible problem is that, since the mix was not melted or had a binder, when you lit it the grain lost its shape, blocked the nozzle and bang! replacing the sugar with a bit of glucose (1/4) is helpful while melting and moulding, you get a lighter (a...

there's a simple method using duct tape detailed in the plans someone upload of the kj66 sometime ago, but as John pointed out, it has to be mounted in the shaft.

Pablo

how does it use the kmno4? cos I made some attemps with it but could never "hold it" in place long enough. could you post a simple scheme or something?
thanks

Pablo

what about a foil of stainless to reflect part of the heat and then asbesto?

i tried again this morning with the other tank and still no luck, I increased then decreased the gap and still nothing, I'm getting tired of this, I'll switch to other project for a week to regain some enthusiasm and then get back to this one. (but probably with a new vac cleaner engine) thanks anyw...