Search found 99 matches

by paul fellows
Sat Apr 24, 2010 8:18 pm
Forum: Valveless pulsejet forum
Topic: Acoustic length
Replies: 13
Views: 12485

Re: Acoustic length

not as far as i am know
i posted this viewtopic.php?f=3&t=5747#p69585 a while ago and on one as corected it
how ever you realy need the advice of a practiced builder
good luck
by paul fellows
Thu Apr 22, 2010 7:53 pm
Forum: Valveless pulsejet forum
Topic: pulse jet theory V o.1
Replies: 28
Views: 26973

Popeye's law

Could I beg the help of a Lockwood builder, if I wanted to build a Lockwood with a one meter exhaust pipe, to be of the same pitch as a one meter valved pulse jet. How long dose the in let need to be 33.3 cm or 25 cm? :? I am going to invoke Popeye's law :D to help explain the theory of how a Lockwo...
by paul fellows
Tue Apr 20, 2010 9:35 pm
Forum: Valveless pulsejet forum
Topic: origonal ???
Replies: 33
Views: 27447

Re: origonal ???

agian sorry Thor and you are right steem in the combustion chamber = a lousey jet. but as for the other. i am a simple soul who works in simpel imiges like this. two boys each have a sled with ten bricks on them, they throw the bricks backwards at the rate of one brick every ten seconds, bill throug...
by paul fellows
Tue Apr 20, 2010 9:11 pm
Forum: Valveless pulsejet forum
Topic: pulse jet theory V o.1
Replies: 28
Views: 26973

pulse jet theory V o.1

Please heap your disapproval of this attempt at a partial pulse jet theory, upon the theory and not on the author. :) To those of you that have built three or more good jets without really knowing how they work, there will be little for you to gain from this effort. But there is plenty that you coul...
by paul fellows
Sun Apr 18, 2010 6:32 pm
Forum: Valveless pulsejet forum
Topic: origonal ???
Replies: 33
Views: 27447

Re: origonal ???

sorry i was a bit to cross with thor it is just i have been trying to get some one to help me understand pulse jet theory and geting not a lot of suport. so when thor critizised me for not doing enough reseaserch, when he had not thought enough about the sudoname he was hiding behind, i felt slighte...
by paul fellows
Sat Apr 17, 2010 9:17 pm
Forum: Unconventional, Multi-Mode and Hybrid Jets
Topic: P R Jet a ramjet from a standing start
Replies: 3
Views: 7866

Re: P R Jet a ramjet from a standing start

hi what i am sujesting is burning the fuel in Reynst at the back /bottem of the engine and using its exhaust gas, held in a stabelised vortex in place of the flame /flame holder. i supose at high speed it might be posible to inject exstra fuel into the incoming air? and yes you are right if held sta...
by paul fellows
Sat Apr 17, 2010 7:40 pm
Forum: Valved pulsejet forum
Topic: questions about pulse jets
Replies: 23
Views: 20116

what sort of plain 2

the next question is where on the plain dose the engine go? :? the most sucsseful manned flights to date have used gliders with jets on the wings :) however in terms of power to weight one big jet is better then two smaller ones :? so with one engine the options are; above the wing.there are a numbe...
by paul fellows
Sat Apr 17, 2010 7:19 pm
Forum: Valved pulsejet forum
Topic: questions about pulse jets
Replies: 23
Views: 20116

Re: questions about pulse jets

i am on expet on pulse jets but here is what i have picked up in the last month or so when a pulse jet will run with a forced air supply, but stops as soon as the air is turned of. then it is not achieving Kadenacy that is it is not sucking flame back into the jet to light the next cycle. in valved ...
by paul fellows
Sat Apr 17, 2010 6:51 pm
Forum: Valveless pulsejet forum
Topic: origonal ???
Replies: 33
Views: 27447

Re: origonal ???

well Thor
your style of dealing with people is rather abrupt. :(
and i personaly im not inclined to put a hole lot of creadance in some one who hides behind the sudoname of some one who dose that to goats :evil:
by paul fellows
Sat Apr 17, 2010 5:08 pm
Forum: Off topic forum
Topic: Did you listen? NoooOOOooo ...
Replies: 13
Views: 12109

Re: Did you listen? NoooOOOooo ...

epitaph to a pioneering aviatrix. :cry: :cry: :cry: Here lies the body of Beartix Aeortrix. her first pulse jet flight, was going alright. But when to low to bail, the valve it did fail. Dropping her right in the, :D shipyard. There was a young lady from Crew, :lol: and by pulse jet she flew. Over L...
by paul fellows
Sat Apr 17, 2010 11:16 am
Forum: Off topic forum
Topic: Did you listen? NoooOOOooo ...
Replies: 13
Views: 12109

Re: Did you listen? NoooOOOooo ...

its the best iv found so far all i seem to get are people telling me that i am wrong and that i don't understand :( whtch of couse is quite true :wink: but i'm learning :? or trying i notice that the thundercain copies only work if they stick a wet sock in one of the intakes :o perhaps if they had k...
by paul fellows
Fri Apr 16, 2010 7:57 pm
Forum: Unconventional, Multi-Mode and Hybrid Jets
Topic: P R Jet a ramjet from a standing start
Replies: 3
Views: 7866

Re: P R Jet a ramjet from a standing start

sorry wrong picture :oops: :oops: :oops:
it should have included lables :roll:
pr jet.jpg
by paul fellows
Fri Apr 16, 2010 7:53 pm
Forum: Ramjet forum
Topic: 50 mph ramjet???
Replies: 30
Views: 38982

Re: 50 mph ramjet???

is this relivant viewtopic.php?f=18&t=5785#p69804
posted on the hybrid section
by paul fellows
Fri Apr 16, 2010 7:41 pm
Forum: Ramjet forum
Topic: Static Ramjet?…
Replies: 15
Views: 22135

Re: Static Ramjet?…

i posted this viewtopic.php?f=18&t=5785#p69804 in the hybrid section. dose it count.
by paul fellows
Fri Apr 16, 2010 7:34 pm
Forum: Off topic forum
Topic: Did you listen? NoooOOOooo ...
Replies: 13
Views: 12109

Re: Did you listen? NoooOOOooo ...

First I'll tell you a story, its not as funny as it could be because, it is essentially true. :oops: Back when I was at school, way back before the invention of the pc, I was given the task of writing an essay about something that I had seen on TV that I did not like. So I set to and wrote a essay a...