Search found 421 matches

by ace_fedde
Thu Sep 20, 2012 7:18 pm
Forum: Valveless pulsejet forum
Topic: Synchronous Injection
Replies: 17
Views: 5560

Re: Synchronous Injection

Do you have a PJ to experiment with, which model? No. I may build one this winter if I decide to go ahead with this project. I need to keep costs down. That's often the problem with great ideas and plans. If you're working alone you should be a PJ-expert, owning a number of different working PJ's, ...
by ace_fedde
Thu Sep 20, 2012 2:41 pm
Forum: Valveless pulsejet forum
Topic: Synchronous Injection
Replies: 17
Views: 5560

Re: Synchronous Injection

John,

Do you have a PJ to experiment with, which model?
Where are you located? I might have some interesting stuff for the project.

Fedde
by ace_fedde
Sun Sep 02, 2012 2:31 pm
Forum: Valveless pulsejet forum
Topic: ADV Chines, Eric built for sale. 20lb
Replies: 5
Views: 3557

Re: ADV Chines, Eric built for sale. 20lb

Hi Jim,

If you were living in Holland :( , I'd come pick it up immidiately....

Fedde
by ace_fedde
Thu Aug 30, 2012 2:01 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53661

Re: M500 build log

I was first going to recommend flanges as reinforcements. But flanges will locally reduce the possibility for thermal expansion: flanges.gif This "choking" of the radial thermal expansion and the fact that stainless tends to get brittle and cracky (on a molecular level) after heating, might cause ev...
by ace_fedde
Wed Aug 29, 2012 8:16 pm
Forum: Jet Vehicles, All Types
Topic: Jetkart and a couple of questions
Replies: 4
Views: 3873

Re: Jetkart and a couple of questions

Jack,

You might wanna shield off your gas tubes from the heat of the PJ, or your hair is gonna be on fire, and more..
And perhaps you have to turn the gas bottle upside down for better fueling.

Fedde
by ace_fedde
Wed Aug 29, 2012 8:01 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53661

Re: M500 build log

Jim,

The more details the better, also about failures etc.
Share them here please.

Fedde
by ace_fedde
Wed Aug 29, 2012 7:58 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53661

Re: M500 build log

Haha! I've been in Croatia again for a while. But when I left Holland was a safe place to be; now? not so sure anymore .... :lol: :lol: I know that garden, I know that shed; guys, believe me, it looks all much smaller on the pictures. It's just awesome. Metiz, want to put this one also on your skate...
by ace_fedde
Tue Jul 17, 2012 5:24 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53661

Re: M500 build log

I have suggestions and ... , materials 8) I've a whole bunch of fuel pumps and nozzles for high pressure hot water claeners. They heat with diesel. Also I have a great deal of experience in replacing diesel by waste vegetable oil from restaurants .... 8) And I happen to be stockpilling this oil beca...
by ace_fedde
Sun Jul 15, 2012 11:14 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53661

Re: M500 build log

O.k., So that was my first reaction after reading this thread the first time, a bit in shock and disbelieve. Now here comes a real reaction: Bwa :lol: hahah haha Bw :lol: aa haaah :lol: aahaah :lol: :lol: :lol: :lol: Wanna be part of this, wanna be part of this!!!!!!! 8) :evil: 8) :twisted: 8) 8) 8)...
by ace_fedde
Sun Jul 15, 2012 11:04 pm
Forum: Valveless pulsejet forum
Topic: M500 build log
Replies: 161
Views: 53661

Re: M500 build log

metiz wrote:Ace_Fedde, are you still on the forum?
I can roll sheet up to a lenght of 1 meter (3 feet for you americano's)

Fedde
by ace_fedde
Thu Nov 10, 2011 2:00 pm
Forum: Rocket forum
Topic: Competition to launch a nano satellite into space……
Replies: 5
Views: 3467

Re: Competition to launch a nano satellite into space……

Mmm,
I would take a few weatherbaloons and first "float" my rocket and launchplatform into the stratosphere. From there it shouldn't be "to hard" te get in orbit.

Fedde
by ace_fedde
Thu Nov 10, 2011 11:25 am
Forum: Valveless pulsejet forum
Topic: Looking for plans? Look here.
Replies: 28
Views: 1669545

Re: Looking for plans? Look here.

Thread about augmentors / ejectors with research papers on effects on length, dia, etc.

viewtopic.php?f=3&t=6066&p=74767#p74767

Fedde
by ace_fedde
Thu Nov 10, 2011 11:19 am
Forum: Valveless pulsejet forum
Topic: augmenter for M40
Replies: 25
Views: 9153

Re: augmenter for M40

'Knew I had them. 'Been looking a long long time for 'em. Found 'em: AUGMENTOR.pdf NASA TM-2005-213854[1].pdf Rob Miller AIAA-2009-1063[1].pdf The Effect of Pulse Length and Ejector Radius on Unsteady Ejector Performance Wilson.pdf Unsteady Ejector Performance An Experimental Investigation Using a P...
by ace_fedde
Tue Oct 11, 2011 7:55 pm
Forum: Jet Vehicles, All Types
Topic: Turbine powers lawnmower
Replies: 1
Views: 1968

Re: Turbine powers lawnmower

Haha! I like the farmers boots she is wearing :lol:

Fedde
by ace_fedde
Tue Oct 04, 2011 11:34 am
Forum: Valveless pulsejet forum
Topic: Thermo-Jet information pack
Replies: 8
Views: 4978

Re: Thermo-Jet information pack

Bedankt! (thanks),

It went also to:
viewtopic.php?f=3&t=1483&p=74447#p74447

Fedde