Search found 1032 matches

by steve
Mon Dec 19, 2005 11:55 pm
Forum: Tools and Construction
Topic: Schlieren Images for the masses
Replies: 41
Views: 19557

Re: Schlieren Images for the masses

(3) Convert the images into 24-bit color BMP files and xor the bits of the images. The changes in density of the air will move the dots of the mask a little to the left or a little to the right and when xored, it causes the dots to become darker or lighter. I am trying to generate an image showing ...
by steve
Mon Dec 19, 2005 10:26 pm
Forum: Valved pulsejet forum
Topic: Steve's tiger jet
Replies: 7
Views: 3552

Steve's tiger jet

I have finished all the machining for the engine, but I still need to buy some .15 inch stainless for the tailpipe. the fuel injector assembly has been modified to make it much more robust and the cowl has been eliminated, other then that, everything is pretty much to spec. as you can see, I am enjo...
by steve
Mon Dec 19, 2005 9:32 pm
Forum: Off topic forum
Topic: Hey guys- I'm not dead!!
Replies: 8
Views: 2697

Hey guys- I'm not dead!!

Did you guys miss me? or did no one notice I was gone? anyway... If anyone has been wondering why I havent been here for the last two months- my computer died. sorry nothing exciting like "pulsejet explosion hospitalizes local collage student" or anything like that. It looks like a lot has been goin...
by steve
Sun Oct 23, 2005 10:29 pm
Forum: Rocket forum
Topic: Propellant Question
Replies: 31
Views: 26544

Re: re: Propellant Question

would that idea work? here it is again: Mix SALTPETER..................113.2 GRAMS SUGAR.......................48.5 GRAMS SULFUR......................18.0 GRAMS in a margerin container, break up the lumps and shake for 3 minutes its done and ready to be loaded into a casing with a nozzle on it blah...
by steve
Sun Oct 23, 2005 3:03 am
Forum: Off topic forum
Topic: aberrant pop bottle fun
Replies: 39
Views: 11936

Re: re: aberrant pop bottle fun

Mark wrote:Another spontaneous combustion mix is the pool chlorine product sold at most stores. Mix it with any kind of oil and it will burst into flames readily.
Mark
do you suppose that this could be used in a hybrid rocket engine?
by steve
Sat Oct 22, 2005 8:42 pm
Forum: Rocket forum
Topic: how do i build a simple liquid or solid fuel rocket engine
Replies: 72
Views: 39187

Re: re: how do i build a simple liquid or solid fuel rocket

That's a pretty high expansion ratio. What propellant and operating pressure is it designed for? the expansion ratio is high because I am not too concerned with thrust at this point, but I would like to see some mach diamonds! It looks like I will be using KNO3 +sugar. as for operating pressure, I ...
by steve
Fri Oct 21, 2005 6:42 pm
Forum: Off topic forum
Topic: Satellite imagery
Replies: 3
Views: 1159

re: Satellite imagery

I discovered it about a year ago- it really is a great little program!
by steve
Fri Oct 21, 2005 6:34 pm
Forum: Valveless pulsejet forum
Topic: No weld Valveles pulse jet
Replies: 14
Views: 6442

Re: re: No weld Valveles pulse jet

As far as i know, its the only proven runner truly without welding, unexpected compexities, or experimentation to get it running. (Which can require a lot of knowledge, understanding and tooling) Rossco don't forget mark's pipe fitting mini logan. there have been three sucessfully built so far. all...
by steve
Fri Oct 21, 2005 6:29 pm
Forum: Valveless pulsejet forum
Topic: Hydrogen Peroxide Fuel
Replies: 14
Views: 7024

Re: re: Hydrogen Peroxide Fuel

Neat videos, Steve. Did you ask how the catalyst was set up, or what it was made of? Was the pulsation because of the gravity fed "fuel", or was it intentionally modulated? He had several types of catalyst, but silver and platnium were used most often. they were in the form of an extemely fine (and...
by steve
Fri Oct 21, 2005 6:29 pm
Forum: Valveless pulsejet forum
Topic: Hydrogen Peroxide Fuel
Replies: 14
Views: 7024

Re: re: Hydrogen Peroxide Fuel

Neat videos, Steve. Did you ask how the catalyst was set up, or what it was made of? Was the pulsation because of the gravity fed "fuel", or was it intentionally modulated? He had several types of catalyst, but silver and platnium were used most often. they were in the form of an extemely fine (and...
by steve
Fri Oct 21, 2005 6:16 pm
Forum: Rocket forum
Topic: how do i build a simple liquid or solid fuel rocket engine
Replies: 72
Views: 39187

Re: re: how do i build a simple liquid or solid fuel rocket

That's a pretty high expansion ratio. What propellant and operating pressure is it designed for? the expansion ratio is high because I am not too concerned with thrust at this point, but I would like to see some mach diamonds! It looks like I will be using KNO3 +sugar. as for operating pressure, I ...
by steve
Fri Oct 21, 2005 5:56 pm
Forum: Rocket forum
Topic: Propellant Question
Replies: 31
Views: 26544

:) Go with the sugar and KNO3 I have had quite a bit experiance with working with the traditional blackpowder and the sugar, KNO3 engines. Yes the sucrose propellant is a bit slower but that is no problem if you just increase the core depth. If you use a ratio of about 70 parts KNO3 and 30 parts su...
by steve
Thu Oct 20, 2005 4:19 pm
Forum: Rocket forum
Topic: how do i build a simple liquid or solid fuel rocket engine
Replies: 72
Views: 39187

re: how do i build a simple liquid or solid fuel rocket engi

I will probably be making some solid fuel engines as well using KNO3 and sugar. I have machined these over the last two days.
by steve
Thu Oct 20, 2005 4:04 pm
Forum: Valveless pulsejet forum
Topic: Solid fule Reynst??
Replies: 20
Views: 6990

re: Solid fule Reynst??

.2 oz thrust at about 20 Hz as measured on an electronic scale.