Search found 381 matches
- Sun Apr 01, 2007 10:04 pm
- Forum: How to improve this site
- Topic: html and php help, please
- Replies: 11
- Views: 15341
Re: html and php help, please
Anyone know why the logo I made for the main site gets crunched up? It's supposed to be 90 pixels tall. I suspect that the frame that holds top.htm is of fixed height. I am new at this, so any help would be great. If you use te 2 files I send you it wil look alright. only chanced a few numbers and ...
- Thu Mar 22, 2007 10:42 pm
- Forum: Valveless pulsejet forum
- Topic: Let's make valveless turbine bicycles!
- Replies: 56
- Views: 52807
Re: turbo bike
Thanks, guys. Yes it is made for ram air on the intake, intake tuned for about 100m/sec. Design goal is 25mph Nice project but be careful, how many RPM its gone spin?. Maybe around 4000 TPM, you will have to balance it very good, if you don’t want to shake of your bike, and it probably explode be...
- Tue Mar 13, 2007 11:28 pm
- Forum: Valveless pulsejet forum
- Topic: Another twin pipe success !
- Replies: 47
- Views: 47046
exhaust tubes
I now of pulsecombustors with 36 exhaust tubes.
Look here.
http://www.auer-gianola.fr/pages/produi ... atoire.php
Look here.
http://www.auer-gianola.fr/pages/produi ... atoire.php
- Sun Mar 11, 2007 8:27 pm
- Forum: Valved pulsejet forum
- Topic: where
- Replies: 7
- Views: 7176
buy a pulsejet
look at te last post of this topic
http://www.pulse-jets.com/phpbb2/viewto ... highlight=
http://www.pulse-jets.com/phpbb2/viewto ... highlight=
- Sun Mar 04, 2007 10:14 pm
- Forum: Valveless pulsejet forum
- Topic: new resonator
- Replies: 2
- Views: 3153
new resonator
Check out my new pulsecombustor, I don’t can give dimensions, I only can say it works different than normal pulsejets, the sound reduction is enormous. Still it delivers a little trust, with a recuperater it gives halve a kilo of trust. Here is a video on YouTube. http://www.youtube.com/watch?v=am...
- Sat Feb 24, 2007 7:33 pm
- Forum: Ramjet forum
- Topic: Ramjet helicopter
- Replies: 18
- Views: 26471
ramjet starter
Te engine is from a Puch, I had one when I was 16 years old it looks like this.
- Sat Feb 24, 2007 7:19 pm
- Forum: Ramjet forum
- Topic: Ramjet helicopter
- Replies: 18
- Views: 26471
ramjet starter
Here is a picture of the starter motor of the Kolibrie ramjet helicopter.
I get this picture from somebody out of Israel, the are planning to make it fly again in the future.
I get this picture from somebody out of Israel, the are planning to make it fly again in the future.
- Thu Feb 22, 2007 8:36 pm
- Forum: Rocket forum
- Topic: Solid fuel questions
- Replies: 60
- Views: 61924
aerospike
Hi Viv maybe a linear aerospike will be a possibility no central positioning problems here.
google search
What about a solid piece of oxidiser and a solid piece of fuel almost thatching each other on the burning area, controlling the burn rate by the distance between the them.
google search
What about a solid piece of oxidiser and a solid piece of fuel almost thatching each other on the burning area, controlling the burn rate by the distance between the them.
- Sun Feb 18, 2007 12:14 pm
- Forum: Valveless pulsejet forum
- Topic: ~~~~First Valveless!!~~~~
- Replies: 29
- Views: 27138
~~~~First Valveless!!~~~~
Rahul your intake pipe is way to long, I don’t replayed on your post because in the picture it didn’t seem welded together yet, and in the sizes you give in the measurements it looks ok (if you meant inside diameters), the 1/6 ratio off inside diameter/length is a good starting point. In your pi...
- Sat Feb 10, 2007 8:08 pm
- Forum: Valveless pulsejet forum
- Topic: Augmentor thrust increasements
- Replies: 19
- Views: 18703
augmenters how the work?.
I think the basic of augmentation is as follows. Presume we have two gas masses. One standing still (the air), with a mass of 1. And one moving(the exhaust gasses) also with a mass of 1. The still standing air has no motion energy. The moving exhaust gasses has motion energy, lets say speed 100. The...
- Sat Feb 10, 2007 9:00 am
- Forum: Valveless pulsejet forum
- Topic: Augmentor thrust increasements
- Replies: 19
- Views: 18703
augmention
I was thinking you replied to my/Leo’s postBruno Ogorelec wrote:Mike, I am no scientist. I'm a college dropout turned political analyst
I get that to sometimes, already 46 years old times flies by.Bruno Ogorelec wrote:Sorry, a lapse of an old and tired brain.
- Sat Feb 10, 2007 8:03 am
- Forum: Valveless pulsejet forum
- Topic: Augmentor thrust increasements
- Replies: 19
- Views: 18703
augmention
Also, one should not forget the thermal side of the process. Low-temperature exhaust produced by Jetex and turbojets/fanjets benefits but a little from augmentation. High-temperature exhaust of a typical pulsejet benefits much more. That's why (on pulsejets) the benefit is much greater on the short...
- Fri Feb 09, 2007 8:45 pm
- Forum: Valveless pulsejet forum
- Topic: Augmentor thrust increasements
- Replies: 19
- Views: 18703
- Fri Feb 09, 2007 8:42 pm
- Forum: Valveless pulsejet forum
- Topic: Augmentor thrust increasements
- Replies: 19
- Views: 18703
Straight Augmentors
Maybe you are right Larry but I still have big doubts, this is a fun thing to find out. I just tried blowing into some pipes and noticed the effect you described, but this was most noticeable with a thick walled pipe and almost undetectable with a thin walled pipe. Also it was stronger with a flared...
- Fri Feb 09, 2007 7:11 pm
- Forum: Valveless pulsejet forum
- Topic: Augmentor thrust increasements
- Replies: 19
- Views: 18703
augmentors
I doubt of this straight augmentors will ad a lot of drag at high speeds, its impossible to me that some pressure on there surface will give trust positive or negative, they work by increasing the resistance for the exhaust pulses from the pulsejet, and so keeping the high pressure period slightly l...