Search found 80 matches

by cudabean
Wed Dec 24, 2003 1:47 am
Forum: Off topic forum
Topic: Russian Flying Saucer
Replies: 9
Views: 6437

Russian Flying Saucer

This article at Wired is interesting. It describes a flying saucer that the U.S. Navy is interested in for reconnaisance drone and STOL cargo applications. It uses some sort of spooky vacuum trick to reduce the drag on an otherwise bulky draggy shape. http://www.wired.com/news/technology/0,1282,6168...
by cudabean
Tue Dec 23, 2003 5:01 am
Forum: Rocket forum
Topic: A christmas present from me to you guys
Replies: 8
Views: 5939

Hmmm, never mind. Something on my end, it turns out.

cudabean
by cudabean
Mon Dec 22, 2003 11:02 pm
Forum: Rocket forum
Topic: A christmas present from me to you guys
Replies: 8
Views: 5939

There may be a problem with the last rar file (part 5): RAR 3.30 beta 4 Copyright (c) 1993-2003 Eugene Roshal 20 Dec 2003 Shareware version Type RAR -? for help Extracting from leroy_rocket_book[1].part1.rar Extracting Leroy_Rocket_Book.pdf Extracting from leroy_rocket_book[1].part2.rar ... Leroy_Ro...
by cudabean
Sun Dec 21, 2003 11:13 pm
Forum: Off topic forum
Topic: Need some electric-rc advice
Replies: 3
Views: 3354

I have heard that the Wingo is a pretty stable platform and is easy to fly.
http://www.hobby-lobby.com/hlwingo.htm
They are popular for camera work (electronic camera still photos).
http://www.hobby-lobby.com/wingophoto.htm

cudabean
by cudabean
Tue Dec 16, 2003 6:12 pm
Forum: Valved pulsejet forum
Topic: 3 years waiting, my Bailey jet engine finally arrives!
Replies: 35
Views: 30314

Did you notice the tailpipe isn't a straight tube? It necks down a bit at the front where it meets the back of the combustion chamber cone. Not sure how he came up with that. Interesting. BTW, I got four of them! I've had the pleasure of visiting Earl Bayley at his shop a couple of times. He pointe...
by cudabean
Mon Dec 15, 2003 5:09 am
Forum: Valveless pulsejet forum
Topic: Kazoo engine
Replies: 56
Views: 36118

It would be a complication to put lead in, not to mention the toxicity issues of dealing with that metal. What about other solutions such as packing sand in, and squeezing a little, shift the sand, squeeze some more, etc. This might work as well when bending it into a U. Also, as far as the squashed...
by cudabean
Fri Dec 12, 2003 5:25 am
Forum: Gas turbine forum
Topic: turbine jet design calculations
Replies: 5
Views: 5556

Another thing: The engine you describe is mostly identical to the Kamps engine designed by Thomas Kamps. His design is available in a book, which is quite good, by the way. The main difference between your description and his is he used a single anular combustor. Kamps describes combustors, how they...
by cudabean
Fri Dec 12, 2003 5:12 am
Forum: Gas turbine forum
Topic: turbine jet design calculations
Replies: 5
Views: 5556

First, clear your weekend schedule
Second, go to this site:
http://naca.larc.nasa.gov/
Third, enter 'turbine' for the search criteria
Fourth, start downloading. They are PDFs. There are hundreds. Some better than others, but it's mostly good info.

cudabean
by cudabean
Wed Dec 10, 2003 6:06 pm
Forum: Off topic forum
Topic: microsoft sucks
Replies: 18
Views: 10624

People keep saying how great linux is. Well, I believe differently. In the space of sixty, I watched my friend break linux and have to fix things about five times. Maybe they work just fine if you're leaving them -alone-, letting them run whatever software you've managed to install, but try to tink...
by cudabean
Sun Nov 23, 2003 11:32 pm
Forum: Valveless pulsejet forum
Topic: Jam Jar Turbine
Replies: 15
Views: 12814

Ah, yes. That makes sense. The standard jam jar model is impractical for transportation applications because it relies on gravity to pool the fuel, but with the centrifugal action of your refinement in the design, it opens up new possibilities that could well include making things move. Fuel deliver...
by cudabean
Sun Nov 23, 2003 5:27 pm
Forum: Valveless pulsejet forum
Topic: Jam Jar Turbine
Replies: 15
Views: 12814

I think I understand it, but maybe not. Is the combustion taking place in the ring? But it's pulsating combustion, right? If thought of a way in which this could be modified into a simple turbojet: devise an intake near the hub. Place radial diffusers to help accellerate the intake air towards the o...
by cudabean
Sun Nov 23, 2003 5:08 pm
Forum: Tools and Construction
Topic: Fluidic Circuits for use in BCVP?
Replies: 2
Views: 3043

How would this improve on placing a turbulator in the region where you want to encourage flow separation?

cudabean
by cudabean
Sun Nov 23, 2003 4:34 pm
Forum: Gas turbine forum
Topic: Turbine design for the complete idiot
Replies: 11
Views: 9618

I went to the NACA site and downloaded a bunch of PDFs (99). One question I have is is the state of the turbine builders art all based on 1947-1959 technology? This will keep me busy for a while. What I'm interested in doing is developing an resonably efficient engine for homebuilt aircraft. A frien...
by cudabean
Sat Nov 22, 2003 7:06 am
Forum: Gas turbine forum
Topic: Turbine design for the complete idiot
Replies: 11
Views: 9618

Turbine design for the complete idiot

How does one go about learning to design gas turbines? I.e. compressors and turbines including fan jets? Looking mainly for books that were helpful. Any hints on the recommended progression? Can you design something on paper that would have a reasonable chance of being succesful at developing an eff...
by cudabean
Fri Nov 21, 2003 10:10 pm
Forum: Valveless pulsejet forum
Topic: r.b pelteire.question
Replies: 53
Views: 39853

What you are looking for is in this reference by our own Bruno Ogorelec: http://www.pulse-jets.com/download/puls ... /bcvpe.pdf, Page 6.

cudabean