Recent content by boab

Patrick32 There is a book called "Model Steam Turbines-How to Design and Build Them", written by Harrison. It is a 126 page book written about a 100 years ago, and is "very well done". It contains all the formulas needed to design a turbine of just about any size, and some plans for several...

If you don't get what I was trying to say, that is okay. I wish you luck on the project. Boab

This is a bit outdated reply to the thread, but I thought that kandelabr had a good idea with using air to drive his ideal car. What I think was lost in the discussion was applying compressed air drive beyond its practical design limits, such as cost, range, size, etc. I've more than once...

"Sure, compared to coal, but you said environmentally 'safest'. I'd place nuclear and any of the the renewables (others) in front of hydro." Okay...if you want to split hairs, solar, wind and hydro. Or wind, solar and hydro. One thing "I sure as Hell would not agree", is that nuclear...

Originally Posted by boab The best, the cheapest, the safest environmentally is hydro. --------------------------------------------------------- No, overstated. http://en.wikipedia.org/wiki/Environ...ree_Gorges_Dam And although hydro is predictable, it is unreliable due to flow variation...

I think the original concept of this thread was "how you" would fix the U.S. energy crises", and was not intended to be some political energy rag site that abounds everywhere, while the problem(s) continue. I my view, political interference into some issue usually occurs to cloud and issue, and...

An interesting endeavor. I, not being a math type either, can't help you out on the formula your looking for. However I know something about boilers, and the suggested improvements that have been made are good ones. Especially about insulating anything not impinged by direct radiation from...

Astronuc: I thank you for the very informative reply, to say the least. As the old saying goes, "Ask an you shall receive!" All the information and references you provided will keep me busy for some time. Very good material, right along with what I needed. Again my thanks for the trouble. boab

When hydrogen and oxygen burn they form steam, or H2O. I was thinking of quick and easy way to make steam would be by burning H2 gas and "air" in a simple rocket engine type burner at the pressure I needed the steam. Disregarding that the resulting flame is about at the top of the list for...

I'm not sure if this subject is still active, but I appreciated the information as it was "exactly" what I was looking for. Kground, I've looked and looked for small turbines, that do a reasonable amount of work, and found zip. Your site recommendation was right on target. Appreciate that...

Thanks PF MENTOR for the 3 references, 2 of which were very good. Actually I now see part of your argument, and yet I'm still curious as to how bad, bad is in relation to other to the other aspects I see as advantages. I have a large irrigation canal in my backyard, and as the weather warms...

PF MENTOR, thanks for the reply. I recall that one of the advantages of the WWII Spitfire fighter was its elliptical wing because it gradually stalled. While the ME-109 and FW-190 stalled suddenly if over controlled in a high G turn for example, and became instant victims due to the Spitfire...

For some time I've been thinking of making a round disk shaped model aircraft that would appear to have low drag, maximum internal carrying space, and maximum load carrying ability. As you can guess, there is little available on such a design, other than the Pancake, built at the end of WWII...

Well I thank you very much for the quick reply, and the effort! You have saved the day, and advanced the project. Cliff I used to be Cliff, now its "boab: as something got lost in my previous registration.

I'm having a problem finding and equation that will give me the tensile stress acting on a spinning ring, like the rim of a flywheel, that is trying to "pull itself apart". The ring has no spokes or disc, but is just a ring spinning on its axis. I need to know how fast the ring can spin...