The temperature extremes experienced in spacecraft (the Antarctic and Artic here on Earth) are such that considerable thermal expansion and contraction occurs. Because materials have different thermal expansion coefficients, everything is expanding and contracting at different rates, leading to mechanical stress. Such stresses cause hardening of materials - rather than flexing with the stress as when they were new, they break, and there-in lies the problem. (Remember bending wire coat hangers until they break? Even after a few bends, you would have problems straightening the now hardened wire.)
The break can take many forms - a solder joint fails, a bearing seizes or breaks, a screw snaps, or a structural weld breaks. Each of these can result in a failure that renders the device inoperative.
The heaters (often common power resisters) limit the cold extremes, and allows some predictability as to when failures can begin. In electrical systems, such heaters are used when the electronics can not keep themselves warm through continuous operation, or the electronics are shut down (you do want them to come back up, don't you?)
In any case, power consumption tends to be fairly constant whatever the operating mode is.
The Quick Launch Toolbar launches any application not just IE applications.
Just drag the application icon to the QL toolbar. A copy of the link appears in the toolbar (the original link is not affected).
QL needs to be enabled in the "Task Bar and Start Menu Properties" by checking "Enable Quick Launch".
> depends on extremely efficient nitrogen removal and I've never been sure how you'd achieve that.
You don't remove the N2. Rather, you extract the H2O, CO2, and O2 for your burn cycle, and release the rest.
The gasses that condense out of air (from high temperature to low) are H2O, CO2, O2, N2. I don't think you have to worry about the other trace gasses that exist.
Mechanically, you compress raw air and move the resulting heat down the process. After separating out the various substances as liquids at various temperatures, you reheat the liquids back to gasses at their original temperatures (but this could be an optional step). Excess heat still remains - possibly, this can be used to preheat boiler feedwater or other purposes.
Sique (173459) writes> Luckily CO2 tends to react with Calcium, Sodium and Potassium minerals, and gives us different types of chalk.;)
Heat from the initial O2 extraction may be needed/used to form such chalks.
At the end of the burn cycle, you have ashes, chalks and H2O. H2O can be reused or released. The rest of the waste products are solids - very easily sequestered or used.
This strikes me as being a very useful research project. Lots of good data will come out of this. Whether or not it can be scaled up remains to be seen.
Only problem is that it actually affects people try to travel..... But if they want to do it in my name like I somehow want this, there is a problem. If they want to treat me like a criminal in my own country for trying to travel in it, I have a problem.
This could form the basis for a letter to your congress-critter. "The TSA is broken. Fix it or eliminate it."
> My buddy at work just got a MS in web design, and while he learned a lot he hasn't been promoted > or given more interesting assigments as a result. He would still probably say it was worth it, > though, since it probably increases his potential salary when he goes job hunting.
That may be so, but I suspect that he simply hasn't asked for a promotion or brought up the possibility of leaving for another company. I suspect most companies will just continue status quo unless something gives them a push. Otherwise, the employee must be happy where he's at....
Using "Mailwasher" downloaded for free from http://www.download.com/, I was able to reduce my daily spam load from about 120/day to practacally 0. It took about 3 weeks of adding to, and editing a blacklist of source email addresses every other day, and automatically sending back "unknown user" service messages to blacklisted addressed. (Aparently, spambots pay attention to these messages.)
The effects were noticable in a week, substantial at the end of the next week, and complete within a month. After that, I discontinued running MailWasher, and haven't received any spam since (several months).
I didn't lose any messages I wanted, but it killed all the spam.
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The break can take many forms - a solder joint fails, a bearing seizes or breaks, a screw snaps, or a structural weld breaks. Each of these can result in a failure that renders the device inoperative.
The heaters (often common power resisters) limit the cold extremes, and allows some predictability as to when failures can begin. In electrical systems, such heaters are used when the electronics can not keep themselves warm through continuous operation, or the electronics are shut down (you do want them to come back up, don't you?)
In any case, power consumption tends to be fairly constant whatever the operating mode is.
The Quick Launch Toolbar launches any application not just IE applications. Just drag the application icon to the QL toolbar. A copy of the link appears in the toolbar (the original link is not affected). QL needs to be enabled in the "Task Bar and Start Menu Properties" by checking "Enable Quick Launch".
You don't remove the N2. Rather, you extract the H2O, CO2, and O2 for your burn cycle, and release the rest.
The gasses that condense out of air (from high temperature to low) are H2O, CO2, O2, N2. I don't think you have to worry about the other trace gasses that exist.
Mechanically, you compress raw air and move the resulting heat down the process. After separating out the various substances as liquids at various temperatures, you reheat the liquids back to gasses at their original temperatures (but this could be an optional step). Excess heat still remains - possibly, this can be used to preheat boiler feedwater or other purposes.
Sique (173459) writes> Luckily CO2 tends to react with Calcium, Sodium and Potassium minerals, and gives us different types of chalk. ;)
Heat from the initial O2 extraction may be needed/used to form such chalks.
At the end of the burn cycle, you have ashes, chalks and H2O. H2O can be reused or released. The rest of the waste products are solids - very easily sequestered or used.
This strikes me as being a very useful research project. Lots of good data will come out of this. Whether or not it can be scaled up remains to be seen.
Only problem is that it actually affects people try to travel. .... But if they want to do it in my name like I somehow want this, there is a problem. If they want to treat me like a criminal in my own country for trying to travel in it, I have a problem.
This could form the basis for a letter to your congress-critter. "The TSA is broken. Fix it or eliminate it."
> Perhaps they need a new Chef Engineer.
Great Googlely Mooglely!
> or given more interesting assigments as a result. He would still probably say it was worth it,
> though, since it probably increases his potential salary when he goes job hunting.
That may be so, but I suspect that he simply hasn't asked for a promotion or brought up the possibility of leaving for another company. I suspect most companies will just continue status quo unless something gives them a push. Otherwise, the employee must be happy where he's at....
Resurrection and Chuck it and leg it.
Using "Mailwasher" downloaded for free from http://www.download.com/, I was able to reduce my daily spam load from about 120/day to practacally 0. It took about 3 weeks of adding to, and editing a blacklist of source email addresses every other day, and automatically sending back "unknown user" service messages to blacklisted addressed. (Aparently, spambots pay attention to these messages.)
The effects were noticable in a week, substantial at the end of the next week, and complete within a month. After that, I discontinued running MailWasher, and haven't received any spam since (several months).
I didn't lose any messages I wanted, but it killed all the spam.