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aliens2.jpg


Also;
[ame="http://www.youtube.com/watch?v=Dd-2dZMDAGw"]YouTube- Shattered Horizon "Escalation"[/ame]
 
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Holy ****! o_O More snow across Texas... in February... In December this area got its earliest snowfall in history. I wonder if snow today would mean the latest snowfall? Amazing though, snow has gone from coming every few decades, to a few years, to months??
 
Quick_Nick said:
Holy ****! o_O More snow across Texas... in February... In December this area got its earliest snowfall in history. I wonder if snow today would mean the latest snowfall? Amazing though, snow has gone from coming every few decades, to a few years, to months??
Click to expand...
Zero snow for Maine the whole month of February and most of January. But apparently, it's supposed to start snowing tomorrow and not stop for a few days or so...
 
Heck yeah space hippies, I wonder if they have any space acid?

or maybe that's a bad thing:

[ame="http://www.youtube.com/watch?v=-X69aDIFFsc&feature=related"]YouTube- Shatner On LSD: BACK TO THE SHIP!!![/ame]
 
Working from 1500 to 2300 tonight, then from 0600 to 1400... God, I'm going to be exhausted.
 
I'm so tired that I can't read correctly today. 3 meetings with customers and the last one in pub. I need a 3 day break but not until thursday.

May the :probe: will give me some energy.
 
So my roommate spots me plotting a lunar transfer...and kindly asks why I don't just aim the damn thing towards the moon and fire up the engines. I respond with the usual "only if you have some unrealistically high ISP" answer, to which he replies that "in space you don't need energy, you just need to give things a nudge". A long argument ensued, during which he also said that rocket engines work by pushing themselves against the vacuum of space, the earth's orbit is relatively round because the earth is relatively round too, asteroids basically have no orbit and move in weird and irregular trajectories (because of their irregular shape) and simply changing the distribution of mass within an object will change its orbit. When directed to Google, he said there's no need to because he knows physics.
May the probe have mercy on him....:suicide:
 
Cooked some over-easy eggs, peppered bacon, and sausage on my big teflon griddle, and am now enjoying a few cups of coffee.

Heck yeah.
 
Dambuster said:
Just out of interest, how do rocket engines work?
Click to expand...

By pushing against their own exhaust gases. :lol:

Really. You put some mass under high pressure into it, heat the mass and eject the resulting gases through a Laval nozzle, accelerating the gases. While accelerating the gases, the pressure of the gases pushes also against the walls of the engine, accelerating the rocket with opposing force (Actio = Reactio) How you get the mass to high pressure, or how you heat it, that is just details. Chemical rocket engines use usually liquid fuels, pump them to high pressure and burn them inside a gas generator for driving the pumps with the power of a turbine. And there are again many different options on HOW you can feed a gas generator, how you connect turbines and pumps, what flows through the turbines, and what you do with the exhaust of the gas generator. The liquid fuels are then run through some heat exchangers and then injected into the main combustion chamber, where they are burned and the resulting hot exhaust gases (conservation of mass = Injected mass is equal to the mass of the exhaust) are accelerated by the nozzle.
 
WooT

Finally finished this semester! Just finished all the exams yesterday.

I took;

  • OOA & Design
  • Principles of Information Systems Security
  • Web Interface Design
  • Economics
  • Intro to Databases with Oracle
For a total of 20 credit-hours. I believe I have completed 80 and have something like 48 left to go. Oh and maintaining a 3.9 :cool: Though I will be getting into those dumb humanities courses now...

After this BS, Ill go for my Master in engineering which I think will take about 6-18 months or so (provided I can do 21+ a semester)
 
Urwumpe said:
By pushing against their own exhaust gases. :lol:

Really. You put some mass under high pressure into it, heat the mass and eject the resulting gases through a Laval nozzle, accelerating the gases. While accelerating the gases, the pressure of the gases pushes also against the walls of the engine, accelerating the rocket with opposing force (Actio = Reactio) How you get the mass to high pressure, or how you heat it, that is just details. Chemical rocket engines use usually liquid fuels, pump them to high pressure and burn them inside a gas generator for driving the pumps with the power of a turbine. And there are again many different options on HOW you can feed a gas generator, how you connect turbines and pumps, what flows through the turbines, and what you do with the exhaust of the gas generator. The liquid fuels are then run through some heat exchangers and then injected into the main combustion chamber, where they are burned and the resulting hot exhaust gases (conservation of mass = Injected mass is equal to the mass of the exhaust) are accelerated by the nozzle.
Click to expand...

Thanks! I was confused because of something my physics teacher said, that the rockets fired their exhaust against the combustion chamber, which made absolutely no sense to me at the time, but now I see what she was trying to say!
 
I just saw 15 to 17 orange flickering lights come over my house 2 by 2 without a sound. They were all heading South at about the same speed. They appeared to be at anywhere between 2000-3000 feet in altitude. Any theories?
 
Those chinese hot air floaters with a burning medium at the bottom. They usually appear in packs, travel at the same speed, and flicker orange.
 
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