But adding 1600 lbs plus weight of electric motors to the weight of a space craft, seems like a last resort option.
Nothing else worked?
Well, from the information I gathered from the previous article, the issue is with the solid rocket booster. It has a phenomenon known by rocket scientist as pogo.
In a liquid fueled rocket, pogo can be managed by damping the fuel supply. You can't do that when the fuel is solid. They basically had the option of putting a big tuned mass damper on it, or scrapping the single solid rocket engine for either a liquid one, or a hybrid of the two. The other two options would warrent a big "I told you so" from the DIRECT team.
No, they are dampening the vibrations because vibrations from SRBs are too unpredictable to be canceled out in the way you describe.
A) Then why do they need electric motors?
B) Tuned mass dampers (what you are describing) work much better if you know the frequency you are trying to dampen.
Perhaps what they are using aren't traditional electric motors, but more like Magneto rheological dampers or some other electric damper. That would make much more sense.
Who is going to write these open source textbooks?
Only one person has to take the initiative. After that, the community will make any corrections or updates necessary. That's the beauty of open source.
Back in my early days of using 64-bit Linux I had this issue. The quickest workaround (but not permanent) is to open a short Youtube video in one tab, and pause it. Then you can open the Youtube video you planned to watch in another tab and it won't crash.
It may or may not be cost effective. That's not why they do it. They do it because they are tinkerers, and if they weren't building electric cars, they would be building jet powered go carts. They money saved is just offsets the cost of their hobby.
Eventually all biofuels (including old frying oil) will be subject to fuel taxes and they want to be sure that it all flows through "legitimate businesses" that they can compell to collect the taxes for them.
You only remember the good times. Genesis and Dreamcast were great, and ahead of their time. The stuff in between was horrible.
Sega was like that crazy friend that would convince you to go out and blow all your money on strippers and booze. You would wake up the next morning with nothing to show for it except a splitting headache.
Sega went to rehab. The world is a better place because of it.
It went downhill(in the US at least) with their release of the Sega CD [wikipedia.org] and other crappy genesis add-ons as well as the ill-fated Saturn which were expensive with not much noticeable difference between the original Genesis games.
It seemed like Sega had made it their corporate goal to launch a device and discontinue support for it two months later. Sega's whole fan base became alienated by shelling out massive amounts of cash for bricked hardware. It seemed like every few months there was new hardware to buy.
All they had to do was take their time and develop a really good platform. By the time Dreamcast came around, it was too late.
Your scope is too narrow. Think of the big picture.
Step 1) Get FISA bill through Congress.
Step 2) Recruit massive amount of computer nerds through phony cyber command.
Step 3) ??? (this is the scary part)
My head hurts. I think I better loosen my tinfoil hat.
That makes way more sense now. Taking it a step further: Rebooting the VM doesn't check the license. It only checks it if you do a complete shutdown and then try to start it again.
Slashdot Mirror
But adding 1600 lbs plus weight of electric motors to the weight of a space craft, seems like a last resort option.
Nothing else worked?
Well, from the information I gathered from the previous article, the issue is with the solid rocket booster. It has a phenomenon known by rocket scientist as pogo.
In a liquid fueled rocket, pogo can be managed by damping the fuel supply. You can't do that when the fuel is solid. They basically had the option of putting a big tuned mass damper on it, or scrapping the single solid rocket engine for either a liquid one, or a hybrid of the two. The other two options would warrent a big "I told you so" from the DIRECT team.
No, they are dampening the vibrations because vibrations from SRBs are too unpredictable to be canceled out in the way you describe.
A) Then why do they need electric motors?
B) Tuned mass dampers (what you are describing) work much better if you know the frequency you are trying to dampen.
Perhaps what they are using aren't traditional electric motors, but more like Magneto rheological dampers or some other electric damper. That would make much more sense.
Here's a picture of it.
Sounds like they aren't planning on absorbing the vibrations from the engines, but canceling them with man made ones.
Maybe it's because I use 64-bit, or have a shared memory video card. But my system requires about 600MB without running any programs.
Note: I don't count using swap as good performance.
Of course, Boy George also gives me the creeps.
Note: I didn't post a link to Wikipedia out of fear of a picture. [shudder]
What about the bear from this commercial. It always creeped me out, and I never knew why.
If I had mod points, I don't know if I would mod that funny or troll.
Who is going to write these open source textbooks?
Only one person has to take the initiative. After that, the community will make any corrections or updates necessary. That's the beauty of open source.
Nice analogy, but now the whole discussion will be talking about Linux instead of open source textbooks.
I posted a better article from Time Magazine a few weeks back.
Of course, it was rejected...
I hope it comes with Xubuntu with specs like that. Get the upgrade to 1024 MB if your going to run Gnome.
Now I just have to contain myself until Friday.
because I didn't know Carmen Electra recorded any music, let alone sued Bob Barker for copyright infringement.
[/sarcasm]
Back in my early days of using 64-bit Linux I had this issue. The quickest workaround (but not permanent) is to open a short Youtube video in one tab, and pause it. Then you can open the Youtube video you planned to watch in another tab and it won't crash.
You must have some crazy hardware. Everything is just a "sudo apt-get install" away from working on my 64-bit Hardy machine.
I discovered that the best public toilet in the world, is the one in the Great Court, below the old reading room, at the British Museum, London, UK.
How do I mod down an entire article?
Thanks,
Thelasko
P.S. Worst article ever!
It may or may not be cost effective. That's not why they do it. They do it because they are tinkerers, and if they weren't building electric cars, they would be building jet powered go carts. They money saved is just offsets the cost of their hobby.
Eventually all biofuels (including old frying oil) will be subject to fuel taxes and they want to be sure that it all flows through "legitimate businesses" that they can compell to collect the taxes for them.
What do you mean "eventually?"
What color is the sky on your world?
Usually Magenta, but it's dusk here so it's blue. Why do you ask?
You only remember the good times. Genesis and Dreamcast were great, and ahead of their time. The stuff in between was horrible.
Sega was like that crazy friend that would convince you to go out and blow all your money on strippers and booze. You would wake up the next morning with nothing to show for it except a splitting headache.
Sega went to rehab. The world is a better place because of it.
It went downhill(in the US at least) with their release of the Sega CD [wikipedia.org] and other crappy genesis add-ons as well as the ill-fated Saturn which were expensive with not much noticeable difference between the original Genesis games.
It seemed like Sega had made it their corporate goal to launch a device and discontinue support for it two months later. Sega's whole fan base became alienated by shelling out massive amounts of cash for bricked hardware. It seemed like every few months there was new hardware to buy. All they had to do was take their time and develop a really good platform. By the time Dreamcast came around, it was too late.
Your scope is too narrow. Think of the big picture.
Step 1) Get FISA bill through Congress.
Step 2) Recruit massive amount of computer nerds through phony cyber command.
Step 3) ??? (this is the scary part)
My head hurts. I think I better loosen my tinfoil hat.
Rebooting a VM doesn't power down the VM.
That makes way more sense now. Taking it a step further: Rebooting the VM doesn't check the license. It only checks it if you do a complete shutdown and then try to start it again.
It will be 3am in New Zealand in a few minutes. We should find out then.