I think it is interesting, huge weight savings over a pressure fed with none of the high-speed parts of a turbopump. Flowmetrics wasn't the first to come up with the idea although they were the first to put it on a rocket and have patented several ideas relating to it. I'd like to see it running in a bigger concept than the SDSU rocket though. (Steve and Carl, faculty advisors for the projects work at Flowmetrics)
(They were pumping martinis at the Joint Propulsion Conference 2 years ago... very nice... and yummy)
NASA is paying for the research through a contract with ATK. XCOR is a subcontractor.
See, XCOR can't make money flying their rocket-planes around so they have to have government contracts to foot the bills. It was like this before the X-prize and will remain to be.
Now the X-prize itself and the X-cup? Yes, cool. But credit where credit is due. This is NASA research, not X-Prize stuff.
'risk' isn't quite what people are making it out to be. Risk is the fact that a methane engine hasn't been built and operated before. By building and operating a methane engine, and improving its design (making it regeneratively cooled, using cryogenic methane as a fuel, passing x-thousand lights without incident, etc) reduces its relative risk.
NASA uses a scale called Technology Readiness Levels (TRL) which you can read about if you like. Operating this device and documenting it can help raise the TRL of methane engines.
Additionally, it is a 'risk reduction' effort because it could be a replacement for the engine of the CEV which right now is (I think) kerosene+LOX. If that falls through for some reason (what, I don't know...) there is a second option on the table. Again, reducing risk.
And yes, according to Zubrin, we can manufacture methane on Mars where the CEV will be headed in 15-20 years, so an adaptation of this might be a retrofit to the CEV someday. (but please, be critical thinkers when you read Zubrin...)
So the methane-oxy engine development has less to do with politics, and more to do with the practical matters of meeting the targetted design goals.
No, it has more to do with the subcontract they have with ATK to do research for NASA LINK. This pays the bills while they play with their winged rocket-plane.
For comparison, the kerosine F-1 engines on the Saturn V produced 1.5 million lbf compared to the 7,500 lbf targetted by this engine.
They were also pumping a lot more fuel and oxidizer per second (much larger m_dot). This is a small engine mounted to the back of a trailer. You could (almost) wrap your hands around it. The F-1's chamber is quite a bit bigger.
Guilds will catch up. Remember, WoW was missing several endgame instances that were SUPPOSED to be there from day-1 (along with honor, battlegrounds, etc) and implemented later so guilds didn't have time to conquor them, as they were added later in time.
Everquest put out 2 expansions a year, roughly, after the first couple. And the raiding guilds keep up with it.
He benefits the world more in spending his time on his endowments than on wasting that time micromanaging his investments. Even if he had the time - or wasted the money to hire the legal help to assist him - to weed out the 'bad' companies from his portfolio there is no way to make everyone happy. Everyone has a different moral threshold. But what **is** beneficial to everyone is the endowments, and that is what the Gates' should be focusing on.
In 2001 there was a stock market crash if you didn't notice- investment is usually a bad idea when the economy goes south. In fact, the stock market in general is just a method to steal money from investors and give it to stock brokers and C-level executives.
The best time to buy is when the stocks are cheap - you get more for your money. And if it is such an investment, then why did mine get 14.5% last year? I'm just an engineer, I'm no stock broker... it doesn't take a genious to make money on the stock market. It is good for me and it is good for the business I invest in.
It was before relase 5 of DirectX or so when he had his criticisms but by DirectX 8 Carmack was saying he had reconsidered and that DirectX was worth looking into (partially due to him not liking 'contrived use of P-buffers' in OpenGL, partially due to the increase of maturity in DirectX, from what I've seen)
And yes, more recently he has gone on the books to advocate developing in DirectX to hit both Windows boxes and XBOX 360's.
While pitch, roll, and yaw are not axes but rather rotations about axes, a set of arbitrary axes can be set up to define these, not coincident with the X, Y, Z axes. These two sets of axes can be related by a 9x9 matrix. This is useful in engineering, relating frames (for example, between an aircraft and the ground, or the aircraft and a turboprop's rotor)
I've been in the beta for awhile and yea, the NDA has been lifted... my system is decent (NVidia 6800, AMD 4200+) and my FPS have been excellent the whole way through. The classes I have played have been interesting and there are some new concepts that I haven't seen implemented in other MMO's (like Diplomancy).
Also recall McQuaid's last big project, Everquest: the poster child for intentionally broken and incomplete content that somehow nonetheless was always "Working as intended."
As a hardcore Everquester of the last 6 years, I guess I'm not quite sure what was "intentionally broken" and "incomplete content that somehow nonetheless was always 'Working as intended.' "... yeah there were problems from time to time but nothing compared to WoW, for example. Perhaps you can elaborate. Personally, the fact that McQuaid has 'The Vison' (TM) (C) is the reason I'm so excited about it.
i
I use gvim at work for programming in C++ / FORTRAN. Syntax highlighting works great. No complaints. Keyboard shortcuts / regexp / scripting make life a breeze.:wq
16*40 = $640, more than the $500 32 gig hard drive that is proposed. So your solution is more expensive, per megabyte, on the flash partition. This has been done before (see: the iOpener computer). The reason why a true road warrior would not want to do this is because you are generally using flash in (1) low power and (2) high vibration environments where you don't want a hard drive, period.
RMS seems to think you can enumerate freedoms... he has the zero'th, first, second and third freedoms. www.gnu.org right there on the front page. Three strikes (plus a zero'th) and you, my trollish friend, are out.
H2O2 + a fuel. They are pretty secretive about what they do out on the ranch but that much is known from public filings. And no (to answer sibling post) this rocket isn't orbital although it may be the upper stage of an orbital craft (or just a technology testbed)
While I might have time at my computer at work, i don't have time availble while I'm in a meeting at work. Or while I'm walking the halls at work (I have two desks... it is a weird situation). And if I get intercepted by a "customer" for "a few minutes"... who knows what the real time is? I do, if i'm wearing my watch.
And I'm still taking grad classes. That should be self-explanatory.
I really like mine.
proper english is 'cites'. You cite papers and court cases, you visit sites like the Washington monument. And I have my sights set on dinner (hungry at the moment).
Slashdot Mirror
Someone I know refers to it a "cow-milker" :-P
I think it is interesting, huge weight savings over a pressure fed with none of the high-speed parts of a turbopump. Flowmetrics wasn't the first to come up with the idea although they were the first to put it on a rocket and have patented several ideas relating to it. I'd like to see it running in a bigger concept than the SDSU rocket though. (Steve and Carl, faculty advisors for the projects work at Flowmetrics)
(They were pumping martinis at the Joint Propulsion Conference 2 years ago... very nice... and yummy)
NASA is paying for the research through a contract with ATK. XCOR is a subcontractor.
See, XCOR can't make money flying their rocket-planes around so they have to have government contracts to foot the bills. It was like this before the X-prize and will remain to be.
Now the X-prize itself and the X-cup? Yes, cool. But credit where credit is due. This is NASA research, not X-Prize stuff.
'risk' isn't quite what people are making it out to be. Risk is the fact that a methane engine hasn't been built and operated before. By building and operating a methane engine, and improving its design (making it regeneratively cooled, using cryogenic methane as a fuel, passing x-thousand lights without incident, etc) reduces its relative risk.
NASA uses a scale called Technology Readiness Levels (TRL) which you can read about if you like. Operating this device and documenting it can help raise the TRL of methane engines.
Additionally, it is a 'risk reduction' effort because it could be a replacement for the engine of the CEV which right now is (I think) kerosene+LOX. If that falls through for some reason (what, I don't know...) there is a second option on the table. Again, reducing risk.
And yes, according to Zubrin, we can manufacture methane on Mars where the CEV will be headed in 15-20 years, so an adaptation of this might be a retrofit to the CEV someday. (but please, be critical thinkers when you read Zubrin...)
That is all.
So the methane-oxy engine development has less to do with politics, and more to do with the practical matters of meeting the targetted design goals.
No, it has more to do with the subcontract they have with ATK to do research for NASA LINK. This pays the bills while they play with their winged rocket-plane.
For comparison, the kerosine F-1 engines on the Saturn V produced 1.5 million lbf compared to the 7,500 lbf targetted by this engine.
They were also pumping a lot more fuel and oxidizer per second (much larger m_dot). This is a small engine mounted to the back of a trailer. You could (almost) wrap your hands around it. The F-1's chamber is quite a bit bigger.
Guilds will catch up. Remember, WoW was missing several endgame instances that were SUPPOSED to be there from day-1 (along with honor, battlegrounds, etc) and implemented later so guilds didn't have time to conquor them, as they were added later in time.
Everquest put out 2 expansions a year, roughly, after the first couple. And the raiding guilds keep up with it.
My wife kicked her habit too, sold her WoW account right before new years.
:P
Now, unfortunately, every friend I know still plays WoW so I have to hear about it all the time, but the house for the moment is WoW free
"They're not king alaskan but... they sure do feel big" -Carl, ATHF
He benefits the world more in spending his time on his endowments than on wasting that time micromanaging his investments. Even if he had the time - or wasted the money to hire the legal help to assist him - to weed out the 'bad' companies from his portfolio there is no way to make everyone happy. Everyone has a different moral threshold. But what **is** beneficial to everyone is the endowments, and that is what the Gates' should be focusing on.
;-)
is that a face I see on Mars?
In 2001 there was a stock market crash if you didn't notice- investment is usually a bad idea when the economy goes south. In fact, the stock market in general is just a method to steal money from investors and give it to stock brokers and C-level executives.
... it doesn't take a genious to make money on the stock market. It is good for me and it is good for the business I invest in.
The best time to buy is when the stocks are cheap - you get more for your money. And if it is such an investment, then why did mine get 14.5% last year? I'm just an engineer, I'm no stock broker
According to Gizmodo and Apple VP's:
...)
The OS isn't going to be "OS X for real." It's more like a pseudo-OS X and, like the iPod, it will not have a public API and open development.
Unlike the Pocket PC which has open API's for development by third party people (like you and me
Now you are talking about locking in your HARDWARE, which costs more than your software...
It was before relase 5 of DirectX or so when he had his criticisms but by DirectX 8 Carmack was saying he had reconsidered and that DirectX was worth looking into (partially due to him not liking 'contrived use of P-buffers' in OpenGL, partially due to the increase of maturity in DirectX, from what I've seen)
And yes, more recently he has gone on the books to advocate developing in DirectX to hit both Windows boxes and XBOX 360's.
While pitch, roll, and yaw are not axes but rather rotations about axes, a set of arbitrary axes can be set up to define these, not coincident with the X, Y, Z axes. These two sets of axes can be related by a 9x9 matrix. This is useful in engineering, relating frames (for example, between an aircraft and the ground, or the aircraft and a turboprop's rotor)
I've been in the beta for awhile and yea, the NDA has been lifted... my system is decent (NVidia 6800, AMD 4200+) and my FPS have been excellent the whole way through. The classes I have played have been interesting and there are some new concepts that I haven't seen implemented in other MMO's (like Diplomancy).
... yeah there were problems from time to time but nothing compared to WoW, for example. Perhaps you can elaborate. Personally, the fact that McQuaid has 'The Vison' (TM) (C) is the reason I'm so excited about it.
Also recall McQuaid's last big project, Everquest: the poster child for intentionally broken and incomplete content that somehow nonetheless was always "Working as intended."
As a hardcore Everquester of the last 6 years, I guess I'm not quite sure what was "intentionally broken" and "incomplete content that somehow nonetheless was always 'Working as intended.' "
i I use gvim at work for programming in C++ / FORTRAN. Syntax highlighting works great. No complaints. Keyboard shortcuts / regexp / scripting make life a breeze. :wq
Vanguard will be coming out first quarter 2007. Still in closed beta, open beta coming soon. Looks very promising ...
16*40 = $640, more than the $500 32 gig hard drive that is proposed. So your solution is more expensive, per megabyte, on the flash partition. This has been done before (see: the iOpener computer). The reason why a true road warrior would not want to do this is because you are generally using flash in (1) low power and (2) high vibration environments where you don't want a hard drive, period.
It is too small for a SSTO in and of itself. It is either just a testbed vehicle or a second stage. Most likely just a testbed (like Burt Rutan's SS1)
RMS seems to think you can enumerate freedoms ... he has the zero'th, first, second and third freedoms. www.gnu.org right there on the front page. Three strikes (plus a zero'th) and you, my trollish friend, are out.
Bezos hired some of the ex-DC-X people. Which explains the similarities.
H2O2 + a fuel. They are pretty secretive about what they do out on the ranch but that much is known from public filings. And no (to answer sibling post) this rocket isn't orbital although it may be the upper stage of an orbital craft (or just a technology testbed)
While I might have time at my computer at work, i don't have time availble while I'm in a meeting at work. Or while I'm walking the halls at work (I have two desks... it is a weird situation). And if I get intercepted by a "customer" for "a few minutes" ... who knows what the real time is? I do, if i'm wearing my watch.
And I'm still taking grad classes. That should be self-explanatory.
I really like mine.
proper english is 'cites'. You cite papers and court cases, you visit sites like the Washington monument. And I have my sights set on dinner (hungry at the moment).
Well that is the whole point of XML. Not needing the reader to just dig in and edit it by hand. Machine readable and human readable.