can you not otherwise impart enough heat to flash boil the water? Why not a big metallic thermal load, made out of recycled popcans?
I believe the trick here is that because you're injecting the "fuel" (liquid water) and injecting the heat source you are able to very precisely control the timing of the engine as well as control the steam's wave front. If you had a static heat source inside the engine there's not only the question of how you deliver heat to that, but also how you control triggering of the phase change.
Also separating oil and water is easy, seeing as they don't actually mix.
The oil is assuredly atomized to increase surface area and heat transfer, seeing as the timing of such an engine depends on precise (and rapid) water phase change. Much like a diesel engine you're relying on very precise injection timing and predictably fast burning/expansion.
A oil/water mixture composed of such tiny droplets is not trivial to separate.
Separating oil and water which have been mixed at such a fine level doesn't seem the easiest. While I know it can be done, can it be done in such a manner to maintain any of the heat energy which remains? Or does one just accept that energy as lost?
The question is, why should someone with low income but fully owned property NOT be allowed to live in it?
Because real estate is special. All real estate is owned by individuals through patent by the government. The point of real estate is to benefit society as a whole through development and wealth creation. Property taxes are a purposeful disincentive on "sitting" on a piece of valuable property.
Your vendor is likely confusing you (and perhaps themselves).
GPS horizontal positioning does not require a very precise model of the earth.
GPS vertical positioning does not require a very precise model of the earth.
The gotcha there is that GPS works in ellipsoidal heights, NOT elevation. The ellipsoid is a simplified model of the earth. Elevation is height above mean sea level if the sea reached where you are. The elevation of any point measured by GPS is a combination of the ellipsoidal height and a gravity map (if there were no land, no wind, no tides the sea would still be uneven due to uneven distribution of gravity potential) called a geoid model.
As for lock and initialization times - I routinely profile roads, in traffic, and have no trouble maintaining initialization. That and a Trimble R8 GNSS (R8 model III) can initialize FAR faster than 20 seconds.
Carrier tracking does not require a very precise model of the earth. Real Time Kinnematic GPS has been done for well over a decade with rather sane processing requirements. It also isn't unstable. So long as the L1 and L2 signal of five satellites are tracked one can initialize on the fly, and you only need to track four continuously to maintain said initialization.
Like differential (a code-base correction) kinnematic requires a base receiver and a rover receiver. They can either be in real time contact or the results can be post-processed. Differential and kinnematic both work by estimating the ionospheric delays, the difference is between tracking the long-period time code or tracking the short-period (19cm) carrier wave.
The problem isn't the GPS system. The problem is John Deere is trying to use the system at an accuracy (100% availability at 1m) greater than the specified [civilian] performance levels (95% availability at 7m).
While I can't speak as to the John Deere system in particular, most the Ag navigation systems are using WAAS on the low end and VRS RTK subscription systems on the high end.
Here in Ohio ODOT offers a reduced-fee reduced-accuracy VRS option for farmers, who don't need the sub-cm service.
I don't want to believe the Iranians have a GPS spoofing system so advanced it can migrate a GPS-initialized inertial system from a good solution to a spoofed solution.
I, therefore, rather suspect they jammed GPS long enough for the bird's INS to lose initialization, and then introduced a spoofed solution. I call this an implementation blunder because if this form of attack had been predicted one would respond in a "safe" manner to loss of GPS.
Question, though, is where was their spoofing equipment? Off-the-shelf GPS antennas from Trimble have quite good radio-absorbing ground planes. This is used to prevent GPS multipath when working near the ground, but would be quite effective at rejecting terrestrial transmission of false GPS signals. Does this mean Iran had one or more airplanes flying over the drone? Interesting, interesting.
Most likely you cleared album art (as the poster above mentioned) or your tagger was set to remove padding.
With ID3 tags residing at the start of the file it is common to pad the tags with blank space so that future (longer) edits don't necessitate the rewriting of the entire file. Too Many shitty taggers remove padding by default.
It's in groupon's interest to not let the client do that. They get vast sums of money from these "deals" and they know the system doesn't do the small business any good, because the couponers are pretty much all piss taking free loaders.
Not only does Groupon allow businesses to set a limit, it very clearly is in Groupon's best interest to do so. If Groupon partners overextend themselves and deliver shitty service nobody will use Groupon.
One way or another you're going to have to get the drones/station to the satellites. You're going to have to have *something* pull up next to the satellite and either drag it into a reclamation bay or have the whole reprocessing unit go up right next to it
Except that moving the birds from their widely differing orbits is a major expense.
I don't think we could do it until we have electrically-powered engines that can be recharged with solar power and a rather large, permanently-manned space station.
Ion drives exist. But like all things in life there is a tradeoff. Engines which don't hurl much mass don't produce much thrust. Engines which hurl lots of mass require lots of propellent, be it electrically accelerated propellant or chemically accelerated propellant.
Slashdot Mirror
Ok, so we've isolated the compound. Why do we need the Pandas now?
I believe the trick here is that because you're injecting the "fuel" (liquid water) and injecting the heat source you are able to very precisely control the timing of the engine as well as control the steam's wave front. If you had a static heat source inside the engine there's not only the question of how you deliver heat to that, but also how you control triggering of the phase change.
The oil is assuredly atomized to increase surface area and heat transfer, seeing as the timing of such an engine depends on precise (and rapid) water phase change. Much like a diesel engine you're relying on very precise injection timing and predictably fast burning/expansion.
A oil/water mixture composed of such tiny droplets is not trivial to separate.
Separating oil and water which have been mixed at such a fine level doesn't seem the easiest. While I know it can be done, can it be done in such a manner to maintain any of the heat energy which remains? Or does one just accept that energy as lost?
What part of the quants invading sports and demonstrating that brains can win over brawn in the physical arena isn't news for nerds?
Require? No. Able to use? Yes.
That's because the original X-box is about the slowest hardware anyone runs XBMC on.
XBMC does 1080 just fine.
The drivers for hardware decoding on the Apple TV2 are very good. 1080p (downscaled) and 720p play perfectly with XBMC on a jailbroken ATV2.
That is assuming they are encoded with x/h264. MPEG4 ASP plays fine SD but only marginal HD, and that's because the CPU is slow.
Because real estate is special. All real estate is owned by individuals through patent by the government. The point of real estate is to benefit society as a whole through development and wealth creation. Property taxes are a purposeful disincentive on "sitting" on a piece of valuable property.
Because nobody who has a Zen has stepped up.
AMS gave datasheets. http://www.rockbox.org/wiki/AustriaMicrosystems
Sandisk gave dev boards and NO docs.
Nobody else gave squat.
To be pedantic WAAS is a differential system.
And to be overly pedantic for the GP, WAAS specifications don't meet the 1m/24/7 spec, but in practice it is sub meter 95% of the time.
Your vendor is likely confusing you (and perhaps themselves).
GPS horizontal positioning does not require a very precise model of the earth.
GPS vertical positioning does not require a very precise model of the earth.
The gotcha there is that GPS works in ellipsoidal heights, NOT elevation. The ellipsoid is a simplified model of the earth. Elevation is height above mean sea level if the sea reached where you are. The elevation of any point measured by GPS is a combination of the ellipsoidal height and a gravity map (if there were no land, no wind, no tides the sea would still be uneven due to uneven distribution of gravity potential) called a geoid model.
As for lock and initialization times - I routinely profile roads, in traffic, and have no trouble maintaining initialization. That and a Trimble R8 GNSS (R8 model III) can initialize FAR faster than 20 seconds.
Close.
Carrier tracking does not require a very precise model of the earth. Real Time Kinnematic GPS has been done for well over a decade with rather sane processing requirements. It also isn't unstable. So long as the L1 and L2 signal of five satellites are tracked one can initialize on the fly, and you only need to track four continuously to maintain said initialization.
Like differential (a code-base correction) kinnematic requires a base receiver and a rover receiver. They can either be in real time contact or the results can be post-processed. Differential and kinnematic both work by estimating the ionospheric delays, the difference is between tracking the long-period time code or tracking the short-period (19cm) carrier wave.
While I can't speak as to the John Deere system in particular, most the Ag navigation systems are using WAAS on the low end and VRS RTK subscription systems on the high end.
Here in Ohio ODOT offers a reduced-fee reduced-accuracy VRS option for farmers, who don't need the sub-cm service.
They either had an asset over the drone or the US totally fucked up in the GPS antenna design.
GPS signals aren't in the "directional" frequencies. If they spoofed from orbit we'd know.
Not saying we'd publish, but we'd know. We'd not only know they could, we'd know where in what orbit their spoofing bird was.
Is letting that cat out of the bag worth one drone?
I'm guessing it was an implementation blunder.
I don't want to believe the Iranians have a GPS spoofing system so advanced it can migrate a GPS-initialized inertial system from a good solution to a spoofed solution.
I, therefore, rather suspect they jammed GPS long enough for the bird's INS to lose initialization, and then introduced a spoofed solution. I call this an implementation blunder because if this form of attack had been predicted one would respond in a "safe" manner to loss of GPS.
Question, though, is where was their spoofing equipment? Off-the-shelf GPS antennas from Trimble have quite good radio-absorbing ground planes. This is used to prevent GPS multipath when working near the ground, but would be quite effective at rejecting terrestrial transmission of false GPS signals. Does this mean Iran had one or more airplanes flying over the drone? Interesting, interesting.
Chances of migration through rock? 0%.
Chances of migration past an improperly grouted drill pipe? 100%.
If everyone cemented their well properly there wouldn't be 1/100th the problem there is.
Most likely you cleared album art (as the poster above mentioned) or your tagger was set to remove padding.
With ID3 tags residing at the start of the file it is common to pad the tags with blank space so that future (longer) edits don't necessitate the rewriting of the entire file. Too Many shitty taggers remove padding by default.
You going to rectify that?
First the machines were better than me at math.
Now the machines are better than me at emotions?
Actually, take that back. The VAX I used in college was probably better at reading emotion than me.
Not only does Groupon allow businesses to set a limit, it very clearly is in Groupon's best interest to do so.
If Groupon partners overextend themselves and deliver shitty service nobody will use Groupon.
Except that moving the birds from their widely differing orbits is a major expense.
Ion drives exist. But like all things in life there is a tradeoff. Engines which don't hurl much mass don't produce much thrust. Engines which hurl lots of mass require lots of propellent, be it electrically accelerated propellant or chemically accelerated propellant.
That's not how pricing works.