When I saw "fuel cells" I *hoped* someone might have gone with sugars.
Sugars are everywhere in nature, they don't need fermentation and there are plants specifically bred to optimize their production.
Maybe one day.
16330 publicly visible posts • joined 10 Jun 2009
"I can't understand how anyone can support data which only exists because people are compelled by law (under threat of punishment by the state) to provide data to government, being used by commercial companies."
Because they see the "Easy money" aspect and not the extortion (by the State) that makes it possible.
The sort of people who test high for psychopathic traits.
All your data belong to us.
And until that's repealed it always will.
American Official in American Court >> Local privacy law.
Your options are a)Live with it and exist that anything in your MS run email system is available to the USG or b)Keep your email system in house.
The choice is yours.
"Elon Musk held a press conference on Friday 25th April where he accused (or pointed out, depending on how you look at it) ULA of ridiculously overcharging the DOD for their launches and how odd it was that the more-expensive service provider got the lions share of the next wave of launches. Expect fur to (gradually) fly over the next few month"
That was part of his anger. What really p**sed him off was the Air Force said Spacex could bid on EELV launches, which to that point they bought one at a time. Spacex set to work to demonstrate they are capable of launching USAF payloads below a certain mass and delta V requirement.
Then the USAF turned around and said they'd done a 36 core block buy from ULA and they were cutting the launches they think Spacex can do by 1/2.
The Secretary of the Air Force's behavior in this shall we say seemed "anomalous"?
"The not-so-hidden handout to new car dealers (I won't talk about the nuking of the "exisitng businesses" selling used cars) via the "cash for clunkers" program has already been forgotten, I see."
I presume that would be cash to buy a new car for you (very) old car rather than cash for a newer (and much better) 2nd user vehicle.
That little game has been very popular with car makers and politicians everywhere.
It must be in the top 10, right up there with the idea of "Collateralized Certificates of Deposit" where banks convinced suckers depositors that
9 parts s**t + 1 part Gold --> 10 parts Gold.
instead of 9 parts s**t.
I wonder if some (probably MBA) type will make their fortune by developing a proof that outsourcing can never deliver the scale of savings expected without grossly unrealistic starting assumptions (and what those assumptions are).
Probably not.
They'd be killed by all the other MBA types to protect the golden goose.
"The earth is extremely well protected against many kinds of radiation, including solar flares. The only way for a solar flare to do damage is to capture the energy with a big antenna array. Stringing wires up on poles spanning long distances will do nicely. But it's not like everything connected to those wires will instantly explode. The rise times are far slower than a lightening strike, and most equipment survives a nearby strike."
That's very comforting.
Small point.
How many satellites will be cooked by this? BTW GPS sats are just under the inner Van Allan radiation built so it's fair to say they are on the outer fringes of effective magnetic shielding for the Earth.
The trouble is that most algorithms that do that like big alphabets so a failure can skip the pattern string further along the main string.
But DNA is a 4 character alphabet unless you can assume that the pattern and main string will only align every 3 positions (IE a codon), giving you a 64 set alphabet. But I'm not sure if that assumption is always reliable as it's been a while since I read on this.
DNA is fascinating in that some amino acids have several codes. They are therefor "robust" in transcription errors (mutations), while others are fragile and any mistake knocks out a different amino acid.
The question is did this code assignment develop early and never change or has it also evolved? Likewise does the "fragility" of certain amino acids transcription have some sysetmatic effect on the compounds they form?
Sadly that's all above my pay grade.
"Why not lock us all up straight away just in case?"
To these people the answer is not "Because that would be a police state where due process and the right of trial by jury has gone down the gurgler."
It is "Because we don't have enough space (yet)."
But you're quite right surveillance without warrant --> imprisonment without trial --> world without crime.
Or at least as far as I can tell that's how these people reason.
Personally I think such thinking should be grounds for a stay in a room with mattress wallpaper.
To mandate the destruction of the metadata as well.
And you'd think the word that the EU Data Retention Directive is being binned had not reached the antipodes.
Let's be clear. This has (as usual) f**k all to do with "fighting crime" and is the usual data fetishist obsession with knowing (and storing) more data about everybody, because they can.
"Fighting crime" is just the excuse de jour.
"Except all the ones in major use are case sensitive (certainly anything with C as a root)."
Probably the biggest mistake Dennis Richie ever made.
So now instead of searching for members comments you have to remember their exact spelling as well.
I am so impressed.
Thank you for that blinding insight.
Most people know understand that computer generated random numbers are Pseudo random.
The challenge of creating software that generates good random number is tricky.*
* By good I mean that after you've recorded a very long stream of its output your best guess about its next output is literally no better than 50/50 either way.
"By the way, those bad boys use 386SX-16s with a separate math coprocessor. Zoom!"
AFAIK the ISS MDM's are split into "tiers."
Only the Tier 1 MDM's have processors.
The rest collect (multiplex) and distribute (demultiplex) data from the network, 1553b on the Shuttle, Ethernet (I think) on the ISS. The clue is in the name. It's just that NASA's ideas on architecture have changed over time and things have become "smart."
Embedded design rules apply. slow, known, stable, predictable >> Fast, high power, unreliable.
They get the job done.
"And for that matter, why isn't it being used for rail vehicles? I can remember "Booster Electric" locos in the 1950s which used big flywheels to store energy. They were later converted to electro-diesels."
Well there is at least one UK train line that uses a small LNG car engine to pump energy into a flywheel. The flywheel does the heavy lifting.
It's been running for years IIRC somewhere in the Midlands.
""Perhaps so yet in other countries with other religions some how the religion doesn't seem to get in the way of a technical education."
I think you conflate hatred of the West with a hatred of technology. If I were brutally honest I'd say the Palestinian / Israeli conflict is a land war that persists due to the massive funding of exterior parties for their own reasons. Large personal fortunes (either made or being spent) and efficient lobbying (to continue US involvement on the "right" side) make this a very difficult problem to resolve. Whenever a bad situation never gets any better follow the money.
Antisemitism has very little to do with this issue.
The effective theft of $13 T from the Iraqi economy might have upset a few Iraqis as well. "My enemies enemy is my friend" is a principal the US has long followed (like the CIA's support of Bin Laden back in the day. What could possibly go wrong with that plan?)
Hatred of the West didn't stop the Afghans down loading unencrypted drone video or building cost effective IED's.
You might like to look as the addresses of some of the papers in various scientific journals.
And of course there are the home countries of all those work visas coming into the US.
Japan, China, Singapore, S. Korea etc.
Not known for their Christianity, are they?
"The reason the space shuttle cost so much was because it was operationally crippled by requirements imposed on it by the US military. They wanted cross-range capability and cargo return abilities that the shuttle never actually ended up using."
You missed the big one.
The fixed $1Bn flat cost cap enforced by Tricky Dickies OMB under Caspar Weinberger.
That flushed every reasonable plan for a reusable space plane down the toilet of history, leaving the aircraft-with-monster-RATO-packs-and-drop-tank architecture we all got to know.
The real question of course is what were the impact velocities, roll rate and angle at sea level.
"Roll rate" is very important because it was the stage spinning on it's long axis that was causing the fuel to centrifuge away from the engine inlets, starving them of propellant on the last flight.
The other point is if the stage was at M1.1 at 8.5Km what was its trend?
If it was slowing down IE Drag > gravity force that's a good thing. Drag < gravity force --> stage accelerating. Not so good.
What really happens at this stage is collecting a rich crop of data, which seems to have been 100% successful.
"Joking apart, it does seem somewhat odd. When SpaceX first got going their aim seemed to be to have a very cheap way of manufacturing rockets, meaning that the rockets themselves could be disposable yet profitable. That was even reflected in their engine design."
No. The F1 was very much a "starter" vehicle to gain experience.
AFAIK Musk has always known reusability was the way to go and that means regenerative cooling.
"Visiting Fedex.com and attempting a blank logon in order to kick over to their SSL site, Netcraft reports the following: "The site offered the Heartbeat TLS extension prior to the Heartbleed disclosure, but is using a new certificate and no longer offers Heartbeat."
So it sounds like they've now addressed it, no?
"
RTFA.
Yet.
The appropriate example would be David Gerrolds series "The War Against the Chtorr."
Chlorophyll works for the wavelengths of our Sun.
There is no reason to doubt that a Chlorophyll like chemical would not evolve to harvest longer wavelength, lower energy photons.
You'd just better hope that the locals aren't eying us as we are eying them.
"Nice planet, bit of a vermin population (about 6 1/2 billion) but nothing that can't be taken care of."
"Good luck indeed! Go SpaceX! I've read somewhere that because Musk seem to be very good and choosing where to spend his money to make lots more money, he is expected to be the richest person on the planet in a few years time. Don't have link I'm afraid."
In America I think that would be Warren Buffet, who IIRC is estimated to be about $50Bn.
Musk has a ways to go.
"I'd rather have a hydrogen leak than some of the other propellants like hydrazine. At least it's effectively non-toxic (with a lower toxicity than oxygen) and disperses quickly, leak detection is probably a pain in the arse though."
True, although GHe is not actually a propellant.
"Are SpaceX using LHe to cool the LO2 tanks?"
No. Helium liquifies around 4K, 1/5 that of Hydrogen. Gaseous Helium is mostly used for tank pressurization (although O2 tanks can be pressurized by boiling some in a heat exchanger on the engine) and providing the driving force for activating valves.
"For me, that is the reason why hydrogen powered cars are perhaps a bit of a dead end. But maybe the problem can be solved somehow - we will see."
Actually the fact the compression or cooling of the H2 consumes maybe 3x the energy stored in the tank probably has more to do with it.
It didn't work.
IIRC The programme had been running since about 1963 and never got > 50% accuracy.
So what's changed?
Either the FBI work was way behind the SoA or someone had convinced the FBI they can do better.
Much better.
They make up graded alloy strips where one or more of the elements varies along the length.
The strip is then laid on top of what looks like a plate with holes in it. At this point I'd guess they put the whole lot in a furnace and connect it to a high pressure supply.
They then try to blow bubbles with the metal.
Biggest bubble seems to win.
BTW I suspect the problem with quantum chemical tests is 1 simulation will take hours and the effect is (I suspect) non linear, so extrapolation does not work.
So the bar for behaving like a right s**t is pretty high.
The chief spookocrat who was behind the Snoopers Charter had a degree in Theoretical Physics from Cambridge but I doubt this one will have even that level of technological awareness.
Process For Facial Recognition and store.