Nojay

Nojay

  • Commented on Bread and Circuses (circumlunar version)
    Fuel costs $5000 a kilo to orbit. It costs $2500 per kilo to half-way to orbit etc. etc. Fuel is mass on the pad that isn't payload into orbit but most of it has to be accelerated to a significant...
  • Commented on Excuses
    Oh God, not "in-wheel" motors for electric cars again... Car engineers have spent the last hundred years trying to lighten car wheels, not make them heavier because every extra gram is something they have to uprate the suspension system to...
  • Commented on Bread and Circuses (circumlunar version)
    So what if they take 3 times as long to get to 10,000 feet. Rocket engineers don't think that's a good idea. Spending more time to get to altitude and orbit means burning more fuel to fight the 9.86...
  • Commented on Excuses
    I'd like to see a breakdown of the number of "long-stay" prisoners versus the ones serving short sentences of a few months in current incarceration figures. I also wonder what has been the effect of improved forensics, surveillance cameras etc....
  • Commented on Excuses
    Having a respected university of international caliber (Emory U in Atlanta Georgia) So what's Georgia Tech then, cat food?...
  • Commented on Excuses
    it has become significantly harder to find a bargain second hand car in the UK for under 500 quid. I've also noticed that due to the change in the tax regulations, there are fewer older cars sold with current MOT,...
  • Commented on Excuses
    Different cheap car, the £70 one was a Fiat 500 tinybox (with a 1 litre "Fire" engine) that had an MOT and road tax off the lot and cost pennies to insure TPFT. It had a dodgy clutch mechanism that...
  • Commented on Excuses
    The most I've ever paid for a vehicle is a thousand quid and I only paid that because I needed a vehicle (a van) in a hurry. The least I've ever paid, 70 quid I think for a car in...
  • Commented on Bread and Circuses (circumlunar version)
    Nojay disparages your undemocratic democracy but ours isn't really any better. Most people are effectively disenfranchised because most constituencies are "safe seats", consistently returning a large majority for one particular party time after time regardless of changing conditions. That's because...
  • Commented on Bread and Circuses (circumlunar version)
    Sucks to have a 19th century democratic system. I feel for ya. I did a quick count recently -- it turns out that 52% of the US Senate is elected by 18% of the American population in the 26 least...
  • Commented on Excuses
    Electric vehicles don't imply "carbon-free" as the generation of electricity to charge batteries will remain a major consumer of fossil carbon energy for the next fifty years at least with the exhaust CO2 being dumped into the atmosphere....
  • Commented on Bread and Circuses (circumlunar version)
    The US fired off over a hundred nuclear weapons aboveground in a small area of the Nevada desert over a period of less than twenty years (1945 to 1962). They didn't evacuate anyone downwind of the test sites. The effects...
  • Commented on A bright and shiny hell
    The Catalonian separatists went ahead with their referendum against the orders of the national government in a very un-transparent manner. I dont know who got to vote and who didn't -- were residents in the area not originally from Catalonia...
  • Commented on A bright and shiny hell
    The conclusion remains the same: not only is the second amendment obsolete, but it has been so for most of the time of its existence. So why is it still there? It's still there because for some reason it ended...
  • Commented on A bright and shiny hell
    I get the impression that Spain is still getting over their civil war and rule by Franco. And to some degree the hangover of the Moorish conquest. The Spanish central government doesn't want a repeat of the Basque separatist movement...
  • Commented on A bright and shiny hell
    I see a lot of mentions here and there that American police officers are often hired using a preference system prioritising military veteran candidates. In sensible countries candidate police officers are typically young people from high school or University who...
  • Commented on A bright and shiny hell
    One of the Far-eastern airlines that has personal suites aboard their A380s has drop-down title menu on their Website. It includes "King"....
  • Commented on Bread and Circuses (circumlunar version)
    We've bought back ~300kg of moon rock, and found another ~200kg in lunar-origin meteorites on earth. The composition of the moon isn't a complete mystery, skippy. And that's enough to determine the best place to put down a refinery to...
  • Commented on Bread and Circuses (circumlunar version)
    I'm going to go out on a limb here and suggest that bringing stuff back from the moon is going to cost at least two orders of magnitude less than bringing stuff back from saturn. Definitely. You do have the...
  • Commented on Bread and Circuses (circumlunar version)
    We are certain there is ice in Saturn's rings. The case for recoverable Lunar ice is somewhat more dubious, same with the Martian moons. I'm all for landers and probes going to those places and looking for ice and it...
  • Commented on A bright and shiny hell
    Lots of exceptions. Hoover deployed tanks during protest marches in Washington during the depression, for example. It's just there's this "Posse Comitatus" rule the US has which folks think makes military action within their borders moot while the actual police...
  • Commented on A bright and shiny hell
    the US keeps the military firmly firewalled away from domestic police issues, Other than the large numbers of US police officers who are ex-military or active National Guard reserve or train regularly with the US military to use military-grade weaponry...
  • Commented on Bread and Circuses (circumlunar version)
    A quick one-source check on the Nets suggests xenon costs about $1200 per kilo. Argon is cheap, say $12 per kilo. SpaceX bills at about $5000 per kilo into orbit (but that includes the mass of the vehicle delivered into...
  • Commented on Bread and Circuses (circumlunar version)
    How are you going to power your ion drive? You're going to need a nuclear reactor. The water-ice tankers from Saturn are propelled by LOX/LH2 motors using cryogenic gases cracked from water-ice in Saturn orbit using very large solar arrays,...
  • Commented on Bread and Circuses (circumlunar version)
    Ion engines tend to use xenon because it performs a bit better than the cheaper alternative, argon (Xenon produces less Isp oddly but it takes more energy per Newton of thrust than argon due to higher ionisation energy). Since it...
  • Commented on Bread and Circuses (circumlunar version)
    I did say right at the beginning that this sort of endeavour would take a lot of time and a lot of money before the first tanker of water-ice arrives in Earth orbit from Saturn, decades and trillions of dollars....
  • Commented on Bread and Circuses (circumlunar version)
    The problem with taking off from Earth is that the thrust has to be more than 1g since the vehicle has to reach orbital velocity before the fuel runs out. Getting out of Saturn's rings can be done with a...
  • Commented on Bread and Circuses (circumlunar version)
    There is a major bootstrap operation that is probably essential for serious space travel to be a realistic proposition but unfortunately it requires a lot of investment and a very long period before it starts making a profit. That is...
  • Commented on Bread and Circuses (circumlunar version)
    Deep space fuels can be kept liquid with a few watts of electrical heating in the tanks assuming solar input is insufficient. What puzzles me, although I assume Great Minds have already solved this problem is that I understand Musk's...
  • Commented on Bread and Circuses (circumlunar version)
    The smarter scientists working on fluorine used lab assistants. Lots of lab assistants....
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