while I'm not sure why they thought it had any chance of surviving
I'd be very surprised if they thought it would survive.
2312 posts • joined 19 Jun 2009
I'm confused about the article's distinction between overhead cranes used inside warehouses and factories, such as the one pictured in the article, which are operated by remote, and the "building site" (e.g. mobile or tower) cranes mentioned in the headline, which usually contain human operators.
I simply used an independent product comparison website, it really wasn't that onerous. You may also choose to use a trailing commission refund service to claw back the thousands of dollars the mortgage broker makes off you (or, if you don't use one, that the bank keeps for itself).
While it is easy to joke about internet funbux, a number of people have had their lives profoundly impacted by money lost on cryptocurrency investments, and if the markets were being manipulated illegally, whoever was behind it should be brought to justice.
Eh. I don't feel sorry for someone who loses his/her shirt at the roulette table, why should this be different?
And the casino industry is at least regulated...
Then there are the people who made huge capital gains in the 2017 tax year and then lost it all in 2018. That's going to be fun to explain to the tax man.
Two platitudes come to mind: 1) you can't con an honest man; and 2) play stupid games, win stupid prizes.
Blue Origin's effort that was successfully landed had a velocity an order of magnitude lower than that required to reach orbit - it touched the top of the atmosphere and came back down again.
And not even that! Its lateral velocity was pretty close to zero. "All" it needed was a thrust:weight greater than 1 and enough fuel to get up and back.
I thought stars cooked metals themselves, at least as far down Mr Medeleev's bedsheet as iron.
They do, however stellar nucleosynthesis depends very heavily on the mass of the star. This one is too light to do much more than slowly burn hydrogen to helium, so its metallicity today is probably very similar to its metallicity when it formed.
Clearly the Russians have a systematic quality assurance problem
So systematic that it caused a single failure.
Now if you'd mentioned the problem they had with defective gas generators being installed in RD-021x engines during 2015/16, which ultimately killed off the Proton rocket, you might have had a point. However, that was due to attempted cost-cutting, which is the kind of thing you expect to see in the west...
A hybrid combines (some of) the complexity and cost of a liquid rocket and (some of) the inflexibility of a solid rocket. Solid rockets are very powerful, simple and cheap, while liquid rockets are very controllable and have very much higher performance.
In the most common configuration of hybrid rocket, a solid fuel is burned with a liquid oxidiser. The flow rate (and hence burn rate) of the oxidiser is controlled by the oxidiser pump/valve, but the burn rate of the fuel is affected by the exposed surface area of the fuel grain, which is in turn dependent on how much of the fuel has already been consumed. If you attempt to throttle the engine by reducing the oxidiser flow, it runs increasingly rich and performance suffers. You can certainly turn them off if you need to, but they can't throttle nearly as well as liquid rockets.
This would be madness, as it's highly likely to exclude all other road users (motorcycles, bikes, horses, pedestrians, non-self driving cars, etc)
A lot of those are already forbidden on highways, so I'm not sure that's a great argument.
That depends very much on where you are. In India for example, if it moves (or you can imagine it moving,) sooner or later you'll see it on a highway.
Why the discrimination against narcissistic Gen-Xers and boomers? Most of them probably got it from their parents after all.
Given that the oldest of the "millennial" Gen-Ys are now in their mid 30s, why shouldn't some of them want a "business" oriented phone?
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