You know, that's completely unimportant. The important parts are that 1) Starship stage is under pressure when landing and 2) pressurization makes a thin-walled metal cylinder much stronger resisting buckling. Details of how Starship works and how pressurization is historically used to increase strength are just to support these two points. But if you already have these two points, you should admit that the argument "Starship can't land on legs because there's too big of a risk of buckling" has some counterarguments. And the overall decision isn't as clear as we'd like to have it.
Actually, it is very important. Autogenous pressurization has a much higher risk of pressurization loss than a system which uses inert gases, due to the potential for the ullage gases to mix with the liquid fuel and condense.
This is relevant when designing the landing system.
Yes. They were installed many decades ago and haven't been replaced because a) it would be extremely expensive to do so and b) there are additives which AIUI prevent or at least significantly reduce leaching.
I'd be shocked if the EPA's cost estimates turns out to even be within an order of magnitude off the actual cost. Maybe they're just measuring the cost to utilities for the parts not on private property.
> there are additives which AIUI prevent or at least significantly reduce leaching
Hard water (high in calcium and magnesium) can form a scale on the inside of copper pipes. In a way this acts as a protective layer, as the water doesn't actually come into contact with the copper.
In my high school, English class existed to teach you to do two things - read books and write essays. No other class cared about both things (individually or separately). Kids need to do both, so emphasizing one over the other does them a disservice. TFA talks about the problems that result when you starve the reading side, and this post suggests (I think) starving the writing side (writing your "real thoughts" vs learning to structure them as an essay).
I agree with you--reading and writing must both be done frequently. Ideally both are occurring constantly.
However, the problem with "learning to structure your thoughts in an essay" is that most schools teach one style of essay, which is a "baby thesis" (or a five-paragraph essay with in-text citations, written without use of the third person.) It's incredibly boring, and what's more it's not a convention that the majority of great essay writers in the past stuck to. Furthermore, the choice of subject matter is decided by the teacher, which means that there isn't any chance to develop your skills based on subject material that you actually care about. If the only exposure to essay writing that kids have is "mandatory topics on mandatory novels in a mandatory framework", it's highly unlikely that any but the top 5-20% will actually develop any real taste for reading and writing that persists into adulthood.
I would prefer to blow open the playing field and allow students to submit any kind of writing, including first-person and personal opinions, and then have the option to publish the essays centrally so they can read each others' work and respond, as occurs in adult society. The writing quality and volume should be mandatory, but the form and content should not.
It's disclosed on a banner across the top of literally every cnn-uncensored page that's being 'outed' here. He could have saved the entire research/dig by simply screenshotting the top of any of the pages. That wouldn't have the same energy or 'Ahah!' though.
It is better, and yeah for anybody who read the series the ending was especially awful. It's been awhile but I feel like they packed at least one book into the last 2-3 episodes of the last season. The book series still has a weird 30 year jump, but you stay there awhile at least.
For the first few seasons of the show I thought they did a good job, even though (or maybe because?) the show departs from the books in a lot of ways. But they tried to cram way too much into the last season and just made it seem like jibberish.
The book ending ("and then they gave up") put me off so much that I never bothered finishing the TV series. Given that, any thoughts on how I might find the TV series ending?
At the end of the day it has to go somewhere, and there's no room for it in the five boroughs, so they pay what they need to pay. And it's still cheaper than sending it overseas (otherwise they would).
NYC is a bit of a special case for a lot of things due to it's size/density and location. Most places don't ship their waste that far from it's origin because it's expensive.
The photos are gorgeous. The first one, of the motor disassembly area, has a bridge crane (labeled M-23) with a 1-ton capacity?? I didn't realize bridge cranes that size went that low.
Interesting point. I am sure the steel beam that is stenciled with "1 ton" can hold more than that, but the plasticky thing that's the actual lifting mechanism looks pretty hardware-store grade.
If you do that, you can see the "1-ton" rating marked on the trolley. It's possible the original crane was rated higher, but when the trolley needed replacing they just bought the size trolley they needed, leaving the girder overrated.
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