Isn't Tg a poorly defined metric? It seems like thermoplastics will lose their strength as temperature goes up and there's no abrupt transition where there's a near step-change in behavior
I doubt there is any form of ABS filament with such a low glass transition temperature. As the original poster said, it was probably PLA.
I find it odd that the report didn't name the manufacturer of the part, and that the part was not listed on the LAA modification form. There can't be many people selling such parts at airshows, so you'd think the investigators would have been able to find out who made it.
Now I wonder if the previous owner (who installed the new fuel system) printed the part himself, then claimed he bought it overseas to avoid blame.
Also it's insane that they used a bolted joint with plastics on a critical place, the plastic will creep under the clamp load and will lose clamp force.
Well, no, it's in the UK. It also has a gross weight of around 2000lbs, so it's probably not subject to any of the relaxed regulations anywhere, although I don't know how the UK homebuilt rules work these days.
I used cashapp's free tax software and it was pretty good. Similar quality to TurboTax but free. I had regular W-2 income, a whole lot of 1040 forms, and an S-1 form from some ETFs.
Well for cars, you do need to be on the active lookout for pedestrians, other cars, etc, but for planes generally you are mostly looking at instruments. You only really look outside if you expect something is coming, and the HUD isn't really a distraction there.
Nah; Apple's notoriously not-very-good 12" MacBook and the Chromebook Pixel had it since 2015, and Apple's more mainstream laptops since 2016. Nintendo doesn't really have any excuse for the original Switch's problematic USB-C beyond laziness: https://news.ycombinator.com/item?id=16706803
Early devices were things like the OnePlus 2 [0] and there were plenty of phones out before the Switch even hit the market in 2017 [1]. There were some issues with standards compliance, sure, but the market had vastly improved by the time the Switch had come out.
My interpretation of entropy is that if you have X states that are equally probable, but not all states are distinct from each other in some sense, then the next state will likely be one where the states satisfying that condition is most numerous.
For example, if you flip N coins, there are 2^N states available once the flip is done. Each outcome has an 1/2^N probability of outcome. There's only one state where all of the states show all heads. While there's only one state where coins numbers 1-N/2 are heads, and N/2-N are tails, so that particular outcome is 1/2^N, if all we care is the macroscopic behavior of "how many heads did we get"--we'll see that we got "roughly" N/2 heads especially as N gets larger.
Entropy is simply saying there's a tendency towards these macroscopically likely groups of states.
This is a common reason that Sailors are known for partying after long deployments.
Imagine you are 21 and unable to spend money, have free housing (the ship) and free food, then you land in a foreign country where you can finally drink after 8 months at sea with all the money you saved.
This is US Navy-specific, and the person you are replying to seems to have a dated experience of when beer days are authorized. It's every 45 days underway without a port call in sight, and this is governed by formal published regulations. Most ships pull into port at least every 30-40 days outside of major combat.
Ground troops in Iraq and Afghanistan in the Global War on Terror were under General Order #1, which prohibited alcohol in theater, but elsewhere like Djibouti and Qatar were authorized three beers a day maximum.
