I had to live through a year of endless replays of "go at throttle up"
it's still traumatizing to this day, please don't screw this up
> hydrogen leaks have plagued the SLS since the beginning. That’s partly because liquid hydrogen is a notoriously tricky fuel to work with, as these tiny molecules can slip through miniscule gaps in seals and joints. It’s also extremely cold (-423 degrees Fahrenheit, or -253 degrees Celsius), which can cause hardware to become brittle and crack
This is weight distribution on a flat plain. Think of Roman Arches.
On a curved plain, weight distribution of THIS origami falls apart as pressure is added horizontally (not just vertically).
I've made similar tessellations before, they can be curved. You can trivially make a pre-folded tessellation into a cylinder of arbitrary diameter; to curve it like a submarine, you'd just adjust the angle of the creases. Optimize the curve so the pressure is always perpendicular and there's no problem here.
The real issue here is that there's not much point in it, as the very thing that makes this useful (the ability to fold it up) would also make it collapse easily in a pressurized environment. You'd also have to deal with preventing leaks if you wanted air inside, likely by adding an outer hull, which would then defeat the purpose.
Submarines work on the principle of the arch: a spherical or cylindrical hull section transfers all the force into compression of the material so there is no net "inwards" force.
The weak points then turn out to be joints, material defects (the famous Titan failure), windows and other piercing points, and any unexpected shear forces.
In my experience, just fine. I recently ran a large (~30k) marathon and my AirPods and watch never glitched once, streaming the whole time including in the packed start corrals. I had the same thought about RF contention, but Bluetooth didn't seem to care.
The amount of data needed to send audio to your ear-buds is quite small compared to the spectrum available, so only needs tiny slices of spectrum and for relatively tiny slices of time. And also relatively tiny amounts of power since it's only going max 100 feet, hence a pretty small chunk of space.
If all those 10K-30K devices are constantly jumping around the frequency band to transmit tiny payloads a tiny distance, then a whole metric fuck-ton of them can interoperate in what seems to us to be very tight quarters. But to those specialzied radios it probably seems like a fairly wide open field.
Sean Duffy hates safety delays
But I never want to see a replay of "go at throttle up" ever again in my life
reply