Acetamide

u/Acetamide@lemmy.world
29 posts · 127 comments

Recent posts

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on Wet wipe. · c/dontyouknowwhoiam · 118 pts · 2y

It's incredible what lengths people will go to experience a short high of moral superiority.

on Physics. · c/science_memes · 11 pts · 2y

Ah this brings me back to my bachelor course on Quantum Physics. Once you end up with intermediate equations spanning a full sheet of paper you start questioning your life choices.

I'm so happy that McLaren is keeping form. In the F1TV commentary they said that they (McLaren) were not expecting much from the Hungaroring, but Norris made it into third with Piastri keeping up in fourth!

Many "space" fuel tanks have inflatable bladders inside to control the pressure and location of the fuel, especially in zero-g. Otherwise, the fuel could float away from your tank valve. It is possible that this tank has a fully or partially inflated bladder, making it much more buoyient.

I'm 100 percent certain that this is a spacecraft or launcher fuel tank. I've worked on reentry analyses of spacecraft fuel tanks before, and I can tell you that these very commonly survive re-entry for several reasons.

Firstly, they are by far the largest components housed inside the vehicle's outer structure. The structure usually takes the brunt of the aerodynamic and thermal forces, protecting the tank from the largest destruction.

Secondly, the tank itself has to handle the huge fuel pressures involved (easily going towards many hundreds of atmosphere pressures!). This obviously means that incredibly tough materials have to be used.

Thirdly and finally, as can be seen in the pictures, their shape is symmetric, making the shape aerodynamically very unstable. This means the fuel tank has the tendency to tumble in the airstream. The tumbling continuously causes different parts of the tank to be exposed to the heat and other parts to cool down.

Fuel tanks are the major risk during reentry to people and other stuff on the ground, perhaps together with the massive engine blocks. To minimise the chances of hitting someone or something, re-entries are nearly always aimed at the Pacific Ocean, hence them being more likely to wash ashore in Australia.

Interestingand good idea. I find the examples already quite clear.

As someone who manages projects as a living (but I'm not necessarily and primarily a project manager) this is definitely something I will keep an eye on. I often get fed up with the scattered tooling available which often includes one or more Excel sheets. This sorta works, but it is not the original intention of all the software.

What I would definitely be interested in would be the parsers coming out for this and their ability to do reporting for both planning purposes (e.g. Gantt charts) and for analysing historic tasks. The markup itself already seems quite straightforward.