- Artemis tanks were 10m wide and 30m tall.
- Cylinder surface Area = (2pir^2^) * (2pir* h) ^[curved area plus top and bottom circles]
- 2 * pi * 5 * 30 ~ 1100m^2^ to paint
- Paints paints about 10m^2^ per Litre paint
- Need 1100 / 10 = 110 Litres of paint
- 1L of paint weighs about 2kg
- 110 Litres of paint weighs about 220kg
TankovayaDiviziya@lemmy.world 4 days ago
I’m too dumb for maths because I have dyscalculia, but i am always amazed by the engineering crowd on how they could improve efficiency by finding and tweaking just the little things.
tetris11@feddit.uk 3 days ago
icelimit@lemmy.ml 3 days ago
Til dyscalculia. I hope you weren’t born in asia
TankovayaDiviziya@lemmy.world 3 days ago
I am Asian 😂 I refuse to live up to the stereotype!
chiliedogg@lemmy.world 3 days ago
Or expectations!
Or are you a doctor?
TankovayaDiviziya@lemmy.world 3 days ago
I won’t go too specific but my background is in biotech.
icelimit@lemmy.ml 3 days ago
So… you’re going to be a lawyer then?
TankovayaDiviziya@lemmy.world 3 days ago
I already work on STEM, without the E, but a little bit of M.
neuromorph@lemmy.world 4 days ago
Its simple rocket math. Every lb of weight must consume fuel.
Si.pky. 1 lb of weight needs 1 lb of fuel to escape orbit. But the fuel has weight also. So the effective fuel you need to lift the rocket and payload is exponential
Town@lemmy.zip 3 days ago
The tyranny of the rocket equation. Generally, 1% of weight is payload, 85% is fuel.
scientificamerican.com/…/escaping-the-tyranny-of-…
GamingChairModel@lemmy.world 2 days ago
Good article for pointing out that specific rocket math. The optimistic tone of that article, though, is very much a product of its publication date of February 2020. The space programs have suffered major technical, financial, and political setbacks since then, and the geopolitical moment doesn’t really lend itself to megaprojects like moon missions.
Lucky_777@lemmy.world 3 days ago
The sooner humans can move past rocket tech the better to be honest.
NewSocialWhoDis@lemmy.zip 3 days ago
Stop living in a gravity well and we wouldn’t have to expend energy to get out of it!!