this post was submitted on 18 Oct 2025
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Science Memes

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top 33 comments
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[–] tyler@programming.dev 52 points 2 days ago (2 children)

Did nobody else notice that they’re pointing the bow lower than 45° but the line is drawn slightly upwards up compensate?

[–] OddMinus1@sh.itjust.works 4 points 1 day ago

Also, the arrow has some serious gliding effect on its way down.

[–] jol@discuss.tchncs.de 26 points 2 days ago

If you keep falling short, cheat. Or if you keep falling short, your rich parents will prop you up.

So inspiring.

[–] supersquirrel@sopuli.xyz 60 points 2 days ago* (last edited 2 days ago) (2 children)

Also if you need your arrows to land all at the same time so you can fool the enemy into thinking you are many archers fire like this.

[–] NeatNit@discuss.tchncs.de 48 points 2 days ago (1 children)

bottom projectile traveling at mach 5

[–] Tja@programming.dev 11 points 2 days ago (2 children)

Bottom projectile is traveling at a normal speed, just fired last.

[–] KoboldCoterie@pawb.social 28 points 2 days ago (2 children)

Then the distance must be almost zero, as it exhibits no drop over that range.

[–] Cawifre@lemmy.world 24 points 2 days ago (2 children)

That might have something to do with this being a chart for powered missiles.

[–] FishFace@piefed.social 4 points 1 day ago (1 children)

The diagram is about normal unpowered shells. They use different amounts of propellant to achieve different projectile speeds

[–] Cawifre@lemmy.world 3 points 18 hours ago (1 children)

Y'know, I think you're right. That gray bit looks like the tank barrel. I mistook that as part of the projectile path, and I misinterpreted the overall design as a missile battery.

[–] FishFace@piefed.social 2 points 15 hours ago

If you want to know more, look up Multiple Round Simultaneous Impact

[–] KoboldCoterie@pawb.social 10 points 2 days ago (2 children)

However, the comment was talking about arrows...

[–] HowAbt2day@futurology.today 17 points 2 days ago

I’m over here with some popcorn as nerds debate the project motion of a hypersonic missile named “arrow” and shit.

[–] ulterno@programming.dev 0 points 2 days ago

Go with a fantasy arrow made of light, for the last one.

[–] Tja@programming.dev 5 points 2 days ago (1 children)

I see a significant drop...

[–] KoboldCoterie@pawb.social 2 points 2 days ago

Are we looking at the same image? DO I NEED TO GET A RULER?

[–] FishFace@piefed.social 1 points 1 day ago (1 children)

That is not how this concept, time on target, works

[–] Tja@programming.dev 1 points 1 day ago (1 children)

It works by firing at mach 5?

[–] FishFace@piefed.social 2 points 1 day ago

It's easier to just refer to "multiple round simultaneous impact" than to try to explain succinctly, especially since I already got the term kinda wrong (time on target is more of an umbrella category/earlier version)

[–] niktemadur@lemmy.world 2 points 2 days ago

I wanna see a reverse brachistochrone!

[–] zxqwas@lemmy.world 26 points 2 days ago (1 children)

In a frictionless vaccuum 45° would be max range.

[–] SatansMaggotyCumFart@piefed.world 12 points 2 days ago (1 children)

Yeah you actually want a bit less then that.

[–] Ooops@feddit.org 15 points 2 days ago* (last edited 2 days ago)

Unless you use modern artillery. Then you want to aim even higher because at those ranges/heights it's beneficial to reach less dense air layers quickly.

[–] SpaceCowboy@lemmy.ca 12 points 2 days ago (1 children)

The optimal launch angle would only be 45 in a vacuum. It'll be lower if you're on Earth where there's air resistance.

[–] ulterno@programming.dev 3 points 2 days ago* (last edited 2 days ago)

Yeah, that's why try multiple times and aim higher every time until 45°
Once you reach that, if you are still falling short, you know you have no chance, unless you increase the launch speed.

Of course, you can try to properly calculate drag for each projectile and set that as the maximum, but it's fine for a one-off, assuming you have enough arrows to try again.

[–] innermeerkat@piefed.social 4 points 2 days ago* (last edited 2 days ago)

Instructions unclear and took an arrow in the knee

[–] niktemadur@lemmy.world 3 points 2 days ago

And if you still can't reach it, ask your god or gods for help,
as it's beyond the reach of Mr Newton or even Herr Leibniz.

[–] snoons@lemmy.ca 3 points 2 days ago (2 children)
[–] ininewcrow@lemmy.ca 4 points 2 days ago (1 children)

Unless you can achieve a certain amount of force .... then you can get a stable orbit around the planet

[–] CannonFodder@lemmy.world 4 points 2 days ago (1 children)

Not unless you have something to alter the trajectory in flight.

[–] snoons@lemmy.ca 3 points 2 days ago

EEXXPLOSSIIOONSS??!

[–] RedBauble@sh.itjust.works 2 points 2 days ago

CAN WE GET MUCH LIGHTER

[–] NigelFrobisher@aussie.zone 2 points 2 days ago

That’s only about 30 degrees.