Comment on A handy reference guide for you
mech@feddit.org 2 weeks ago
The myth that bumblebees shouldn’t be able to fly according to science needs to die.
They wouldn’t be able to fly in an outdated, simplified model, where you just plug in their wingspan, weight and how fast they move their wings against air resistance.
If you account for the fact that air molecules are a lot larger relative to their size than to a bird’s, and therefore air acts more like water at that small scale, it’s no surprise they can fly, and scientists know that.
EldritchFeminity@lemmy.blahaj.zone 2 weeks ago
I remember watching a video from a physicist who failed her pilot’s license exam because she explained that and the modern theories of how airplane flight works instead of the old wingspan, weight, speed, and air density over the wings model.
Needless to say, she took the test again, gave the answer they wanted, and the video was about her building a plane out of wood about a month after she finished the launch of her Mach 2.1 capable model rocket.
TheBenCommandments@infosec.pub 2 weeks ago
Well that sounds cool. Got a link?
EldritchFeminity@lemmy.blahaj.zone 2 weeks ago
Here’s a video she did of a 3d printed supersonic rocket. I think it’s the Mach 2 one, but I don’t exactly remember:
youtube.com/watch?v=HU3YnVzqExA