Showerthoughts

29698 readers

782 users here now

A "Showerthought" is a simple term used to describe the thoughts that pop into your head while you're doing everyday things like taking a shower, driving, or just daydreaming. A showerthought should offer a unique perspective on an ordinary part of life.

Rules

All posts must be showerthoughts
The entire showerthought must be in the title
Avoid politics
1. NEW RULE as of 5 Nov 2024, trying it out
2. Political posts often end up being circle jerks (not offering unique perspective) or enflaming (too much work for mods).
3. Try c/politicaldiscussion, volunteer as a mod here, or start your own community.
Posts must be original/unique
Adhere to Lemmy's Code of Conduct-----

founded 1 year ago

MODERATORS

[email protected]

464

It's crazy that a 60 ton metal airplane can just fly (lemmy.world)

submitted 1 week ago by [email protected] to c/[email protected]

192 comments fedilink hide all child comments

I flew for the first time on a plane last week and I've seen planes take off at the airport. It looks crazy. But being on one is totally different like holy shit. The thing just FLIES. It just.... Soars... Through the sky! Like whoa man. Wtf... It's crazy. With how much these things weigh, it's insane to me the thing can just go up and bam, there we are, we're flying now. Like wow... Dude crazy.

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 1 points 6 days ago* (last edited 6 days ago) (1 children)

Keep this handy for this situation.... https://www.grc.nasa.gov/WWW/k-12/VirtualAero/BottleRocket/airplane/wrong1.html

See #3. Wings are not constrictions in a tube.

[–] [email protected] 1 points 6 days ago (1 children)

From your source:

{The upper flow is faster and from Bernoulli's equation the pressure is lower. The difference in pressure across the airfoil produces the lift.} As we have seen in Experiment #1, this part of the theory is correct.

Sure, it might be more complicated and there are other forces at play. Also, top and bottom air molecules may not reach the backside of an airfoil at the exact same time, but that doesn't diminish the effects of this pressure differential on lifting force.

[–] [email protected] 1 points 6 days ago* (last edited 6 days ago)

Sorry, i meant in the classical form of bernoulli's equation it's been a while. It's common for people to suggest the wing is half a venturi, then try to apply 1DOF algebraic equations which don't work here.