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.

2 points
Deleted by creator
permalink
report
reply
1 point
*

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.

permalink
report
parent
reply
1 point

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.

permalink
report
parent
reply
1 point
*

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.

permalink
report
parent
reply
13 points

Bernoulli’s principle is certainly involved, but the full explanation is more complicated and arguably beyond high school level:

Although the two simple Bernoulli-based explanations above are incorrect, there is nothing incorrect about Bernoulli’s principle or the fact that the air goes faster on the top of the wing, and Bernoulli’s principle can be used correctly as part of a more complicated explanation of lift.

permalink
report
parent
reply
1 point
*

It’s mostly thanks to the Wright brothers too, damn, that’s impressive beyond words.

permalink
report
reply
0 points

Okay, now let’s discuss flat earthers and the price for a moon ticket. We don’t need to include the space suite.

permalink
report
reply
2 points

Its all in those powerful engines

permalink
report
reply
1 point

Not really. The thrust those engines produce is only about 1/3 the weight of the aircraft. It’s in part thanks to the engines for sure though.

permalink
report
parent
reply
1 point

You make it sound like 1/3 is a small number. That’s enough to accelerate the plane quickly and the speed is what generates lift.

permalink
report
parent
reply
4 points

I just meant that thrust is only 1/3rd the equation. The rest is the wings that convert thrust into lift at 3 to 1 ratio. And then there is all the systems that keep it controllable and safe etc… it’s a miracle machine really…

permalink
report
parent
reply
-3 points

Uh huh. Did you start to believe the earth is round while you were up there too?

permalink
report
reply

Showerthoughts

!showerthoughts@lemmy.world

Create post

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

  1. All posts must be showerthoughts
  2. The entire showerthought must be in the title
  3. 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.
  4. Posts must be original/unique
  5. Adhere to Lemmy’s Code of Conduct-----

Community stats

  • 7.9K

    Monthly active users

  • 1.1K

    Posts

  • 14K

    Comments