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6:14 AM
@TannerSwett I've not voted, but physically it does not make sense. in a "perfect atmosphere" I seriously doubt you would have to pitch down manually. pretty sure gravity would take care of that for you
 
 
2 hours later…
7:58 AM
I don't think it really answers the question. The question is "if you really flew level wouldn't you fly off into space?" and your answer is "you have to keep making small adjustments to keep the same altitude anyway"
 
 
3 hours later…
11:23 AM
@Federico Well, I didn't mean to imply that the pilots would have to "manually" pitch down. Just that the aircraft would very gradually pitch down one way or another.
 
the paragraph just before "the short version:" does not read that way, though
 
Well, I wrote...
"Instead, they watch the altimeter, and raise or lower the nose as needed to maintain a constant altitude, or to climb or descend as necessary. (Or they set the autopilot to do the same thing.)"
Is that the part you're saying doesn't make sense?
 
Yes.
I admit I never paid too much attention to it, but I am not sure a pilot or an autopilot would ever do anything due to the curvature of the Earth
 
well, not specifically, but you do need marginally less lift because you're flying in a circle instead of a straight line
but yeah, I understand the point that it's lost in the noise of all the fluctuations you have to correct for
 
@Federico I admit, then, I'm pretty confused. I thought "control your pitch in order to maintain altitude" was one of the fundamentals of flying an airplane. Isn't it?
 
11:33 AM
@TannerSwett yes, but to see this effect, if it is there, you have to fly in absolutely perfect atmosphere
that's why I said I never paid any attention to it.
also "flying off into space" requires climbing, climbing needs thrust. If you don't touch the thrust, you won't "fly into space", hence the pilot needs not to correct for altitude, gravity is taking care of it
the only question that remain is if you need to take care of the pitch, or if the aerodynamic stability does that for you
 
I don't fly airplanes, so straight and level flight isn't really in my vocabulary.
So, when a pilot is hand flying, how do they maintain altitude, exactly?
 
@TannerSwett wind, turbulence, any kind of disturbance. all those things have effects order of magnitude stronger than Earth's curvature
 
I know that, I absolutely know that.
I'm well aware that the effect of the earth's curvature is completely and utterly insignificant and negligible.
 
for those things you need pitch and power
because they are strong and they are fast
 
11:39 AM
if you remove those disturbances to have a look at the effect of the curvature, I doubt that you are left with any correction needed at all
 
All right, I think I know how I need to edit this answer.
 
ok, I hope I managed to explain myself :)
 
I'm gonna say something like...
You (the original asker) say that in order to follow the curvature of the earth, an airplane would have to pitch down. Is that correct? Well, fundamentally, the idea is correct, but you end up with the wrong conclusion.
Do airplanes pitch down over the course of a flight over the curved earth? Yes, they do.
Do the pilots need to purposely pitch down in order to follow the earth's curvature? When airplanes do this pitching down, do they do it in a way that the pilots or passengers would notice? No and no.
 
I would say that's ok
 
TBH if you're going to think about it this hard, you should write an answer on the original question, not the duplicate
I might go and update my old answer on the original question later, because this discussion has made me think of a better way to describe it.
 
11:50 AM
@DanHulme That's probably a good idea.
 
12:02 PM
"But I would rather just stick to spin-proof planes! I'm a baby! :p " - Cloud
(https://aviation.stackexchange.com/a/56327/43)

Truer words have never been writ.
 
 
8 hours later…
8:17 PM
Hey all
Disregard, meta is the place for this
 
8:34 PM
0
Q: Should Aviation start requiring artifacts for aircraft-identifcation questions?

Steve V.On Arqade, there's a policy that game identification questions without some sort of media from the game are off-topic, and with the number of questions affected, getting that policy settled was a huge pain in the neck for everyone involved. I'm wondering whether Aviation should consider question...

 
Personally, my vote is that questions without artifacts should be off-topic, but I'm uncertain whether it's a change that needs to be made rather than being handled on a case-by-case basis.
 

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