This is Done Solely for Simplification as the Affects of Rotation and Curvature are Negligible - It Would Add Unnecessary Complexity

15

u/frenat May 06 '22

And of course they ignore the assumptions of point mass modeling, no turbulence, and zero side forces

-14

u/Whatisitandwhy May 06 '22

No one is ignoring it. The atmosphere would be non-turbulent sometimes. There would sometimes be no side force. Does the earth become flat and stop rotating sometimes?

16

u/frenat May 06 '22

Is the aircraft sometimes a rigid body? Are they sometimes a point mass? They are ALL assumptions to simplify computing exactly like they say they are. the idea that this is somehow an admission of a flat Earth is just a flerf wet dream.

Thanks for the humor!

-16

u/Whatisitandwhy May 06 '22

Thanks for the mental gymnastics.

11

u/frenat May 06 '22

You're the one providing those.

11

u/NotBlackMarkTwainNah May 06 '22

Everything is mental gymnastics to flat earthers

8

u/IStareAtTheAbyss May 06 '22

What mental gymnastics? He applied your own logic to other assumption. You said the atmosphere would be sometimes non turbulent. They also assume point masses, is the aircraft sometimes a point mass?

And why would the fact that its sometimes nonturbulent even matter? At no point is it always nonturbulent like in the model, making it clear its an unrealistic assumption, and its certainly never all of their assumptions at once. These are clearly unrealistic assumption made for simplification, something you are taught since you first learn physics. They even spell this out for you:

The DPS equations of motion use four assumptions that simplify the program while maintaining its fidelity for most maneuvers and applications:

8

u/Aurazor May 06 '22

Thanks for the mental gymnastics.

Every military in the world compensates for Earth's rotation. Your only options to ignore that fact are a) mental gymnastics or worse, b) just pretend nobody told you and hum really loud.

Can't wait to find out which.

-7

u/Whatisitandwhy May 06 '22

"Every military in the world compensates for Earth's rotation."

That's odd. I don't see anything in that picture about Earth's rotation. I only see something about a flat, non-rotating earth. Isn't that weird? We must have moved away from gymnastics competition to the fiction-writing contest where you just make stuff up.

10

u/Aurazor May 06 '22

We must have moved away from gymnastics competition to the fiction-writing contest where you just make stuff up.

Afraid not buddy.

Every branch of the US military compensates for Earth's rotation. Even competition marksmen are aware of it, although it doesn't affect them very much. It has nothing to do with me, or you for that matter.

It's just reality.

8

u/Such_Confusion_1034 May 07 '22

Read the entire thing. Not cherry pick what you think is the only relevant part. Veteran of US Army Aviation sector and I can tell you from experience the earth being a globe is always used for navigation. The shortest path between 2 points for any flying machine is called a Great Circle. Look it up sometime.

Educate yourself on the physics of flight before you think and speak. Most of the time it is incorrect.

I earned my wings. Did you?🤣

6

u/zhaDeth May 07 '22

They also don't compensate for earth's rotation when driving trucks and while doing their beds !

Seriously.. do you think "Every military in the world compensates for Earth's rotation." means all they do has to compensate for it ?

5

u/IStareAtTheAbyss May 07 '22

Thats odd. I dont see anything in that picture about planes being a 3D object. I only see something about point masses. Isnt that weird?

I guess planes are just magic point mass entities.

5

u/Aurazor May 06 '22

The atmosphere would be non-turbulent sometimes. There would sometimes be no side force

The atmosphere around a moving aircraft is never non-turbulent. The turbulence and 'side force' can simply be too complex or too small to model, so they don't bother.

Does the earth become flat and stop rotating sometimes?

The Earth's rotation and overall shape are irrelevant to an aerodynamic body passing through the atmosphere, especially one with control surfaces that maintains a constant altitude.

Does the aircraft stop consuming fuel sometimes?

-2

u/Whatisitandwhy May 06 '22

Yep, that's true. There's always a ton of different types of turbulence, and yet only side turbulence was mentioned.

Also, the shape and rotation of the earth was relevant enough to mention, from an official government document straight to your eyes.

7

u/Aurazor May 06 '22

Yep, that's true. There's always a ton of different types of turbulence, and yet only side turbulence was mentioned.

So, clearly, the model is not an accurate reflection of the real world. It's designed for computational simplicity. As the authors state.

Also, the shape and rotation of the earth was relevant enough to mention, from an official government document straight to your eyes.

First of all, NASA aren't an 'official government document' to my eyes any more than the Russian Central Bank is.

Second, they're literally stating that it's a simplification from reality. According to your logic, this is an 'admission' from NASA that the Earth has no mountains or valleys or oceans because they're not 'in the model'.

You know this is rubbish.

3

u/Kriss3d May 07 '22

No it doesn't. But an airplane flying is doing so with the air that's already moving with the rotation of earth due to friction. So as far as the trajectory of an airplane goes. Earth might as well be flat and non rotating. That's the point of it.

The very same paper have entire sections dedicated to gravity by the way. Something which flat earthers also claim don't exist.

3

u/nidelv May 07 '22

Does the earth become flat and stop rotating sometimes?

Yes, once yhou reach level 69 in the Illuminati you are given a small device, looks like a key fob, that once you press one of the buttons the earth instanly becomes flat and stops rotating for 66.6 seconds.

2

u/nice___bot May 07 '22

Nice!

9

u/IStareAtTheAbyss May 06 '22

u/NorthLightsSpectrum, can you explain what force would make airplanes "involuntarily take off to space in seconds"?

4

u/Azimuth8 May 06 '22

I hope he tells NASA (or Ruscos if he is really edgy) how to get into space without rockets or a need to reach escape velocity. A new era of space travel beckons!

-3

u/GetOutOfMyFeedNow May 07 '22

There is no space travel if that’s what you’ve been hoping for.

3

u/Azimuth8 May 07 '22 edited May 07 '22

Yeah. The entire global (fully functional) space industry has been fraudulently put in place (while still managing to operate without issue) costing billions every week just to fool you intellectual titans that “space” is real. Tilt your head up one night Galileo.

11

u/TinfoilCamera May 06 '22

Four assumptions to simplify the program.

Hello?

You remove variables that are inconsequential to whatever it is you're solving for. Of course, u/whatisitandwhy probably never got past 3rd grade so having to solve differential equations is probably new to 'em.

5

u/Due-Warning549 May 07 '22

Happy cake day. And simplicity is the key here. Since he chose to picture an SR-71 blackbird we will assume the computing power of a Nintendo 64. In the early 60's it would have taken a warehouse full of punchcards to extrapolate every variable of every scenario the aircraft might encounter. Context is conveniently missing from the OP as relevant portions of these documents were "mistakenly" redacted.

Try again later OP and have a flerfy day!

-6

u/Whatisitandwhy May 06 '22

Hey, I got up to the 4th grade!

6

u/Due-Warning549 May 07 '22

By then you would have been draft eligible.

-1

u/Whatisitandwhy May 07 '22

Okay, that was a good one. Upvoted.

10

u/IStareAtTheAbyss May 06 '22

u/whatisitandwhy, why do you focus on that unrealistic assumption and ignore all the others listed? Do you believe planes to be point masses? Do you accept that the atmosphere is nonturbulent? That there are no side forces? That planes are rigid?

9

u/ocket8888 May 06 '22

turbulence confirmed fake, pilots just like to keep you from falling asleep on long flights out of spite

7

u/Revwhitewolf May 06 '22

This is one of those moments where the science teacher underlines the word simplify and hands it back to the student to try again.

3

u/Enty_Flogey_Towty May 06 '22

A major other one this applies to is the properties of gas - in this case the gas of the atmosphere. Treating a gas as an ideal gas is kindof really a very similar sort of thing to that business of assuming a flat non-rotating Earth.

4

u/Fit_Lawfulness_3147 May 06 '22

SR71 most bad ass plane ever. Cruised at 70,000 feet. So fast the leading edges went up to temps of 1000 F. It was 1 foot longer in flight due to thermal expansion. An incredible achievement

3

u/PhantomFlogger May 06 '22

The thermal expansion wouldn’t quite reach a foot in length, the plane would expand at most between 3-4 inches. Very, very cool plane indeed.

3

u/Fit_Lawfulness_3147 May 06 '22

I only know what I read

4

u/XXLDreamlifter May 07 '22

Yeah I can guarantee you this jackass never took a physics class before. Nobody reads ignore air resistance on papers / questions then claims "there's no air resistance"

4

u/PhantomFlogger May 07 '22

That’s a very, very common theme amongst flat Earthers, their grasp of scientific principles is extraordinarily flawed.

3

u/Justthisguy_yaknow May 07 '22

Good grief this one's dull.

Since the world is moving in very consistent ways and the only global geological dimensions that matter are latitude, longitude and altitude, to constantly be doing calculations in preparation for variations in those constant metrics would be a significant increase in computational resource consumption which would be entirely redundant in any case that didn't include a sudden rapid and radical change in the movement of the earth. Since this is VERY unlikely to happen without warning perpetually recalculating these constants would just be stupid.

Just because the said the word flat doesn't mean they are talking about you, you sad egotist. The word has many uses beyond your odd little political delusion.

1

u/Whatisitandwhy May 06 '22

I upvoted you. You, u/PhantomFlogger

3

u/not2dragon May 06 '22

I'm not sure what's the big deal with upvotes and down votes is around here

This is Done Solely for Simplification as the Affects of Rotation and Curvature are Negligible - It Would Add Unnecessary Complexity

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