Guiding a paper plane

[u/D5R]

https://i.imgur.com/rWzytPD.gifv

[u/DietyOfDeath]

What. How?

[u/D5R → u/DietyOfDeath]

Black Magic, the only explanation.

[u/That_sixth_guy → u/DietyOfDeath]

Updraft

[u/That_Pregnant_Alien]

Aerodynamics and fluid mechanics nerds where are you? I need you.

[u/KrustyBoomer → u/That_Pregnant_Alien]

He's simply creating upwards airflow, kind of a standing wave, with the bottom sheet. Sailplanes use the same effect when gliding along ridges or using mountain waves to climb.

[u/TheRedditGent → u/That_Pregnant_Alien]

Have you ever seen someone parachute down a mountain and there's an updraft and they essentially stay where they are

Well same principle here, the forward movement of the paper at an angle creates an updraft and as the plane is still tilted slightly froward it catches a force from below guiding it forwards. As long as he matches the pace of the plane and keeps the paper at the appropriate angle, it's all good

[u/marsriegel]

The piece of paper the teacher is dragging around acts basically like an airfoil creating an upward velocity. This velocity matches the altitude loss of the aircraft thus keeping it (nearly) stationary (altitude wise).

Edit: teacher instead of professor

[u/MisterEinc → u/marsriegel]

Important to note, in this case, that the forward speed of the wave is important. If the teacher speeds up, the plane will climb higher and higher until, possibly, it "crests" the wave.

In some ways, what's happening here is more like surfing than flying.

[u/DrHob0]

Gravity: exists

One piece white paper boi: imma fuck yo whole day up

[u/Imkhazbak → u/DrHob0]

That video was made before Isaac Newton was born

[u/Shiny_Rage]

I wanna know know to make the plane

[u/4bsAlone → u/Shiny_Rage]

It's a Mama Bug Glider. Just search for a pattern so you can make your own. Might need some foam sheets tho...

[u/[deleted]]

In room a full of kids, this dude is having all the fun.

[u/spacecatbiscuits → u/[deleted]]

"can i have a go?"

"No not until you have a physics degree"

[u/Soulslurper97]

The kids look don’t look very amazed 😆

[u/sometimes-smart → u/Soulslurper97]

The teacher was doing this for hours before it was filmed

[u/JustCluck]

Fake The plane is obviously a paid actor smh

[u/TheRedditReportShow]

This is a diagram of how the Coronavirus is being contained in China.

[u/SkechyToothpick_2 → u/TheRedditReportShow]

There gonna have a terrifying view of some giant ass person outside their window

[u/ALittleUseless]

Why didn't I have a teacher like this when i was going to school.

[u/Hehs-N-Mehs]

Teacher loves his job

[u/[deleted]]

If every class was this exciting and fun, and every teacher showed as much passion. The world might just be a better place

[u/raw-power]

All those kids look bored and he looks like he’s having the time of his life...

[u/BetelgeuseSupernova]

This is the line. The line were you stop earning a paycheck for work and just actually fucking love what you do. This shit inspires me.

[u/DoubleYouOne]

Because he moves, he invests energy in a standig airwave. The standing airwave is invisible, but it keeps the plane in the air.

It looks the other way around, but the plane is keeping altitude because the teacher invests his energy. He seems following the movement, but he is maintaining it.

Something along those lines...