Sporty's Tip: Aerodynamics of a Stall

Sporty's Pilot Shop presents the aerodynamics of a stall.

[kamealex]

The string thing is just beautiful for explaining stall.

[Aelipse]

This is awesome! Possibly THE best visualisation of laminar vs turbulent airflow above the wing in a stall situation I have ever seen anywhere. Thank you!

[troymclean]

Love this visual! Really helps to SEE how a stall occurs. Thanks!

[abbieamavi]

love the strings!! very clever, I can imagine the work it took to put them all in place too. Thank you for this greatly detailed video review before my CFI checkride next week!

[StephenSD-P]

Well now this is interesting, if I'm not mistaken Sporty's Pilot Shop is located about 20 min away from me at Clermont Co. airport here in OH. I'm going to be making a trip here soon to take the written test for my part 107 cert.

[haob]

Very well explained, thanks for the video

[guliyevshahriyar]

Thank you very much~ this video is phenomenal

[david_porthouse]

Best way to see a stall is with an aerofoil in a wind tunnel connected to a multiple manometer, with alternate manometers connected to alternate sides of the aerofoil. Lift is is roughly proportional to the area you can see delineated by manometer levels. At an angle of attack of 12-14 degrees you will see a sudden drop in area. This is the stall, and it is accompanied by a big increase in drag which should be avoided. In addition the flow is likely to change from steady flow to distinctly unsteady flow, and the pilot of an aeroplane will feel some buffeting after a stall.

In an aerofoil on the point of stalling, vorticity diffuses out from the front of the aerofoil and should be reabsorbed at the back. This reabsorption is a precarious process for the almost-stalled aerofoil on the upper surface at the rear, and fails catastrophically once stalling has begun.

[sohail]

Hello,
Do I understand it right that,
Stall will happen when you have a large angle of attack at relative low speed?
But if, with the Same Angle of Attack, the speed is much higher, then stall won't happen. Right? And the plane will climb up of course. Right?
If right, What are those speeds and angle of attacks?
If not right, Then how come that fighter jets and other acrobatic planes can climb strait vertically?
I suppose this is because of their high speed, which provides enough lift, no matter in what direction they move.
So why can't normal plans in a critical angle of attack give full throttle to gain more lift?

[ericlarue]

Wings stall when they stop deflecting air.

[creamychoclatelobsterwarri]

Angle of attack? What are they attacking

[vatoloco]

Came from Nepal plane crash where the cause is supposed to be aerodynamic stall

[ericlarue]

No, lift isn't caused by low pressure above a wing. Lift is low pressure above a wing. Lift doesn't cause lift. Wings get lift by deflecting air. You dont get low pressure and then get lift from the low pressure. You get the pressure differential when you deflect air. If you don't, you don't get lift.