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This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?


Update:

Addressing @charlesbretana's answer that says all airplanes decrab (including jet airliners that are the focus of this question), I respectfully disagree. From Eurocontrol's SKYbrary:

For most Operators of transport aircraft, and for most current aircraft types, the required or recommended means of flying the final approach to land is with wings level and applying a drift correction to compensate for any crosswind component. This type of approach is often referred to as a "crabbed approach".

And plenty of crabbed landings as further proof here: YouTube.

This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?


Update:

Addressing @charlesbretana's answer that says all airplanes decrab (including jet airliners that are the focus of this question), I respectfully disagree. From Eurocontrol's SKYbrary:

For most Operators of transport aircraft, and for most current aircraft types, the required or recommended means of flying the final approach to land is with wings level and applying a drift correction to compensate for any crosswind component. This type of approach is often referred to as a "crabbed approach".

And plenty of crabbed landings as further proof here: YouTube.

This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?

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user14897
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This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?


Update:

Addressing @charlesbretana's answer that says all airplanes decrab (including jet airliners that are the focus of this question), I respectfully disagree. From Eurocontrol's SKYbrary:

For most Operators of transport aircraft, and for most current aircraft types, the required or recommended means of flying the final approach to land is with wings level and applying a drift correction to compensate for any crosswind component. This type of approach is often referred to as a "crabbed approach".

And plenty of crabbed landings as further proof here: YouTube.

This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?

This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?


Update:

Addressing @charlesbretana's answer that says all airplanes decrab (including jet airliners that are the focus of this question), I respectfully disagree. From Eurocontrol's SKYbrary:

For most Operators of transport aircraft, and for most current aircraft types, the required or recommended means of flying the final approach to land is with wings level and applying a drift correction to compensate for any crosswind component. This type of approach is often referred to as a "crabbed approach".

And plenty of crabbed landings as further proof here: YouTube.

minor images adjustments and video time-stamps
Source Link
user14897
user14897

This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (videovideo).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (videovideo). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?

This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?

This always confuses me from a physics perspective. Upon touchdown, what is the effect of the wind on a large airplane/airliner (Boeing 737 and above)? Below are three cases I put together to make it easier to explain my confusion:


enter image description here

No decrab, the wind acts on the tall fin yawing to plane further into the wind at touchdown, but the pilot anticipates it and counters this by pushing the rudder downwind (video).


enter image description here

The pilot decrabs, overcooks it (rudder remains deflected), and the correction is rudder upwind initially (video). Based on the previous analysis, the wind would have helped to correct it.

You see in the video the second time they are facing upwind, the pilot lets the wind correct it before settling on rudder downwind like the previous example.

So I have two cases that say eventually it's rudder downwind, and this case in particular shows the yaw effect on the fin (with and without using the rudder).


enter image description here

What I normally read: the wind pushes the aircraft, and the correction is rudder upwind. This AOPA article for instance, shows a drawing with the wind force pushing a [small-er] plane downwind.


Apologies if I butchered the crosswind landings. To summarize:

When the wind acts on the tall fin upon touchdown, is there a yaw effect, or does the wind push the airplane downwind? And what is the rudder correction to be anticipated?

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