Crosswind takeoff or windshear?
Thread Starter
Joined: May 2005
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From: Singapore
Crosswind takeoff or windshear?
Hi Folks,
With regards to the video below,is the sudden disturbance caused by windshear or crosswind?If so,how do you differentiate between the two?
I know its a silly question to ask as its already stated in the video's title but I just want to know more.
YouTube - C-17 Globemaster III Short Crosswind takeoff.
With regards to the video below,is the sudden disturbance caused by windshear or crosswind?If so,how do you differentiate between the two?
I know its a silly question to ask as its already stated in the video's title but I just want to know more.
YouTube - C-17 Globemaster III Short Crosswind takeoff.
Do a Hover - it avoids G
Joined: Oct 1999
Posts: 2,201
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From: Chichester West Sussex UK
Agreed normal use of aileron by pilot.
There is no such thing as a silly question - but you can always tell when an aircraft is affected by a cross wind as in the first moment after unstick the nose will move (yaw) sideways into the crosswind. So wind from the right nose will go to right.
A wind shear is the term used for a sudden and marked change in the local wind strength (and perhaps direction). Passing through a wind shear gives a sudden and marked change of airspeed, which if it results in a loss of airspeed can suddenly reduce the lift available. A sudden loss of height/sink with no change in aircraft attitude (following a period of stabilised flight) could indicate a windshear.
There is no such thing as a silly question - but you can always tell when an aircraft is affected by a cross wind as in the first moment after unstick the nose will move (yaw) sideways into the crosswind. So wind from the right nose will go to right.
A wind shear is the term used for a sudden and marked change in the local wind strength (and perhaps direction). Passing through a wind shear gives a sudden and marked change of airspeed, which if it results in a loss of airspeed can suddenly reduce the lift available. A sudden loss of height/sink with no change in aircraft attitude (following a period of stabilised flight) could indicate a windshear.
