ATPL Meteorology - Class 13: Turbulence and Windshear.

ATPL Meteorology - Class 13: Turbulence and Windshear.
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Welcome to the 13th class in the Meteorology series.
Turbulence leads to an uncomfortable flight and we want to avoid it if we can. A more severe form of turbulence is windshear which is a sudden change in the wind direction and can be very hazardous to aircraft. In this class we will have a look at what causes both.
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Aiming to assist with ATPL theory exams and the ground school aspect of ATPL training. Including helpful tips for studying and to use in the exam.
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[@woutbennen5298]

i'am only here fore the ''let's find out''

[@Pilot_Mar]

bro, just finished all the videos thanks for explaining it. well detailed and im waiting for the next video!! thanks again mate and good day!!

[@atplclass]

Glad you like them!

[@-CHANDER]

How far is the Meteorology series finished? I just want to get an idea because the videos are well explained and would like to know if there is anything missing. Great work man, love the way you explain!

[@atplclass]

I've only got a few more videos to do, the scripts are written i just need to set aside some time and film/edit them. They will be bout Air Masses/Pressure Systems. Fronts/Depressions. Climatology. Met Reports. It won't be long, just bear with me as i am very busy at the moment.

[@-CHANDER]

@@atplclass Thank you man. Really appreciate the work. Got my exam in a couple of weeks so these have been very helpful.

[@enesipek5549]

Thanks for the video Grant👍 I have a bit trouble the relation between headwind-IAS. What do you advise me to figure out this relation? How does tailwind-headwind effect IAS? 🤔

[@atplclass]

Imagine you are on a train moving up and down the carriage, your speed is relative to the carriage, this is your IAS, your IAS will be measured relative to the mass of air you are moving through (inside the carriage). The speed of the train then determines how fast you move along the ground so the train speed will either make us travel faster or slower and that is the wind.

[@saurabhsrivastava218]

In the section of wind shear Vs aircraft, you mentioned that IAS is inclusive of headwind/tailwind component. However IAS will not change irrespective of winds. It has to be ground speed. Can you please explain

[@atplclass]

Your IAS will change if you lose the wind.
This is because a pitot tube works by comparing the total pressure it feels then subtracting the static pressure to find the dynamic pressure and then calculate speed from that. The pitot tube doesn't care if this total pressure is measured as a combination of forward speed and wind it just senses the total. So when you suddenly lose the wind the total pressure drops and therefore the dynamic pressure and speed indication will drop as well.
I think I see your confusion though. Say IAS of 100kts with 20kt headwind. That means GS of 80kts. That IAS is made up of an 80kt forward speed plus the 20kt wind. if you were to remove the wind completely then the IAS would drop to 80kts to match the GS