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Wake Turbulence

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  • 24-08-2023 3:39pm
    #1
    Sully
    Moderators, Education Moderators, Technology & Internet Moderators, Regional South East Moderators Posts: 24,056 Mod ✭✭✭✭


    A quick question. Was flying to Dubrovnik today when we encountered strong turbulence, I believe is called wake turbulence as it was caused by an Air France aircraft in front. This was about an hour into the flight, lasting some 10mins or so.

    I'm not too knowledgeable on these things but I didn't realise this would happen mid air too, thought it was more so during take off and landing?



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    #2
    HTCOne
    Registered Users Posts: 876 ✭✭✭HTCOne


    This is the worst recent example I’m aware of in cruise:

    https://www.dw.com/en/german-business-jet-flipped-three-times-by-emirates-a380/a-38014996


    I also recall reading an online article from a 777 skipper who encountered severe wake turb in cruise when 1000 ft below and 80nm behind an A380.


    It is most likely to be encountered in departure or approach phases of flight but if traffic, winds and atmospheric conditions allow, it can be encountered at any time.

    Post edited by HTCOne on


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    #3
    cnocbui
    Registered Users Posts: 20,081 ✭✭✭✭cnocbui


    Saw this recently and thought it an excellent visual display of the phenomenon.

    Untitled Image




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    #4
    Sully
    Moderators, Education Moderators, Technology & Internet Moderators, Regional South East Moderators Posts: 24,056 Mod ✭✭✭✭Sully


    https://www.boards.ie/discussion/comment/121021829#Comment_121021829

    Frightening all the same!



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    #5
    Tenger
    Moderators, Motoring & Transport Moderators Posts: 9,883 Mod ✭✭✭✭Tenger


    https://www.boards.ie/discussion/2058310656/wake-turbulence

    More likely during take-off landing as physical separation is lower and traffic is higher. But its definitely possible mid-flight.

    EG. aircraft 10 KMs in front of you and flying above you, very low windspeed so any wake turbulence doesn't get disrupted by the ambient atmosphere. But a slight breeze "drops" the turbulent air 1-2000 feet lower. A few moments later, your aircraft flies right into it.



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    #6
    Buffman
    Registered Users Posts: 2,798 ✭✭✭Buffman


    One of the more recent 'Mayday/Air Disasters' episodes (S21E7) covered a USAF KC-135 that had 2 engines ripped off and almost crashed during the Gulf War. It was attributed to wake turbulence from another KC-135.

    FYI, if you move to a 'smart' meter electricity plan, you CAN'T move back to a non-smart plan.

    You don't have to take a 'smart' meter if you don't want one, opt-out is available.

    Buy drinks in 3L or bigger plastic bottles or glass bottles to avoid the DRS fee.



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    #7
    Sully
    Moderators, Education Moderators, Technology & Internet Moderators, Regional South East Moderators Posts: 24,056 Mod ✭✭✭✭Sully


    With such high risks I'd have thought some would be done to avoid it happening to be fair



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    #8
    HTCOne
    Registered Users Posts: 876 ✭✭✭HTCOne


    Wake turbulence separations are applied based on the size of the leading aircraft vs the ones following. Sometimes you can’t predict how far back the wake will actually persist for.



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    #9
    Tenger
    Moderators, Motoring & Transport Moderators Posts: 9,883 Mod ✭✭✭✭Tenger


    https://www.boards.ie/discussion/comment/121028786#Comment_121028786

    It's called minimum separation and it done 1000s of times a day.



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    #10
    Psychlops
    Registered Users Posts: 1,129 ✭✭✭Psychlops


    https://www.youtube.com/watch?v=ezV8EUuegik

    Saw this this week.



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    #11
    Hotblack Desiato
    Registered Users Posts: 35,057 ✭✭✭✭Hotblack Desiato


    This one didn't end so well (pilot OK)

    https://www.youtube.com/watch?v=tZLXMKMgnS8


    © 1982 Sinclair Research Ltd



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