A321 With toothed exhaust CFM56?












3












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I stumbled upon a wiki picture and I saw a something that I have not seen before: a CFM56 with toothed engine exhaust. Can someone explain to me what engine variant that is? Thanks.



enter image description here






jet-engine







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Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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  • $begingroup$
    Interesting picture. Welcome to Av.SE!
    $endgroup$
    – Ralph J
    3 hours ago










  • $begingroup$
    Usually the "teeth" are meant to reduce noise levels, up to a couple dB.
    $endgroup$
    – Pheric
    2 hours ago










  • $begingroup$
    That is a very special add-on. I guess you learn something new every day.
    $endgroup$
    – Miyo Hazuki
    2 hours ago
















3












$begingroup$


I stumbled upon a wiki picture and I saw a something that I have not seen before: a CFM56 with toothed engine exhaust. Can someone explain to me what engine variant that is? Thanks.



enter image description here






jet-engine







share|improve this question









New contributor




Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$












  • $begingroup$
    Interesting picture. Welcome to Av.SE!
    $endgroup$
    – Ralph J
    3 hours ago










  • $begingroup$
    Usually the "teeth" are meant to reduce noise levels, up to a couple dB.
    $endgroup$
    – Pheric
    2 hours ago










  • $begingroup$
    That is a very special add-on. I guess you learn something new every day.
    $endgroup$
    – Miyo Hazuki
    2 hours ago














3












3








3





$begingroup$


I stumbled upon a wiki picture and I saw a something that I have not seen before: a CFM56 with toothed engine exhaust. Can someone explain to me what engine variant that is? Thanks.



enter image description here






jet-engine







share|improve this question









New contributor




Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$




I stumbled upon a wiki picture and I saw a something that I have not seen before: a CFM56 with toothed engine exhaust. Can someone explain to me what engine variant that is? Thanks.



enter image description here






jet-engine




jet-engine






share|improve this question









New contributor




Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.











share|improve this question









New contributor




Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









share|improve this question




share|improve this question








edited 3 hours ago









Ralph J

28.1k685146




28.1k685146






New contributor




Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.









asked 3 hours ago









Miyo HazukiMiyo Hazuki

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162




New contributor




Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.





New contributor





Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.






Miyo Hazuki is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.












  • $begingroup$
    Interesting picture. Welcome to Av.SE!
    $endgroup$
    – Ralph J
    3 hours ago










  • $begingroup$
    Usually the "teeth" are meant to reduce noise levels, up to a couple dB.
    $endgroup$
    – Pheric
    2 hours ago










  • $begingroup$
    That is a very special add-on. I guess you learn something new every day.
    $endgroup$
    – Miyo Hazuki
    2 hours ago


















  • $begingroup$
    Interesting picture. Welcome to Av.SE!
    $endgroup$
    – Ralph J
    3 hours ago










  • $begingroup$
    Usually the "teeth" are meant to reduce noise levels, up to a couple dB.
    $endgroup$
    – Pheric
    2 hours ago










  • $begingroup$
    That is a very special add-on. I guess you learn something new every day.
    $endgroup$
    – Miyo Hazuki
    2 hours ago
















$begingroup$
Interesting picture. Welcome to Av.SE!
$endgroup$
– Ralph J
3 hours ago




$begingroup$
Interesting picture. Welcome to Av.SE!
$endgroup$
– Ralph J
3 hours ago












$begingroup$
Usually the "teeth" are meant to reduce noise levels, up to a couple dB.
$endgroup$
– Pheric
2 hours ago




$begingroup$
Usually the "teeth" are meant to reduce noise levels, up to a couple dB.
$endgroup$
– Pheric
2 hours ago












$begingroup$
That is a very special add-on. I guess you learn something new every day.
$endgroup$
– Miyo Hazuki
2 hours ago




$begingroup$
That is a very special add-on. I guess you learn something new every day.
$endgroup$
– Miyo Hazuki
2 hours ago










1 Answer
1






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oldest

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4












$begingroup$

The “toothed” exhaust are called Chevrons and they reduce noise. They are an option on CFM56 equipped A321 aircraft.



Wikipedia CFM International CFM56



”GE and Snecma also tested the effectiveness of chevrons on reducing jet noise. After examining configurations in the wind tunnel, CFMI chose to flight-test chevrons built into the core exhaust nozzle. The chevrons reduced jet noise by 1.3 perceived loudness decibels during takeoff conditions, and are now offered as an option with the CFM56 for the Airbus A321”






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    1 Answer
    1






    active

    oldest

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    1 Answer
    1






    active

    oldest

    votes









    active

    oldest

    votes






    active

    oldest

    votes









    4












    $begingroup$

    The “toothed” exhaust are called Chevrons and they reduce noise. They are an option on CFM56 equipped A321 aircraft.



    Wikipedia CFM International CFM56



    ”GE and Snecma also tested the effectiveness of chevrons on reducing jet noise. After examining configurations in the wind tunnel, CFMI chose to flight-test chevrons built into the core exhaust nozzle. The chevrons reduced jet noise by 1.3 perceived loudness decibels during takeoff conditions, and are now offered as an option with the CFM56 for the Airbus A321”






    share|improve this answer









    $endgroup$


















      4












      $begingroup$

      The “toothed” exhaust are called Chevrons and they reduce noise. They are an option on CFM56 equipped A321 aircraft.



      Wikipedia CFM International CFM56



      ”GE and Snecma also tested the effectiveness of chevrons on reducing jet noise. After examining configurations in the wind tunnel, CFMI chose to flight-test chevrons built into the core exhaust nozzle. The chevrons reduced jet noise by 1.3 perceived loudness decibels during takeoff conditions, and are now offered as an option with the CFM56 for the Airbus A321”






      share|improve this answer









      $endgroup$
















        4












        4








        4





        $begingroup$

        The “toothed” exhaust are called Chevrons and they reduce noise. They are an option on CFM56 equipped A321 aircraft.



        Wikipedia CFM International CFM56



        ”GE and Snecma also tested the effectiveness of chevrons on reducing jet noise. After examining configurations in the wind tunnel, CFMI chose to flight-test chevrons built into the core exhaust nozzle. The chevrons reduced jet noise by 1.3 perceived loudness decibels during takeoff conditions, and are now offered as an option with the CFM56 for the Airbus A321”






        share|improve this answer









        $endgroup$



        The “toothed” exhaust are called Chevrons and they reduce noise. They are an option on CFM56 equipped A321 aircraft.



        Wikipedia CFM International CFM56



        ”GE and Snecma also tested the effectiveness of chevrons on reducing jet noise. After examining configurations in the wind tunnel, CFMI chose to flight-test chevrons built into the core exhaust nozzle. The chevrons reduced jet noise by 1.3 perceived loudness decibels during takeoff conditions, and are now offered as an option with the CFM56 for the Airbus A321”







        share|improve this answer












        share|improve this answer



        share|improve this answer










        answered 2 hours ago









        Mike SowsunMike Sowsun

        18.9k26280




        18.9k26280






















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