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  • Fins on engine cowlings

    Hi,
    Have alook at this picture:

    http://www.airliners.net/photo/Lufthansa/Airbus-A340-642/0596750/M/

    Here is mentioned that these fins are used to reduce turbulence, I would like to know more about these devices and why they put them on engine cowlings? Is there any major source of turbulence around the engines AND Does this method affect the sound polution made by the plane?( I heard this somewhere but still unsure about the truth?)

    Does Boeing use the sameway?

  • #2
    The DC-10 & MD-11 both use these devices (called Strakes) to control the airflow over the wing during high angles of attack. Noise reduction is not factor.
    Don
    Standard practice for managers around the world:
    Ready - Fire - Aim! DAMN! Missed again!

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    • #3
      Re:

      ^They're also present on the 767's engines as well as the CFMs on the 737 Classics.

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      • #4
        Mr Boeing calls them 'Chines'.

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        • #5
          Illjysin-62 have something similar on their engines.
          "The real CEO of the 787 project is named Potemkin"

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          • #6
            Originally posted by Alessandro View Post
            Illjysin-62 have something similar on their engines.
            They do?

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