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Canard and prop wash

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  • Canard and prop wash

    How much of the canard's effectiveness comes from the prop wash going over and under that airfoil vs the airfoil's movement though the air?

    Why? Because I would like to know with an engine out how the handling characteristics change without the prop wash. Does the canard lose some, all, or no effectiveness if the engine quits, and what happens to the stall speed, approach angle/sight picture?

    I am a low hour VFR PPL considering a Kenai as a first purchase, and for the reason above might consider a BRS chute (if a canard + engine out scenario is different enough from what I'd be accustomed to normally handling and seeing in the plane on landing, I might pull a chute...you thousands hours, back country, IFR, commercial guys might be able to use your experience to make this a non-issue). The wife factor and incapacitated pilot scenario has not been taken into account yet either.

  • #2
    Prop wash

    Very good question! I don't know the answer but I would think the prop wash has at least a minor effect on the stall speed.

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    • #3
      Originally posted by Aggie92 View Post
      How much of the canard's effectiveness comes from the prop wash going over and under that airfoil vs the airfoil's movement though the air?

      Why? Because I would like to know with an engine out how the handling characteristics change without the prop wash. Does the canard lose some, all, or no effectiveness if the engine quits, and what happens to the stall speed, approach angle/sight picture?

      I am a low hour VFR PPL considering a Kenai as a first purchase, and for the reason above might consider a BRS chute (if a canard + engine out scenario is different enough from what I'd be accustomed to normally handling and seeing in the plane on landing, I might pull a chute...you thousands hours, back country, IFR, commercial guys might be able to use your experience to make this a non-issue). The wife factor and incapacitated pilot scenario has not been taken into account yet either.
      I owned two 260se/stol then a 260 hp Katmai with BRS from 2007 until I stopped flying in 2013; total time in Todd's airplanes about 1400 hr. Feel free to contact me at moore dot kw at gmail dot com if you want to talk about canard + propwash and the pros and cons of BRS.
      Kevin Moore
      Former 260se/stol Katmai with BRS owner; planeless for now
      sigpic

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      • #4
        Thanks Kevin. I will reach out.

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