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V-Ref Speeds

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  • Spad13
    replied
    Originally posted by Gabriel View Post
    Don't you add to that 5kts or (50% of the headwind component + 100% of the gust increment), whichever is greater?
    That depends on the aircraft and the operator, but, in any case, the original question was how the charted Vref number is arrived at. Nehal wasn't asking how/when it's tweaked.

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  • Gabriel
    replied
    Originally posted by LRJet Guy View Post
    That IS the formula. Vref = 1.3*Vso. Vso is the stall speed when configured for landing. (basically)
    Don't you add to that 5kts or (50% of the headwind component + 100% of the gust increment), whichever is greater?

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  • LRJet Guy
    replied
    That IS the formula. Vref = 1.3*Vso. Vso is the stall speed when configured for landing. (basically)

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  • C-FMWQ
    replied
    Originally posted by Dmmoore View Post
    While it is formula driven, 99.9% of all airline pilots use charts.
    Originally posted by Spad13 View Post
    The very rough formula is that Vref is roughly 130% of the stall speed at that weight and in that config. But yes, we use charts.
    Well I was wondering what the formula was since I watched a Mayday episode and they did the calculation.

    Thanks Nehal

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  • Spad13
    replied
    The very rough formula is that Vref is roughly 130% of the stall speed at that weight and in that config. But yes, we use charts.

    Leave a comment:


  • Dmmoore
    replied
    Originally posted by C-FMWQ View Post
    Hi, I am really board and know that pilots usually calculate the v-ref speeds for and airplane, but does anyone know the formula?

    Thanks Nehal
    While it is formula driven, 99.9% of all airline pilots use charts.

    Leave a comment:


  • C-FMWQ
    started a topic V-Ref Speeds

    V-Ref Speeds

    Hi, I am really board and know that pilots usually calculate the v-ref speeds for and airplane, but does anyone know the formula?

    Thanks Nehal
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