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Thread: Flex Thrust - Increase in V-speeds (CRJ 900)
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Old 13th Jul 2016, 21:27
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dcoded
 
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Flex Thrust - Increase in V-speeds (CRJ 900)
Dear all,

I am flying on the CRJ and there is one question which I can't find an answer to.
We are using the Standard speedcards provided by bombardier, and runway analysis tables (provided as PDFs)

Now to my question.
When making a flex TO, with an assumed temp of, lets say 48 degrees.
According to the booklet I need to Inscrease V1 with around 4-5kt (depending on weight)
The Vr with around 4-5kts, and the V2, Decrease with -1kt or sometimes leave it unchanged (also depending on weight)

WHY do we need to increase the speeds UPWARDS to a higher value?

Can some-one shed some light on my confusion?

Thanks!
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