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Old 28th Aug 2018, 05:04
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Judd
 
Join Date: Oct 2007
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But extra drag during the roll ... No, not in any significant way.
I would treat that statement with caution since it may depend on aircraft type. With the 737, excessive aileron during a crosswind take off, especially after 100 knots, gives significant drag and thus extra runway used. The FCTM warns against this by saying large control inputs can have adverse effect on directional control near V1 (MCG) due to the additional drag of the extended spoilers. As spoiler deployment increases, drag increases, and lift is reduced which results in reduced tail clearance, a longer take off roll and slower airplane acceleration
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