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  • You're only considering the effect of wing blanking. It's much more complicated than that. Don't forget that the purpose of the fin is to yaw the aircraft back towards the relative airflow if a sideslip develops - and the secondary effect of yaw is roll.

    Those using BGS learning material...
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  • Ben W
    replied to Roll damping
    In a steady turn, we assume that there is no rate of roll, so the relative airflow over each wing will not be changing.
    But we will have to maintain a roll control input to hold the aircraft in a steady turn, otherwise the aircraft's stability will roll the wings level again. (All civil aircraft...
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  • Ben W
    replied to Qid 991420
    1) &2 ). The size of any of the forces created by an aerofoil in any circumstances depends on IAS (dynamic pressure), not TAS. (ATPdigital Lesson 2 page 9 para 4)

    3). It is the change in angle of attack of the wings for a given rate of rolling movement that will vary with TAS.
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  • Hi Omar,
    You've found a thread and a post dated more than 10 years ago!
    I am pretty sure that Dick learnt his Maths before calculators were invented. His use of sqrt2 appears to have come from the use of Pythagoras Theorem rather than a calculator to establish that Cos 45 is 0.707.
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Ben W
Ben W
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