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seen Jan 14 '13 at 21:09

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comment What causes an aircraft to roll when rudder is applied
Wow, there's some great comments on here - thanks guys! Really helpful in thinking through this! You lot even got me to design and cut-out my own swept-wing tailless aircraft from a piece of paper during a boring meeting today. It even flies, though it's hard to tell the difference between roll moment from rudder-induced yaw, and that from bent wings caused by clumsy fingers :-D
Jan
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awarded  Editor
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11
comment What causes an aircraft to roll when rudder is applied
I edited the question to clarify that I'm talking about light aircraft, and to add the secondary question "does the dihedral have anything to do with this effect"
Jan
11
revised What causes an aircraft to roll when rudder is applied
added 71 characters in body
Jan
11
comment What causes an aircraft to roll when rudder is applied
Right... perhaps I should have mentioned that I have your typical light aircraft in mind. I believe that these normally do have a dihedral angle. I just scanned the wiki page on aircraft modes you refer to, and what I understand from there, is that a dihedral should damp out that effect?
Jan
11
comment How can the Moon have such a strong effect on the ocean?
Although I think this is alluded to, it isn't really explained why lakes have such small tides then. Or, take an extreme case - my coffee does not show tide variances of ~0.6m. Thankfully! :-)
Jan
11
comment What causes an aircraft to roll when rudder is applied
I'm not sure I'm convinced: While the aircraft is yawing, i.e. while the nose's compass heading is changing, the wings will have different speeds, and therefore one will generate more lift. However, this condition (different wing speeds) only lasts a few seconds, yet the roll continues? To me it seems like this will account for only a portion of the roll.
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asked What causes an aircraft to roll when rudder is applied
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