What? That conference ended *today*!!?! How timely is that?

Quoting Nathan Bergey <nathan.ber...@gmail.com>:

I just found this gem of a paragraph in an abstract for a paper I can't get

Canards are attractive devices for guided missile control. They allow for a
compact size, a high degree of
maneuverability and low hinge moments. However, the use of canards as
control devices complicates the
rolling moment characteristics. As canards are deflected in pitch, roll,
and/or yaw, vortices emanating from the
canards stream aft and interact with the tail section which typically
induces an adverse rolling moment. *The adverse
rolling moment can result in a roll reversal if the induced roll from the
tail fins exceeds the direct canard roll control.*
Oftentimes, a roll mechanism is used in a canard-controlled system to
mitigate the adverse roll properties. This has
been accomplished with free-spinning tail sections and in the case of the
Sidewinder missile, with rollerons or...

Emphasis mine.


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