On Wed, 11 Feb 2004 10:23:18 -0500, Todd Pattist
wrote:

Jim wrote:

(Chris OCallaghan) wrote:
I'm having some trouble visualizing this.

Is it possible that Sammy has posited a reference frame that looks
only at AOA,

I think he's looking at the ground reference. If an
aircraft is making a pure level skidding turn, it's turning
in yaw only.

I had never thought of this. Will an aircraft actually turn, that is,
change its direction of flight, if it is not allowed to bank at all?
I know that a clumsy kind of turn might be accomplished by use of
rudder only but I thought that was because the yaw would eventually
lead to a bank - due to the increased lift of the 'outer' wing caused
by the yaw.


If it's rolled knife edge in the level turn,
it's making a pure pitching turn. If it's pointed straight
down (Mike's "vertical barrel roll") it's making a pure
rolling turn. Different banks and descent/climb rates from
the level turn produce the combinations of the above that
Sammy describes.

Todd Pattist - "WH" Ventus C
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