On 2007-06-11 23:13:58 -0400, "Maxwell" said:


"Dudley Henriques" wrote in message
news:2007061121444816807-dhenriques@rcncom...
On 2007-06-10 22:41:49 -0400, "Maxwell" said:

That is either untrue, or real misleading. The Blues fly with a different
purpose, keep the aircraft on trajectory. When they are flying a knife
edge,
they are hardly coordinated, as with many other maneuvers.

A 1g barrel roll can be done, but the required trajectory of the aircraft
is
not going to be one that is necessarily eye pleasing for ground
demonstration purposes.

Actually, when the Blues or anyone else is in knife edge, they are indeed
in coordinated flight. You hold the aircraft in knife edge with top rudder
and forward neutral stick; this control pressure combination has to be
perfectly coordinated to maintain knife edge.
You are confusing coordinated with meaning the control pressures must be
complementary which is a common mistake often made.
The first lesson we teach in aerobatics is that "coordinated" has
absolutely nothing whatsoever to do with the controls not being crossed.
Actually, any good flight instructor will teach this to a new primary
student during the first hour of dual :-)
Dudley Henriques


Then define coordinated.

Surely.
Coordinated as that applies to control pressures while in flight
defines ANY application of controls in ANY DIRECTION where the pressure
applied to each individual control achieves a specific desired
resulting change in the flight path of the aircraft .
A non slipping or skidding ball centered turn entry or exit is a
coordinated control movement. In this case the control pressures
applied are in the same direction and uncrossed.
Conversely, a deliberate slip or a slow roll is also a coordinated
control movement resulting in a specific change and effect in the
flight path of the aircraft. In this case the controls are not applied
in the same direction and are said to be crossed.
Again, crossed controls does NOT mean uncoordinated.
Dudley Henriques