Orma and netters
First off lift is NOT created by a tugging of the wing panel up into the air.
It is created by a combination of the deflected air PUSHING the bottom wing
panel up (Newton's Law) and the airflow being increased over the top creating a
pressure differential from under to over causing the air on the bottom to push
up into the now low pressure area above the wing (Bernoulli's Law). The only
force "sucking" on the wing skin is the small semi-vacuum created by the low
pressure area of the airflow over the upper wing. Negative Gs are simulated by
adding weight to the UPPER wing panel, simulating the reverse G force hence
negative of the wing attempting to produce lift downward in relationship to the
pilot. Positive Gs are tested with the wing inverted, simulating the increased
lifting force beyond 1G that is created when one increases the load on the wing
during say a steep turn, pull-up, snap roll, etc... 1G is created when the
aircraft is in equilibrium in straight and level flight, and this is increased
when you decide to make a turn, which you can feel is the force pulling down on
you during the maneuver. You have increased the amount of lift required over
straight and level because now you are "borrowing" some other lift for straight
and level to apply in the direction of the turn, so to remain level, lift must
increase. There is a good chart in the Airplane Flying Handbook which
illustrates very clearly the increasing Gs for the angle of bank of a given
"level" non descending coordinated turn. Orma you are right, that the outside
wing increases lift, with the down application of aileron, while the inboard
wing decreases lift, each having an associated change in drag which causes
adverse yaw. Application of the rudder is used to correct the adverse yaw. In
the KR the differential ailerons, those that deflect up different from down,
"tunes" out most of this adverse yaw for us making it simpler to fly
coordinated.
The confusion may have come from looking at drawing that illustrate the lift
"vectors" which are showing the resulting forces, and their direction of
action, and misinterpret this to mean that that is where the force originates
from.
2 Books for further reading that will enhance a pilot's understanding, and
should be read completely, are the Pilot's Handbook of Aeronautical Knowledge,
and the Airplane Flying Handbook. Both available at any decent pilot store,
King School and Sportys Catalog and online ordering. They run about $14.95 each
and will answer most of these questions in greater detail. If anyone has any
other pilot questions like this, or related to flying, e-mail off the net and I
will be glad to discuss them with you.
FLY SAFE!!!
Colin & Bev Rainey
KR2(td) N96TA
Sanford, FL
crain...@cfl.rr.com
http://kr-builder.org/Colin/index.html
