User Manual

AIL DIFF. – AILERON DIFFERENTIAL
When ailerons are deflected, the aileron that deflects downward typically creates more drag than
the aileron that deflects upward. If the difference in drag is great enough it will cause the aircraft
to yaw in the direction of the down aileron, i.e. a roll to the right will case the aircraft to yaw to
the left because the left aileron deflects downward and creates more drag. This, of course, is an
undesirable tendency that results in non-axial rolls and a loss of heading.
The XP9303 provides an Aileron Differential function that allows adjustment of the aileron that
deflects downward without affecting the aileron that travels upward and therefore can eliminate
yaw tendencies in rolling maneuvers. It can also affect only the aileron that travels upward – this
is called negative differential and is useful if an aircraft yaws in the same direction as the aileron
input.
Aileron differential is available in the FUNCTION List only if the FLAPERON Wing Type is
selected in the Wing Type function in the SYSTEM Menu or when a Dual channel has been
assigned to Ailerons in the Wing TYPE function.
The Aileron Differential function provides for 2 differential settings that are switch or Flight
Mode selectable. One setting is associated with Pos0 and the other is associated with Pos1. The 2
settings can be combined in different ways to provide one setting that is on all of the time, or one
setting that is on and one that is off (0 differential), or 2 different amounts of differential --
maybe one for normal flying and another for flat spins.
To access the Aileron Differential function, highlight and select AIL Diff. in the FUNCTION List
to obtain the Aileron Differential display.
[AIL Diff.]
Pos0: LIN Pos1 LIN
Position 0
Differential. LIN =
No Differential.
Position 1
Differential. LIN =
No Differential.
Function
Name
ENT
LIST
CLR
FM0 FM1 FM2 AIL GER RUD MIX
POS1
POS0
Throttle can
also be used
to switch Ail
Diff on and off.
THRO
STK
INH
Switches that can be used to turn Aileron
Differential On and OFF or to Select
between 2 differential settings
Position 0 & Position 1 – (Aileron Differential)
The Aileron Differential function provides for 2 differential settings (Pos0 and Pos1) that
are switch or Flight Mode selectable. The 2 settings can be combined in different ways to
provide one setting that is on all of the time, or one setting that is on and one that is off
(Differential set to LIN), or 2 different amounts of differential—maybe one for normal
flying and another for flat spins.
If Pos0 is left at LIN indicating no differential and a percentage is set for Pos1, then
Aileron Differential may be switched On and Off. If a percentage is set for both
JR XP9303 Detailed Function Descriptions 67