out. A couple of program mixes can be set up to bring
in some Up-Elevator to make the jet assume a positive
angle of attack, and to deploy the speed brakes. The
two mixers can then be assigned only to the 3rd Flight
Mode for landings. The Landing flap position can also be
associated with the third or Landing Flight Mode and the
Gyro gain can again be turned on to assist in a straight
roll-out during landing.
Many of the functions found in the X9503 2.4 system
are switch selectable (including programmable mixers)
and can be assigned to one or more Flight Modes. This
provides the ability to have 3 completely different aircraft
configurations that are selectable in flight using a
single switch.
Three Flight Modes are available in the X9503 2.4 system.
When activated, you can select them during flight by
using one of the two 3-position switches (FLAP Switch
or AUX2 switch). You decide which switch to use when
Flight Modes are activated in the Devic. SEL function in
the System menu. Once Flight Modes are activated, you
have a choice of using the Flight Mode switch to select up
to 3 Dual Rates and Exponential settings for each of the
primary controls (ELEV, AILE, RUDD), or Dual Rates and
Exponential settings may continue to be controlled by the
3 individual Dual Rate switches. However, when using the
standard D/R switches, there are only 2 settings possible
for each of the primary controls because the D/R switches
are only 2-position switches. All other functions that can
be activated by a switch can be assigned to 1 or more
Flight Modes when Flight Modes have been activated.
Decide if Flight Modes are to be activated.
If 3 sets of Dual Rates and Exponential settings are
desired for Elevator, Ailerons, and Rudder instead of
having only 2 sets available, then continue with the
following steps to activate Flight Modes.
If you want to gang Dual Rates for Aileron, Elevator and
Rudder together on a single switch, then continue with the
following steps to activate Flight Modes.
If you need to group multiple functions together in order
to perform certain tasks with the aircraft, then continue
with the following steps to activate Flight Modes. If it is
decided that Flight Modes are not to be activated, then
skip to SWITCH ASSIGNMENTS.
A Flight Mode represents an aircraft configuration (Dual
Rate/Expo, programmed mixes, Aileron Differential, Flap
System, Gyro System, etc.) designed and optimized to
assist the pilot and the aircraft in performing a specific
type of maneuver.
Programming Flight Modes provides the ability to flip
a switch to select a collection of settings optimized to
perform a maneuver. An aerobatic aircraft, for example,
may be set up such that the Flight Mode switch in its
first position configures the aircraft for normal precision
flying. Positioning the switch in its second position sets
the aircraft up for snap rolls. Positioning the switch in its
third position sets the aircraft up for consecutive rolls,
slow rolls, and rolling circles. The 3 Flight Modes could
just as easily represent aircraft settings for Takeoff, Flying,
and Landing for a turbine-powered jet aircraft. Thus Flight
Modes can make the pilot’s job easier by configuring the
aircraft to do different things by flipping a single switch.
For example, let’s consider a jet aircraft. The jet will utilize
3 Flight Modes - 1 for takeoffs, 1 for flying at high speed
and 1 for landing.
During takeoff, full control deflections are desired, with a
moderate amount of Exponential to assist in rotation and
control of the aircraft at takeoff speed. Steering should
have a lot of Exponential to avoid over-steering during
the takeoff roll. So for the first Flight Mode (FM0), Dual
Rates and Exponential curves are set for Ailerons and
Elevator to allow adequate control for rotation and control
at takeoff speed, while a high percentage of Exponential
is set for the rudder/steering to help prevent over-steering
during takeoff. If the aircraft is equipped with 3 position
Flaps (Retracted, Takeoff position and Landing position),
the Takeoff flap position can be assigned to only the first
Flight Mode to assist in takeoff. There may also be a Gyro
attached to the steering/rudder and the Gyro gain can be
turned on and associated with the Takeoff Flight Mode to
assist in keeping the aircraft straight during the takeoff
roll.
For normal flight at higher speeds, the second Flight
Mode (FM1) would be set up to have quite a bit of
Exponential and perhaps reduced control rates on all
control surfaces because a lot less control deflection is
required at high speeds. The retracted flap position would
also be assigned to this Flight Mode and the Gyro gain
could be reduced or turned off.
For landing, the third Flight Mode (FM2) would be set
up to use full control throws with a moderate-to-high
degree of Exponential to smoothly control the jet at lower
landing speeds and again have a lot of Exponential on
the rudder to prevent over-steering upon the landing/roll
1. From SYSTEM M. highlight and select Devic. SEL
using the Selector.
2. Highlight and select INH under FLIGHT MODE.
When selected, two options appear: AUX2 SW and
FLAP SW. Highlight and select the switch you will
use to select between Flight Modes while flying. The
example below shows that the FLAP switch has been
selected.
Once Flight Modes have been activated, 2 new parameters
appear on the display: TRIM:COM and D/R:SW.
Once one of the 3-position switches is selected, Flight
Mode 0 (FM0) is in effect when the switch is in the
upper position. Flight Mode 1 (FM1) is in effect when
the switch is in the middle position, and Flight Mode
2 (FM2) is in effect when the switch is moved to the
lowest position.
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