Meggitt 60-2, Руководство по эксплуатации

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2nd Ed: Nov 01, 01 4-27
SYS 60-2 POH
4.3.2 Two Cue
This system, also known as an Attitude Director Indicator (ADI), is
automatically activated when the autopilot is engaged. Activation is
indicated by illumination of the FD annunciator.
This system contains a vertical steering bar for roll commands, and a
horizontal steering bar for pitch commands. It also includes an FD flag
which is displayed when the roll steering bar is not active. This system
allows split axis operation so flight in roll axis by itself is available. The
horizontal pitch steering bar is biased out of view when the AP Master
Switch is on, until a pitch mode is activated. A remote parallax adjustment
is provided to change the height of the pitch steering bar for different
seat heights. A remote switch allows manual flight control via Flight
Director commands.
Proper flight director technique for a Two Cue steering presentation
requires the pilot to roll and pitch the aircraft toward the steering bars
until they are centered, indicating that commands have been met.
For example, if the vertical (roll) bar is left, and the horizontal (pitch) bar
is up, the aircraft is below the desired attitude, or horizon, and right of
desired course, or centerline. A left bank and a pitch up attitude is dictated.
As bank angle and vertical speed approach desired values, the bars will
move to the center, or "crossed-hair" position. At this point, commands
have been satisfied. Thereafter, it is necessary only to maneuver the
aircraft to keep the bars centered in order to accurately fly programmed
modes.
It should be noted that accurate Flight Director operation demands that
the pilot stay alert to the movement of the steering bars, and to maneu-
ver the aircraft in a timely and smooth manner to satisfy the bar com-
mands.
Proper use of a Flight Director System makes flying much more precise
and less burdensome because of the computed display.
4.4 Yaw Damper/Rudder Trim System (Optional)
The S-TEC accelerometer controlled yaw damper/rudder trim system
substantially improves autopilot performance, as it senses both yaw
and slip in a single sensor. It also contains a trim potentiometer that
allows centering of the turn and slip ball. It replaces the commonly used
rate gyro with a sensitive accelerometer. The S-TEC system offers two
modes of operation:
1. Auto, which automatically activates when the autopilot is
engaged.
2. ON, which permits operation whether or not the autopilot is
in use.
It also provides a three position switch, which lets the pilot select AUTO,
ON, or Off positions.