ESI-500
Pilot’s Guide
3-2
Display Features
Pitch Ladder
The pitch ladder scale is
located in the center of the display with short
horizontal lines positioned at +/- 2.5° and +/-7.5°, medium horizontal
lines positioned every +/-5°, and long horizontal lines positioned every
+/- 10°. The pitch ladder rotates around the aircraft reference symbol
in relation to aircraft’s roll and scrolls up and down in response to the
aircraft’s pitch. The scale has a maximum pitch of +/- 90°.
Pitch tape chevrons are displayed such that at least one pitch tape
chevron, pointing towards the zero pitch line, is visible when the pitch
tape contains pitch value
s (less than or equal to -25°) or (greater than
or equal to 35°).
Roll Indicator
The roll indicator con
sists of a roll scale and a roll pointer. White scale
lines are set at +/- 10°, 20°, and 30°. Hollow triangles are set at 45°
and a solid downward white triangle representing the 0° mark. The roll
pointer is an upward pointing triangle located on the inner arc radius of
the roll scale. Release 1.3 and greater has white scale lines at +/- 60°
that come into view when the aircraft is in a roll.
The roll pointer can be configured to be fixed (scale moves) or
moveable (pointer moves). The roll pointer or roll scale /- 180°
around the aircraft reference symbol boresight.
Aircraft Reference Symbol
The aircraft reference symbol is fixed in the center of the display and
provides a reference to determine the aircraft’s pitch and roll. The
aircraft is at a zero degree pitch when the horizon line intersects the
aircraft reference symbol’s boresight.
Slip/Skid Indicator
The slip/skid indicator is l
ocated at the base of the roll pointer and
moves laterally with respect to the roll pointer proportionally to
lateral acceleration. The slip indicator is depicted as a trapezoid. A
displacement the width of the trapezoid (from the midpoint of the left
side to the midpoint of the right side) is approximately equivalent to
one ball displacement of a conventional inclinometer. For Release 1.1
the slip/skid indicator has a range of ±12°. For Release 1.2 the range is
configurable at installation for
±12° or ±7°
Attitude Invalidity
The pitch tape, roll scale, roll pointer, and slip/skid indicator are
removed from the display and replaced with an attitude failure message
“ATT FAIL” when invalid attitude data is detected. See Chapter 4 for
details.
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