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Section 3 Display Symbology
1
st
Ed Nov 2018
IDU-450 EFIS Software Version 8.0H (Rotorcraft)
3-25
A diamond-shaped acceleration cue is centered on the gray dot to indicate
direction and magnitude of horizontal acceleration. Deviation of the dot in
a straight up direction (12 o’clock position) indicates forward flight while
straight down (6 o’clock position) indicates rearward flight. Deviation of the
dot laterally indicates lateral drift in that direction. The movement of the dot
is constrained to less than five knots per second to prevent jumpiness. The
example above shows drift, forward and slightly to the right (1 o’clock
position) at 20 knots groundspeed. (See § 3.7.2 for full hover vector
symbology with Hover page selected on MFD.)
NOTE:
In the event the bank scale was decluttered, it becomes uncluttered while
at low speed <30 knots groundspeed.
3.3.16. Bank Angle Scale
The bank scale and roll pointer are centered upon the large aircraft symbol
reference marks in basic or unusual attitude modes. When bank angle
scale decluttering is selected, the bank angle scale and sky pointer are
displayed when the bank angle exceeds 2.8°. With decluttering selected,
appearance of the bank angle scale and roll pointer are dampened based
upon magnitude and time to prevent nuisance appearances.
Figure 3-45: Bank Angle
When decluttering is not selected, bank angle scale and sky pointer appear
full time with level, 10°, 20°, 30°, 45°, and 60° marks on left and right sides.
The bank angle scale and roll pointer are centered upon the large aircraft
symbol reference marks (basic mode or unusual attitude mode).