Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
ED [<strong>DCS</strong> USER MANUAL]<br />
Steering Modes<br />
TO FROM DIRECT TO TO SCS<br />
HSI course deviation<br />
indicator indicates<br />
deviation from the<br />
course passing through<br />
the steerpoint at the<br />
heading selected using<br />
HSI COURSE SET knob.<br />
When 3D mode is<br />
selected, ADI glide slope<br />
indicator indicates<br />
vertical deviation from a<br />
line passing through the<br />
selected steerpoint at a<br />
computed or manually<br />
entered vertical angle.<br />
HSI course deviation<br />
indicator indicates deviation<br />
from course computed by<br />
CDU from the aircraft<br />
position at the moment<br />
DIRECT was selected to the<br />
selected steerpoint; or,<br />
when DIRECT is the<br />
selected steer mode, the<br />
course from the aircraft<br />
position when a new<br />
steerpoint is selected to the<br />
new steerpoint. When 3D<br />
mode is selected, ADI glide<br />
slope indicator indicates<br />
vertical deviation from a<br />
line connecting the aircraft<br />
position at the moment<br />
DIRECT was selected, or a<br />
new steerpoint is selected,<br />
to the selected steerpoint<br />
(computed vertical angle)<br />
or manually entered vertical<br />
angle.<br />
HSI course deviation<br />
indicator indicates<br />
deviation from course from<br />
the From point to present<br />
steerpoint (computed by<br />
CDU). When 3D mode is<br />
selected, ADI glide slope<br />
indicator indicates vertical<br />
deviation from a line<br />
connecting the From point<br />
to the current steerpoint<br />
(computed vertical angle)<br />
or manually entered<br />
vertical angle.<br />
HSI course deviation indicator indicates<br />
deviation from the course selected using<br />
HSI COURSE SET knob. When 3D mode<br />
is selected, ADI glide slope indicator<br />
indicates vertical deviation from a line<br />
passing through the position at the<br />
moment SCS was selected at a<br />
computed or manually entered vertical<br />
angle. If a vertical angle is not entered,<br />
the vertical angle defaults to 0 degrees.<br />
NOTE<br />
When ANCHR is selected, the SCS steer<br />
mode can not be selected on the<br />
ATTRIB Page (SCS LSK is inactive).<br />
If the SCS steer mode has been selected<br />
and then ANCHR is selected on the<br />
NMSP, the SCS mode is automatically<br />
deselected and steering cues are<br />
provided to the anchor point. These<br />
steering cues are determined by the<br />
attributes of the waypoint that is the anchor<br />
point.<br />
Vertical Nav (2D/3D) Mode Selection<br />
The EGI provides both two- and three-dimensional (2D and 3D) vertical navigation<br />
modes for driving the HSI and the ADI. When the 3D mode is selected, a manually<br />
entered or computed vertical angle can be selected. The 2D/3D vertical navigation<br />
(VNAV MODE) and vertical angle (VANGLE) modes are waypoint and/or flight plan<br />
specific attributes. The VNAV MODE and VANGLE attributes displayed on the Attributes<br />
(ATTRIB) Page or Waypoint (WAYPT) Page 2/2 are waypoint specific. The VNAV MODE<br />
and VANGLE attributes displayed on the Waypoint Attributes (WPTATT) Page are flight<br />
plan specific. The waypoint specific VNAV MODE and VANGLE attributes are<br />
entered/changed using the ATTRIB Page or WAYPT Page 2/2<br />
In the TO FROM and 2D mode, horizontal guidance is provided to a line passing through<br />
the steerpoint at the magnetic heading selected using the HSI course set knob and as<br />
indicated by the HSI course arrow and course selector window and the HSI SET AT CRS:<br />
field on the CDU ATTRIB Page.<br />
In the TO FROM, 3D, and COMPUTED mode, vertical guidance is provided to a line at<br />
the vertical angle determined by the line passing through the steerpoint (at selected<br />
magnetic heading) to the altitude of the aircraft when the TO FROM mode was selected.<br />
In the TO FROM, 3D, and <strong>EN</strong>TERED mode, vertical guidance is provided to a line<br />
passing through the steerpoint at the manually entered vertical angle.<br />
137 <strong>DCS</strong> USER MANUAL
Change language