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CFO0401002_009
APPROACH MODE (APPR)
In the approach mode, the FGC generates commands to track vertical guidance for ILS precision glideslope approaches or for FMS non-precision glide path (GP) approaches. Approach mode is selected by pushing the APPR button on the FGP.
GLIDESLOPE MODE
Glideslope is automatically selected when in approach mode, inbound, with a valid localizer as the lateral navigation source. Glideslope mode is cleared by deselection of approach mode. When armed, glideslope mode is also cleared by turn-ing outbound, or by loss of a valid localizer as the lateral navigation source. When captured, glideslope mode is cleared by changing the source of the lateral navigation source to anything other than a valid localizer.
Glideslope mode generates commands to capture and track glideslope. Captures can be performed from below or above the beam. The capture point is a function of the closure rate, with the capture point moving away from the beam for high closure rates. Capture will not occur if the localizer is not captured, or if the FGC is not receiving valid glideslope data.
Upon glideslope capture, other vertical modes are automatically cleared.
When the APPR capture occurs, the flight directors automatically change to independent mode. When the glideslope cap-tures are not concurrent and only one side has captured, vertical mode selection, PFD annunciation, etc. operate indepen-dently on the noncaptured side.
The GS mode is deselected when one of the following occur:
-Another mode is selected.
-Changing the active NAV source.
-VOR/LOC frequency is changed.
-By pressing APPR button again.
-Changing the XFR side when APPR is armed.
-The FDs are turned off while the AP disengages.
Glideslope arm is annunciated by the white GS message in the vertical (arm) field on the PFD.
May 06/2005 Flight Crew Operating Manual Volume 2 REV 2 CSP 100-6
04-01-19
FLIGHT DIRECTOR VERTICAL MODES (Cont)
GLIDEPATH MODE
This mode can be selected only by the FMS, as follows:
-While FCS is in the VNAV mode and approach mode
-FMS is the active Nav source
-No preselect Nav source is active
-FMS VNAV is valid
There is no button for glide path mode on the FGP. Glide path is automatically deselected/cleared by deselection of VNAV or approach modes or by selection or capture of another active vertical mode.
Glide path mode generates commands to track a vertical path, defined by the FMS.
Glide path capture disables use of the preselected altitude mode operation. Glide path arm is annunciated with a white GP in the vertical arm field of the PFD. Glide path capture is annunciated by the green GP in the vertical capture field on the PFD.
Volume 2 Flight Crew Operating Manual May 06/2005 CSP 100-6 REV 2
04-01-20 AUTOPILOT
DESCRIPTION
The Challenger 300 his equipped with a three axis digital fail-passive autopilot. Autopilot servos provide command inputs to the ailerons and elevators. The rudder is controlled by the yaw damper system. The coupled flight guidance computer provides the flight guidance signals to drive the servos. Both flight guidance computers must be operational for the auto-pilot to function.
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本文链接地址：庞巴迪挑战者300公务机机组操作手册 Bombardier Challenger-自动飞行控制系统(13)
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