Leerjet 35/36 Developed for Training Purposes 4A-11
February 2007
Avionics
Automatic Direction Finder
The Collins ADF-60 receiver and 614L-13 control head are part
of the automatic direction finder (ADF) system providing rela-
tive bearing between the aircraft and the selected ground sta-
tion. It operates in the 190 to 1749.5 kHz frequency range with
0.5 kHz frequency spacing. This range and spacing allows
3,120 possible, distinct frequencies.
Radio Magnetic Indicator
Two radio magnetic indicators, pilot’s and copilot’s, display air-
craft heading by a rotating compass card. Also, VOR and ADF
bearing information is displayed.
The pilot’s RMI receives heading information from the copilot’s
compass system and from navigational information from both
VHF navigational receivers, as well as, the No.1 and No.2 ADF
receiver, if installed. The copilot’s RMI receives heading infor-
mation from the pilot’s compass system and from navigational
information from both VHF navigational receivers, as well as,
the No.1 and No.2 ADF receiver, if installed.
Automatic Flight Control System
Automatic flight control systems (AFCS) combine the functions
of an autopilot, flight director, yaw damper, and elevator trim
system to provide automatic flight path and attitude control
through the pitch, roll, and yaw axes. Various subsystems of a
typical AFCS include:
Q
autopilot system
Q
flight director system
Q
flight instrumentation
Q
navigation sensors.
Supplied with inputs from these subsystems, the AFCS gener-
ates the appropriate pitch, roll, and yaw commands or cues to
fly the aircraft from its actual attitude to a desired attitude.
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