8565e887db
"For more than a month, I have been working with Torsten Dryer to model these three autopilots that are very common in aircraft manufactured in the 1960s through the late 1980s. The Altimatic IIIc in the SenecaII is a variation on the Century III and uses the same nasal model."
49 lines
2.2 KiB
Text
49 lines
2.2 KiB
Text
README.txt
|
|
|
|
The Century III autopilot model is the joint effort of Torsten Dreyer (3D model)
|
|
and Dave Perry (Aircraft/Generic/century3.nas, and Systems/CENTURYIII.xml).
|
|
The model and cascaded PID controller design attempt to recreate the performance
|
|
and pilot interface described in
|
|
|
|
CENTURY(R) FLIGHT SYSTEMS, INC.
|
|
|
|
CENTURY III
|
|
AUTOPILOT FLIGHT SYSTEM
|
|
PILOT'S OPERATIONG HANDBOOK
|
|
NOVEMBER 1998, 68S25
|
|
|
|
This manual is available free as a pdf download from www.centuryflight.com.
|
|
|
|
Piper Aircraft used this autopilot relabled as the Altimatic IIIc from the mid
|
|
1960's through the mid 1980's. The Century III is used by the pa24-250 and the Altimatic IIIc is used by the SenecaII in FlightGear.
|
|
|
|
From a pilot's point of view, there is one significant difference between the Century III and the Altimatic IIIc. The Altimatic IIIc couples to the HSI needle so the heading bug has no affect in modes other than HDG. With the Century III, the D.G. heading bug must be aligned with the NAV1 Omni Bearing Selector for the coupled modes Nav, and OMNI to function properly, and to the localizer bearing for LOC NORM mode to work properly. For proper functioning in LOC REV mode, the heading bug should be set to the back course bearing (180 deg from the LOC bearing).
|
|
|
|
Both use the nasal file
|
|
|
|
Aircraft/Generic/century3.nas
|
|
|
|
and the following xml files:
|
|
|
|
Aircraft/Instruments-3d/Century-III/AutopilotMode.xml,
|
|
Aircraft/Instruments-3d/Century-III/AutopilotModePanel.xml, and
|
|
Aircraft/Instruments-3d/Century-III/AltimaticIIIcPanel.xml.
|
|
|
|
Because the 3d models differ, the Century III requires a model entry for
|
|
|
|
Aircraft/Instruments-3d/Century-III/CenturyIII.xml
|
|
|
|
and the Altimatic IIIc requires a model entry for
|
|
|
|
Aircraft/Instruments-3d/Century-III/AltimaticIIIc.xml
|
|
|
|
as well as the additional nasal link to the hsi
|
|
|
|
hsiBugError.nas.
|
|
|
|
See the SenecaII/Nasal/hsiBugError.nas for an example.
|
|
|
|
Additionally, the autopilot config files are different because of this heading bug difference. See the /Systems/CENTURYIII.xml files for the pa24-250 and the SenecaII for examples of both.
|
|
|
|
|
|
|