

Navigation Radios
The Navigation radio models the ability to tune and receive VOR or NDB information and display the raw data on the displays and pass back positional data to the FMGS. The data set for the station data contains information about the reception range of each station, which sis used to determine if reception is possible. Line Of Sight calculations are used to determine the current range to station. Terrain occultation is not done.
Lights
The Light model computes the lighting discretes that would be needed by a visual interface. It also provides the electrical loading input to the electrical system. The overhead light switches are used as input.
Flap control unit
This model encompasses the flaps, slats and their respective drive mechanisms and control unit. the model computes flap load relive and schedules the flaps according to the flap handle setting and the aircraft POF. The model responds correctly to hydraulic supply availability of the Green and Yellow systems. The model also interfaces with the Flight Controls System to produce the Alpha Lock function.
ECAM, FWC, SDAC etc
The simulation uses a central warning system model which ultimately produces the
ECAM messages on the EWD and auto-
Display System
To allow for the possibility of using other displays systems and in accordance to
the hardware design, the whole of the interface to the PFD, ND, EWD and System displays
is performed in one model. This one model collects the data from the simulated avionics
buses and discrete information from the models and packages the information ready
to send on Ethernet to any other PC capable of producing a Display. Each Display
data is a single package. Each display system package has a header indicating the
type of display and therefore allows the end user to interrupt the package data.
In this way the physical left ND can show the left PFD, simply by changing the data
package. For some displays, there are various "pages" such as the system display
and the Navigation Display. The Page header information within the data package allows
the end user to interpret the information correctly. thus there is only one ND data
package sent (to each side), but it may contain the VOR, or Plan information depending
upon the knob selection in the cockpit. Pilot and Co-
Doors
There is a simple model of the doors to allow the Doors Page on the system Display and the pressurisation model to function.
