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Implementing VNAV support in FlightGear: Difference between revisions
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Implementing VNAV support in FlightGear (view source)
Revision as of 19:32, 2 December 2013
, 2 December 2013→The Performance Database
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The PDB is derived from the IFP aircraft databases. Slight simplifications were taken into account because of the limited size of the FMS memory. For example, only one air conditioning setting is available (LO/ECON as appropriate). Per design, the aircraft performance databases are stored in the FMS Perf Data | The PDB is derived from the IFP aircraft databases. Slight simplifications were taken into account because of the limited size of the FMS memory. For example, only one air conditioning setting is available (LO/ECON as appropriate). Per design, the aircraft performance databases are stored in the FMS Perf Data | ||
Base (PDB). There is only a single PDB per family of aircraft. | Base (PDB). There is only a single PDB per family of aircraft. | ||
At the center of the FMS functionality is the flight plan construction and subsequent construction of the four-dimensional aircraft trajectory defined by the specified flight plan legs and constraints and the aircraft performance. Flight plan and trajectory prediction work together to produce the four-dimensional trajectory and consolidate all the relevant trajectory information into a flight plan/profile buffer. | |||
{{Appendix|all| | {{Appendix|all| | ||
* {{cite web |url=http://www.davi.ws/avionics/TheAvionicsHandbook_Cap_15.pdf |title=The Avionics Handbook: Flight Management Systems | author=Randy Walter (Smith Industries) }} | * {{cite web |url=http://www.davi.ws/avionics/TheAvionicsHandbook_Cap_15.pdf |title=The Avionics Handbook: Flight Management Systems | author=Randy Walter (Smith Industries) }} | ||
}} | }} | ||
== Problem == | == Problem == | ||
In comparison with other flight simulators, FlightGear has been lacking support for simulating VNAV features found on many modern aircraft since day one. | In comparison with other flight simulators, FlightGear has been lacking support for simulating VNAV features found on many modern aircraft since day one. | ||