초록 ▼

An improved aircraft flight management system includes a flight management computer (FMC), left and right control display units (CDU's) and a backup CDU. A triple redundant digital databus links the FMC and three CDU's. Upon detecting a failure in either the left or right CDU, the FMC utilizes recon

An improved aircraft flight management system includes a flight management computer (FMC), left and right control display units (CDU's) and a backup CDU. A triple redundant digital databus links the FMC and three CDU's. Upon detecting a failure in either the left or right CDU, the FMC utilizes reconfiguration rules stored in a look-up table to automatically cause the backup CDU to replace the failed CDU in operation, thereby relieving the flight crew of the burden of interfacing to the FMC through only one CDU. Upon detection of a failed databus, the system similarly utilizes structured data routing to reconfigure around the failed databuses. In addition, if any two CDU's have failed in a three CDU system, automatic data rerouting is implemented to the non-failed CDU to insure FMC to CDU communication.

대표청구항 ▼

[ What is claimed is:] [1.] In an aircraft flight management system including at least one flight management computer (FMC), at least two control display units (CDU's) and at least two databuses permitting interfaces to said CDU's from said FMC, the improvement comprising:logic control means associa

[ What is claimed is:] [1.] In an aircraft flight management system including at least one flight management computer (FMC), at least two control display units (CDU's) and at least two databuses permitting interfaces to said CDU's from said FMC, the improvement comprising:logic control means associated with said at least one FMC for:a) automatically detecting failure of one of said CDU's or one of said databuses and responsive thereto,b) utilizing structured data routing to predeterminedly reroute signals over a non-failed databus to connect a non-failed CDU to the FMC in a manner to minimize flight crew impact as a result of a failure, the rules for the structured data routing being set forth in a predetermined look-up table which includes a hierarchy of reconfiguration scenarios based on the possible failures of the CDU's or databuses.