초록 ▼

A flight data recording system includes a digital flight data recorder (DFDR) and a digital flight data acquisition unit (DFDAU) having a signal processor and nonvolatile memory for storing signals representative of a deterministic flight mode algorithm which defines a generic aircraft flight profil

A flight data recording system includes a digital flight data recorder (DFDR) and a digital flight data acquisition unit (DFDAU) having a signal processor and nonvolatile memory for storing signals representative of a deterministic flight mode algorithm which defines a generic aircraft flight profile by preselected modes, each mode defining a flight profile operating station, the deterministic flight mode algorithm defining the nominal values of some number of sensed flight data parameters in terms of the sensed values of some number of the remaining other sensed flight parameters. At each such station, the signal processor comparing the actual sensed mandatory flight parameter value with the corresponding determined value to establish sensor accuracy.

대표청구항 ▼

A flight data system for recording the actual sensed values of flight parameters from a plurality of aircraft sensors at different flight modes of the aircraft flight profile, comprising: data recording means, for providing nonvolatile recording of signal representations of the sensed flight paramet

A flight data system for recording the actual sensed values of flight parameters from a plurality of aircraft sensors at different flight modes of the aircraft flight profile, comprising: data recording means, for providing nonvolatile recording of signal representations of the sensed flight parameter values; and data acquisition means, having signal processing means for providing said signal representations to said flight data recording means, and including signal memory means for storing signals; as characterized by: said data acquisition means further including test means for performing operational self testing of the flight data system and aircraft sensors, said test means including program means comprising a plurality of program signals stored in said signal memory means and representing a deterministic flight mode algorithm indicative of optimum values of selected flight parameters at different flight modes of the aircraft flight profile, said signal processing means comparing the sensed signal value of each selected flight parameter with the related optimum signal value of said program means for the same flight mode and providing a test failure signal to said signal memory means in response to each difference signal magnitude therebetween.