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View Diary: How Airliners Work - Flaps and Slats (77 comments)

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  •  Good stuff as usual MK (14+ / 0-)

    Back in the '90s I worked on the FSEU (Flap Slat Electronic Unit) for the 777. People would be amazed at the number of fault conditions being reported by the sensors. I believe we called your condition #2 flap skew. There were over 3000 variables used in the software.

    For redundancy sake, we had two FSEU boxes located in different locations on the plane. Each box used two processors, Intel 80960 and Motorola 68030(?). Because no processor is completely debugged, the results were compared continuously.

    I've always maintained that the software developed for the 777 which was extended to their follow-on airplanes are some of the Crown Jewels of Boeing.

    There was only one joker in L.A. sensitive enough to wear that scent...and I had to find out who he was!

    by virginislandsguy on Fri Apr 19, 2013 at 11:10:34 AM PDT

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