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In Reply to: RE: Ah, when disk drives looked like washing machines posted by AbeCollins on August 1, 2024 at 09:44:49:
OK, one more story from my working days:
After a few years as a circuit designer, I gravitated more toward the software realm. One day, we were testing a 777 flap/slat control unit for the first time in the lab, which had a real aisle stand, flap lever and one wing with flaps / slats / hydraulics, etc. Pretty much the real deal.
I had done an analysis of the end-to-end logic for extending the flaps/slats from the flap lever all the way to the torque tube rotation. There were a dozen or so steps and many of them reversed the logic. So we weren't 100% sure of what the software would do when the flap handle was moved out of the zero detent. Would the tube rotate in an extend or retract direction? Only one way to find out..
We had the mechanical guys who designed the gearbox watching, and as the handle was moved to extend, the tube was rotating in the wrong direction - to retract. The mechanical guys were in a panic, saying "oh no, we need to add another gear now and we don't have any room left!".
I said, don't worry, we can change the one to a zero in the code and it will rotate the other way.
The mechanical guy said "YOU CAN DO THAT??" :-)
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Follow Ups
- RE: Ah, when disk drives looked like washing machines - kh6idf 11:14:33 08/01/24 (1)
- RE: Ah, when disk drives looked like washing machines - AbeCollins 07:12:01 08/02/24 (0)
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