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NASA Finds, Fixes Small Glitch in LADEE Moon Probe
Friday's moon-bound NASA launch from Wallops Island went well, but, says NBC News, "[H]ours after the 11:27 p.m. EDT (0327 GMT) liftoff, NASA officials reported that the spacecraft's reaction wheels — which spin to position and stabilize LADEE in space without using precious thruster fuel — unexpectedly shut down. By Saturday afternoon, the glitch had been traced to safety limits programmed into LADEE before launch to protect the reaction wheel system, NASA officials said. Those fault protection limits caused LADEE to switch off its reaction wheels shortly after powering them up, according to a mission status update. Engineers have since disabled the safety limits causing the glitch and taking extra care in restoring the fault-protection protocols."
I work for a sensor company. If you want Kelvin, then I'll use Kelvin. I don't really care if it's Celsius, Rankine, or frequency of cricket chirps. Our environmental chambers happen to be set up in Fahrenheit, because our production staff is comfortable with those units; and I used degF because it's what the U.S. centric audience would know. You might be surprised to know that in the real world, people might not use the scale you expect them to, even if it's a standard.