English Language & Usage Asked on July 11, 2021
At Planetary.org I read this:
Below is a photo of a flight wheel — that is, one of the six that’s sitting on Mars today.
Never heard flight wheel before and couldn’t find anything when I searched for the expression. To me it looks like a regular wheel (how regular a wheel that is used on a vehicle on Mars can be).
Edit: and, BTW, I associated to "fly wheel", which seems far fetched and probably isn’t correct.
A 1996 NASA document (Wheel Abrasion Experiment Metals Selection for Mars Pathfinder Mission) explains the jargon, albeit obliquely:
The final flight hardware was built using three strips of 707 l-T6 aluminum ... A WAE flight wheel is shown in figure 5.
A flight wheel is one fitted for the flight, that is, the final version from development and testing.
Answered by Andrew Leach on July 11, 2021
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