Here's one I've always wondered about: why don't Naval Aviators use NVGs when landing on the boat at night?
Egads, have you ever worn any type of Night Vision Device (NVD)?
Since this
is the Stupid Question thread.....(and there is no such thing as a stupid question as I was taught in AI aka API now), here's the rub with NVDs to fly the ball (beside not being a good thing to be wearing on your head while taking a trap; but JSF helmet with have integrated NVD capability so that's a non issue in future):
1. Visual acuity is degraded (although newer NVDs are significantly better than early NVGs) and pilot has to see movement of the ball in reference to the datums
2. The Fresnel Lens (as in flying the "ball") features an orange ball, green datums and red waveoff lights incompatible with monochrome NVDs that have image intensifiers that do a great job magnifying a light source or reflectivity, but that works against seeing the minute movement of the ball if all the lights look like a traffic light in the fog.
Note different colored lights of various components
And here's the MOVLAS (the OK machine) variant lit up