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UAL747400 · May 11th, 2008, 14:11

How fast does the variable phase antenna spin?

I know it's something trivial and is probably a "who cares" thing, but as a CFI, the question always comes up from my students. I've heard things like 30,000 RPMs, 3,000 RPMS, and everything in between. I'm thinking 30,000 RPMs sounds about right. It's my own theory that to cause something that travels at the speed of light to be received in different phases depending on where you are from the station, it would have to be spinning pretty darn fast.

May 11th, 2008, 14:11	#1
UAL747400 Old Skool Join Date: Sep 2002 Location: Grand Forks, ND (UND)/ Davenport, IA Posts: 2,204	Question about VORs How fast does the variable phase antenna spin? I know it's something trivial and is probably a "who cares" thing, but as a CFI, the question always comes up from my students. I've heard things like 30,000 RPMs, 3,000 RPMS, and everything in between. I'm thinking 30,000 RPMs sounds about right. It's my own theory that to cause something that travels at the speed of light to be received in different phases depending on where you are from the station, it would have to be spinning pretty darn fast. __________________