"cavelamb" wrote in message
m...
Stu,

Have you seen this one?

http://www.wimp.com/impossiblehelicopter/

I have now. Some how it seriously degrades the old adage: "Seeing is
Believing".
I was involved in the development of the shuttered video camera nearly 40
years ago when I worked at the Naval Weapons Center. We didn't even need
the radio signal. We could adjust the shutter speed to stop props and other
rotating devices. The radio signal would allow you to sync to a particular
blade tho...

Thanks
Stu