Rotating objects on aircraft using Gmax

Hi everybody,
I'm currently in the process of getting a source file for an E-3 AWACS. At the moment it does not have a rotating radar dome and I would love to be able to make that spin (preferably at around 1 turn every 10 seconds).
Does anyone know how?
Regards
Scott Wayne
I'm currently in the process of getting a source file for an E-3 AWACS. At the moment it does not have a rotating radar dome and I would love to be able to make that spin (preferably at around 1 turn every 10 seconds).
Does anyone know how?
Regards
Scott Wayne