The slipring shown here in its de-icing version is mounted on the tail rotor of a helicopter. In addition to de-icing, this kind of helicopter slipring is also used for the critical function of pitch adjustment of the tail rotor blades.
Military Helicopters Sliprings
Naval Equipment Sliprings
Sliprings and Rotary Joints for Tracking and Surveillance
Cobham Aerospace Communications to Appear at Defence Exhibitions in September