Multiple-reflector antenna for telecommunications satellites

摘要

The antenna (1) has a motor (8) including a rotor (9) to drive a shaft (5), and a stator (10) attached to a load-bearing structure (2), where sub-reflectors (6, 7) are attached to the shaft between two bearings. A rigid mechanical filter (13) between the shaft and the rotor enables the rotor to transmit rotational movement to the shaft and to dampen stresses generated by the shaft on the motor. A locking unit holds the angular position of the shaft in relation to the load-bearing structure in a stowed arrangement, and releases the shaft to rotate in an unstowed arrangement.