Technology and performances of structural thermal mechanical equipment used for antenna of TV.SAT-TDF 1 program

The mechanical-thermal technologies of the TV SAT-TDF 1 antenna module are described. The module is housed in a tower structure, with 2 reflectors (Tx at 12 GHz, Rx at 18 GHz); 2 antenna fine pointing mechanisms with their associated electonics; 2 reflector folding and release mechanisms; 2 reflector deployment and locking mechanisms; and thermal control equipment. Criteria assumed to satisfy antenna payload (commonality, AM orientation, reflectors folding according to the fairing volume, folding and kinematic constraints) are described. Thermal control concepts, analysis, performances, and alignment techniques are summarized.