Globalstar 65, 69, 71 & 72

The Globalstar global mobile communications network offers global, digital real time voice, data and fax via a constellation of 48 minisatellites. The constellation operates in a 1410 km orbit inclined at 52 degrees, and will also have 8 spares. The satellites were built by Space Systems Loral and Alenia Aerospazio in Rome, Italy. More than 10 major companies have invested US$ 2.6b (1998), and include Loral (39%), Qualcomm inc., AirTouch communications, Alcatel, DACOM, Daimler Benz Aerospace, Hyundai, Elsacomm, China Telecom (HK), Vodaphone and France Telecom. The satellites are based on the SS/Loral LS-400 platform, with the body is trapezoidal in shape with two deployed solar panels, in order to allow multiple satellites to be carried on the same launch. The satellite is 3-axis stabilized and employs magnetometers on a deployable boom, sun sensors, GPS as attitude sensors, and carries two deployable solar arrays delivering 1100 W for normal operations. The propulsion system employs hydrazine, and its primary use is station keeping. Each satellite weighs 450 kg, with a dry mass of 350 kg, and is designed for a 7.5 year lifetime. The payload antennas are phased arrays mounted on the satellite body. The Attitude control, orbit control and solar panels were delivered by Dornier (Ger).