8 - ATTITUDE CONTROL & STATIONKEEPING Near-Term Systems Studies * Define Station keeping & Control Requirements During Phased Assembly in Low Earth Orbit (LEO) Geosynchronous Orbit (GEO) * Define Control Requirements During Transport From LEO to GEO » Tradeoff Actuator Type & Location Momentum Storage Magnetic Solar - Dispersed or Centrally Located Impulsive System « Antenna Mechanical Pointing System Structural Dynamics and Mast Compliance - Sensor & Electronics Interface with Antenna Phase Front Control System Evaluate Alternatives to Rotary Joint Technology Development • Develop High Performance (Icp - 8000 SEC) Low Thrust Impulsive System Using Non-corrosive Propellants
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