STAR Bus

The STAR bus is a satellite bus for small and medium-sized communications satellite of the U.S. Orbital Sciences Corporation.

Orbital customized on the basis of this design for the end user various payloads, which are tailored to the particular requirements. It is compatible with various starting systems and, for example, to launches Delta IV, Atlas V, Ariane 5 and Proton be started. It was first established in November 1997 IndoStar 1 and since ( improved in version STAR Bus 2) more than 16 satellites were launched with this satellite bus.

Specifications

The basic structure of the three -axis stabilized satellite having a size of 1.75 m x 1.7 m x 1.8 m and is made of aluminum alloys, and composites. The empty weight is 558 kg. The power supply of the satellite and its payload is of gallium arsenide solar panels that generate up to 5 kW of power ( in the later version up to 7.5 kW ), two 4.84 -kWh lithium - ion batteries and a 24-36 V DC bus system guaranteed. The drive comes in orbit a Hydrazintriebwerk used. The control is performed by a processor MIL -STD- 1750A with a MIL -STD- 1553B bus system. For position control earth and sun sensors and star sensors optionally be used. As life expectancy for satellite 15 years are given.

Use

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