“Eurostar E3000”的意思、由来-开放百科全书

The Eurostar E3000 is a generic satellite model most commonly used for commercial and military communications satellites manufactured by Airbus Defence and Space (formerly Astrium). It is a member of Airbus Defence and Space's Eurostar family. It utilises a chemical, bi-propellant propulsion system for orbit raising and on-station manoeuvres with an optional plasma propulsion system (PPS). The PPS harnesses the Newtonian effect as a result of the ionisation of xenon gas employed by the use of Hall effect plasma thrusters. This system is most commonly used for North-South station-keeping. The E3000 was the first commercial satellite family to use lithium-ion batteries rather than the older nickel-based technologies for power supply during eclipses.

The E3000 bus can be modified extensively to meet customer requirements, but most of the E3000 satellites have a launch mass of between {{convert|4500|and|6000|kg}}, and solar arrays between {{convert|35|and|45|m}} providing between nine and sixteen kilowatts at end of life. They tend to feature between 50 and 90 transponders, most often in the {{Ku band}} and C band.

Satellites built around the E3000 platform include Hispasat's Amazonas 1 and 2, Arabsat 5A, 5B, and 5C, Astra 1M, 1N, 2E, 2F, 2G, 3B and 5B, Eutelsat's W3A and Hot Bird 8-10, Intelsat 10-02, KaSat, Atlantic Bird 7, W5A Telesat's Anik F1R, Anik F3 and Nimiq 4, Skynet 5A-C and the Inmarsat 4 series of satellites; Each of the three Inmarsat 4 in service has a large deployable reflector as the main antenna.

In March 2015 Airbus Defence and Space received a delivery of new 3D printed brackets for mounting Telemetry and Tele-Command antennas, being the first space-qualified 3D printed component of its kind.^[1] Also in March, Airbus signed a contract with Snecma for 5-kilowatt PPS5000 Hall effect thrusters for the E3000 Electric Orbit Raising variant of the satellite bus. New thrusters would allow reducing the weight of satellite up to 40%.^[2]

References

1. ^{{cite web|url=http://www.satellitetoday.com/technology/2015/03/20/airbus-defence-and-space-receives-3-d-printed-satellite-parts/|title=Airbus Defence and Space Receives 3-D Printed Satellite Parts|publisher=Via Satellite|date=20 March 2015|accessdate=1 August 2015}}
2. ^{{cite web|url=http://www.satellitetoday.com/technology/2015/03/25/snecma-receives-follow-on-contract-from-airbus-for-all-electric-thrusters/|title=Snecma Receives Follow-on Contract from Airbus for All-Electric Thrusters|publisher=Via Satellite|date=25 March 2015|accessdate=1 August 2015}}