Spaceway
| Spaceway 1/2/3 | |
|---|---|
| Start date |
April 26, 2003 November 16, 2005 August 14, 2007 |
| Launcher |
Sea Launch Zenit 3SL Ariane 5 ECA Ariane 5 ECA |
| Takeoff mass | 6080 kg 6116 kg 6075 kg |
| Mass in orbit | 3832 kg |
| Dimensions | 5.1 * 3.4 * 3.2 m |
| Manufacturer | Boeing |
| Satellite bus | 702 |
| lifespan | 12 years |
| operator | DirecTV |
| Playback information | |
| Transponder | Transmitting antenna: 2 m phased array Ka-band antenna with 1500 elements, plus multihorn receiving antenna |
| Bandwidth | 500 MHz (10 GBps) |
| Others | |
| Electrical power | Gallium arsenide solar cells in two wings with a 40.9 m span with a total output of 12.3 kW |
| Power storage | 45 NiH2 batteries |
| position | |
| First position | 102.8 ° West 99.2 ° West 95.0 ° West |
| Actual position | 102.8 ° West 99.2 ° West 95.0 ° West |
| drive | an apogee engine R-4D with 445 N thrust 4 xenon ion engines XIPS-25 with 25 cm nozzles and 79/165 mN thrust |
| List of geostationary satellites | |
Spaceway is the name of a series of geostationary television or communications satellites that provide broadband Internet connections and broadcast HDTV for DirecTV users in North America . It is also the name of the Ka-band communication system from Hughes Electronics, which is behind the Internet supply system .
Spaceway-1 was launched by Sea Launch on April 26, 2005 with a Zenit-3SL rocket . It was the first of three identical Spaceway satellites to be built on the basis of the Boeing 702 satellite bus . These three-axis stabilized satellites were actually designed to carry simple broadcast and two-way Internet data on a 500 MHz wide channel. However, at DirecTV's request, Boeing changed the first two satellites to broadcast HDTV channels. Spaceway-1 and Spaceway-2 were each brought a short distance from the satellites DirecTV-10 and DirecTV-11 in order to serve together with these for the transmission of HDTV television.
Spaceway-3 is used by Hughes Network Systems (a provider of broadband Internet access in the USA and a subsidiary of Hughes Aircraft ) for satellite-based Internet connections. Data rates of 512 kbit / s, 2 Mbit / s and 16 Mbit / s are possible with a relatively small 74 cm antenna. Like the first satellite, the satellite was originally to be launched with a Zenit 3SL rocket. After a false start of the Zenit-3SL, however, a contract with Arianespace was concluded in March 2007 instead . Spaceway-3 was launched into geostationary orbit by an Ariane 5 on August 14, 2007 along with BSAT-3a . Hughes has an option at Boeing to build an additional satellite (Spaceway-4) of this type.
swell
- Boeing: Factsheet (English, archived November 2012)
- Arianespace: Information on the launch of Spaceway-3 (PDF)
- Gunter's Space Page: Spaceway (English)
Individual evidence
- ↑ Lyngsat: North & South America