SES-14
| SES-14 | |
|---|---|
 Artist's impression of SES-14 in orbit |
|
| Start date | January 25, 2018, 10:20 pm UTC |
| Launcher | Ariane 5 ECA |
| Launch site | CSG , ELA-3 |
| COSPAR-ID : | 2018-012B |
| Takeoff mass | 4426 kg |
| Dimensions | 4.0 × 5.4 × 2.7 m |
| Manufacturer | Airbus Defense and Space |
| Satellite bus | E3000EOR |
| lifespan | 15 years |
| operator | SES SA |
| Playback information | |
| Transponder | 20 Ku-band and 28 C-band transponders |
| Others | |
| Electrical power | 16 kW (EOL) |
| position | |
| First position | 47.5˚ west |
| drive | 6 Saffron / Snecma Hall Effect Thrusters |
| List of geostationary satellites | |
SES-14 is a commercial communications satellite from the Luxembourg company SES .
begin
SES-14 was on January 25, 2018 22:30 UTC along with the communication satellite Al Yah three in the top starting position of the double starter an Ariane 5 ECA - carrier rocket from the launch pad -ELA 3 of the Guiana Space Center in a super synchronous Geotransferorbit brought . The satellite was disconnected from the upper stage after around 27 minutes of flight. Instead of the planned orbit of 250 × 45,000 km with a 3 ° orbit inclination , however, SES-14 was brought into a significantly more inclined orbit (232 × 43,198 km; 20.64 °). The reason for this was an incorrectly specified reference value of the missile's inertial navigation system . As a result, an additional 166 m / s Delta v had to be applied to reduce the orbit inclination. The time to reach the planned geostationary orbit should increase by about 4 weeks. Since the satellite is equipped with a very efficient Hall drive , this maneuver was probably carried out without affecting the planned service life of 15 years. SES-14 went into service from the planned position in September 2018.
construction
SES-14 is equipped with 20 Ku-band and 28 C-band transponders and is to provide telecommunications services and television from position 47.5˚ West from North and South America , the Caribbean , the North Atlantic , Western Europe and the Mediterranean area. The satellite is based on the Eurostar-3000EOR ( Electric Orbit Raising ) satellite bus from Airbus Defense and Space and uses efficient Hall-effect engines instead of chemical rocket engines for all propulsion purposes . The 6 PPS5000 engines from the manufacturer Safran / Snecma , each with 2–5 kW power consumption, are operated with high thrust (300 mN) and low specific impulse (1700 s) to lift the orbit , for smaller corrective maneuvers and to maintain the intended position lower thrust (180 mN) and higher specific impulse (1850 s).
NASA's Global-scale Observations of the Limb and Disk (GOLD) experiment was integrated into the satellite as a secondary payload . For five years, the temperature and composition of the ionosphere and thermosphere will be measured every 30 minutes . GOLD was developed as part of the Explorer program and is based on a spectroscope in the far UV range . The instrument is 40 × 30 × 70 cm in size, weighs 36 kg and consumes 72 W of electricity.
Web links
- Operator website: SES-14's mission
Individual evidence
- ↑ a b Ariane 5 VA241 Flight Profile (SES 14, Al Yah 3). In: Spaceflight 101. Retrieved January 30, 2018 .
- ↑ SES 14 Satellite details 2018-012B NORAD 43175. In: N2YO. Retrieved January 30, 2018 .
- ↑ a b c d e f g h i SES 14 - Ariane 5 VA241. In: Spaceflight 101. Retrieved January 30, 2018 .
- ↑ a b c d Stephen Clark: Ariane 5 deploys two telecom satellites in orbit despite telemetry loss. In: Spaceflight Now. January 26, 2018, accessed January 30, 2018 .
- ^ Arianespace: Independent Inquiry Commission announces conclusions concerning the launcher trajectory deviation during Flight VA241. February 23, 2018, accessed March 5, 2018 .
- ↑ A Bizarre Failure Scenario Emerges for Ariane 5 Mission Anomaly with SES 14 & Al Yah 3. In: Spaceflight 101. January 26, 2018, accessed January 30, 2018 .
- ^ SES: SES-14 Goes Operational to Serve the Americas. September 4, 2014, accessed September 4, 2018 .