Al Yah 3
| Al Yah 3 | |
|---|---|
| Start date | January 25, 2018, 22:30 UTC |
| Launcher | Ariane 5 ECA VA241 |
| Launch site | Center Spatial Guyanais, ELA3 |
| COSPAR-ID : | 2018-012A |
| Takeoff mass | 3795 kg |
| Dimensions | 5.18 x 3.35 x 2.87 m |
| Manufacturer | Orbital Sciences Corporation |
| Satellite bus | GEOStar-3 |
| lifespan | 15 years |
| Stabilization | Three-axis stabilization |
| operator | Al Yah Satellite Communications Company |
| Playback information | |
| Transponder | 53 Ka-band C-band transponders |
| Others | |
| Electrical power | 7.5 kW |
| position | |
| First position | 20 ° west |
| drive | 450 N BT-4 hydrazine engine, 4 kW XR-5 Xenon Hall drive |
| List of geostationary satellites | |
Al Yah 3 is a commercial communications satellite owned by the Al Yah Satellite Communications Company .
It was on January 25, 2018 22:30 UTC along with the communication satellite , SES-14 in the lower 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 232 × 43,163 km with a 3 ° inclination , however, it was brought into a much more strongly inclined orbit of 20.64 °. The reason for this was an incorrectly specified reference value of the missile's inertial navigation system . As a result, its engines have to reduce the orbit inclination. It is still unclear whether this will be possible without impairing the planned service life of 15 years.
The three-axis stabilized satellite is equipped with 53 Ka-band transponders (+ 5 reserve) and eight reflector antennas and is to provide telecommunication services from the position 20 ° West from Brazil and Africa. It was built on the basis of the GEOStar-3 satellite bus from Orbital Sciences Corporation and has a planned service life of 15 years.
Web links
- Orbital Sciences Corporation: manufacturer's website
- Al Yah Satellite Communications Company: Operator website
Individual evidence
- ^ Arianespace: Independent Inquiry Commission announces conclusions concerning the launcher trajectory deviation during Flight VA241. February 23, 2018, accessed March 5, 2018 .
- ↑ Stephen Clark: Ariane 5 deploys two telecom satellites in orbit despite telemetry loss. In: Spaceflight Now. January 26, 2018, accessed February 11, 2018 .
- ↑ a b Ariane 5 VA241 Flight Profile (SES 14, Al Yah 3). In: Spaceflight 101. Retrieved February 11, 2018 .
- ↑ A Bizarre Failure Scenario Emerges for Ariane 5 Mission Anomaly with SES 14 & Al Yah 3. In: Spaceflight 101. January 26, 2018, accessed February 11, 2018 .