Optus B2 |
Australia |
International Sat. n°: |
Australia satellite n°: 7 |
| Designation | 22278 / 92090A |
| Launch date | 21 Dec 1992 at 11:20 UT |
| Launch site | Xichang, LC-2 |
| Launch vehicle | CZ-2E |
| Mission | Telecommunications |
| Earth orbit (before decay): | |
| Perigee / Apogee | 125 x 133 km |
| Eccentricity | |
| Inclination | 28.11 deg |
| Period | 87.06 min |
| Prime manufactor | Hughes |
| Platform | HS-601 |
| Operator | Optus Communications Pty., Ltd. |
| Mass at launch | 2858 kg |
| Mass in orbit | 1659 kg BOL |
| Basic shape | |
| Dimension (m) | |
| Equipment | 15 Ku-band transponders, 1 L-band tranponder, Ka-band beacon, laser retroreflector |
| Solar array | 2 deployable solar arrays |
| Stabilization | |
| Propulsion | R-4D-11 |
| DC power |
| Out of service | 21 Dec 1992 |
| Cause |
The
satellite was destroyed when the fairing area of the launch vehicle was
destroyed some 47 seconds after liftoff. The cause of the failure is still
subject to some speculation and disagreement but was almost certainly due to
wind shear effects encountered just after liftoff. The Optus B series of satellites have a liquid propulsion apogee engine (not solid propelled motor). They do, however, have a solid perigee stage when launched on Long March 2E. It is almost certain that this solid motor (plus a few remnants of the satellite itself) is all that was delivered into orbit. |
| Descent date | 29 Jun 1995 |