1999-014A
The SeaLaunch Zenit-3/Blok DM-SL was be launched from 0 N 154 W on its first mission. Stage 1 will impact 147W 0N, Stage 2 at 111W 0N.
Stage 1 is 33m long 3.9m dia. The RD-171 had four thrust chambers with 739 kNs thrust. Stage 2 is 10.4m long, with a single chamber RD-120 with 94 kN thrust and an RD-8 vernier with 8kN thrust, all LOX/kero. The DM-SL is 5.6m long 3.7m dia with an 8.0kN 11D58M engine.
The demo launch in 1999 Mar will use an inert pathfinder payload representing an HS-702. The square truss with four mass booms eproduces the dynamic properties of Galaxy 11. The payload was built at Boeing/Kent and has a mass of 4700 kg.
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| DemoSat |
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| Date | Time | Event | Orbit |
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| 1999 Mar 28 | 0129:59 | Launch from SL Odyssey |
| | | T+2:26 Stage 1 sep |
| | | T+3:20 Fairing sep |
| | | T+9:05 Stage 2 sep | -2200? x 204 x 1.3? |
| | 0139:15 | T+9:15 Blok DM-SL burn 1 |
| | 0143:46 | T+13:46 Blok DM-SL MECO-1, EPO | 93.74 180 x 735 x 1.3 |
| | 0217:20 | T+47:20 DM-SL burn 2 |
| | 0223:20 | T+53:20 DM-SL MECO-2 | 720 x 36536 x 1.3 |
| | 0231:40 | T+1:01:40 DM-SL sep |
| | 0517 | T+3:47 DM-SL disposal burn | |
| | | T+3:52 CCAM burn end | 641.77 597 x 35938 x 1.3 |