Saturday, April 24, 2010
Friday, April 23, 2010
Thursday, April 22, 2010
GSAT-4
2010-F01
Launch to 83E. Carries one experimental nav transponder, as well as comms payload of a Ka-band regenerative bent-pipe transponder.
GAGAN is a GPS augmentation system (and 'Gagan' is Hindi for 'sky').
Satellite was Box + 2 panels I-2K bus 2220 kg full 1063 kg dry. SIze 2.4 x 1.6 x 1.5m with ? span.
Launch by GSLV-D3 from SHAR using CUS upper stage with ISRO Cryogenic Engine. GSLV Mk II first flight, with enlarged 8.7m long 4m dia fairing. The CUS has the main ICE of 69.5 kN and two verniers of 2 kN each. Prop flow rate is 16.6 kg/s. The stage 3 turbopump failed after 1 second and the mission failed to reach an appreciable orbit.
| GSAT 4 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2010 Apr 10 | 1057 | Launch by GSLV-D3 | SHAR SLP |
| T-0:03 L40 Ign | |||
| T+0:00 S139 Ign | |||
| T+1:49 S139 burnout | |||
| T+1:55 Vr 1.692 44.5km ran 51km Az 107.0 | |||
| T+2:29 L40 MECO 69 km Vi = 2.781 km/s | |||
| T+2:31 GS1 sep | |||
| T+2:31 GS2 burn | |||
| T+2:37 Interstage IS1/2M Sep | |||
| T+2:39 CLG Init | |||
| T+3:48 PLF 115 km 3.810 km/s | |||
| T+4:50 GS2 MECO | |||
| T+4:53 GS2 sep 134 km 5.337 km/s | |||
| T+4:54 St 3 ignition begins | |||
| T+5:05 CUS ignition failed 140 km? after 2.2s | |||
| T+5:10 Vr 4.895 km/s Ran 669.3 alt 136.8 Az 107.1 | |||
| T+6:16 Vr 4.900 km/s Ran 986.5 alt 134.3 | |||
| T+6:20 Vr 4.901 km/s Ran 1004.6 alt 133.4 | |||
| T+7:27 Vr 4.952 km/s Ran 1329.7 alt 106.8 | |||
| T+8:25 Vr 5.023 km/s Ran 1609.7 Alt 65.9 | |||
| T+8:25 loss of telemetry 60 km | |||
Payload:
- Ka Comms payload, with8 spot beams
- GAGAN GEO-Aided Navigation Nav transponder, C/L1/L5 bands, SBAS PRN 127 (GSAT 4)
- OSDE On board structural dynamics expt
Wednesday, April 21, 2010
Tuesday, April 20, 2010
Globalstar 1
1998-008A
The first four satellites were launched by a new Delta configuration, the 7420 with only 4 strapon boosters. A dispenser on the second stage carried two satellites in its lower deck and two on its upper deck.
The Delta depletion burn placed the second stage in an orbit very close to that planned, with a perigee of only 244 km.
| Globalstar FM1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1998 Feb 14 | 1434:00 | Launch by Delta 7420 | |
| 1435 | T+1:03 SRM 1-4 burnout | ||
| 1435 | T+1:06 SRM 1-2 sep 21 km | ||
| 1435 | T+1:07 SRM 3-4 sep 21 km | -6330 x 30 ? | |
| 1438 | T+4:24 MECO 109 km | ||
| 1438 | T+4:32 Stage 1 sep | ||
| 1438 | T+4:37 Stage 2 burn | -4500 x 150 ? | |
| 1438 | T+4:47 Fairing 126 km | -4450 x 150 ? | |
| 1445 | T+11:22 SECO 1 | 185 x 1241 x 52.0 | |
| 1535 | T+1:01:14 Burn 2 | ||
| 1535 | T+1:01:38 SECO 2 | 1247 x 1247 x 52.0 | |
| 1542 | T+1:08:20 U1,U2 sep | ||
| 1546 | T+1:12:30 L1,L2 sep | ||
| 1998 Feb 14 | 1610 | 110.54 1244 x 1259 x 52.0 | |
| 1621 | T+1:47:30 Burn 3, evasive, 5s | ||
| 1621 | SECO 3 (Delta orbit) | 889 x 1253 x 51.3 | |
| 1629 | T+1:55:00 Burn 4, depletion, 5s | ||
| 1629 | SECO 4 (Delta orbit) | 245 x 1237 x 52.7 | |
| 1998 Feb 18 | 1555 | 110.52 1242 x 1259 x 52.0 | |
| 1998 Feb 20 | 0105 | 110.56 1246 x 1258 x 52.0 | |
| 1998 Mar 7 | 1644 | 110.54 1244 x 1258 x 52.0 | |
| 1998 Apr 11 | 114.08 1387 x 1440 x 52.0 | ||
| 1998 Sep 9 | 114.08 1412 x 1414 x 52.0 | ||
| 2005 Apr 22 | Orbit raise | 114.34 1424 x 1426 x 52.0 | |
| 2005 May 26 | Orbit raise | 114.97 1448 x 1459 x 52.0 | |
| 2005 Jul 18 | 114.97 1452 x 1455 x 52.0 | ||
| 2005 Oct 12 | 114.97 1452 x 1455 x 52.0 | ||
| 2005 Oct 13 | Orbit raise | 115.22 1464 x 1467 x 52.0 | |
| 2006 Apr 19 | 115.22 1464 x 1467 x 52.0 | ||
| 2006 Apr 21 | Orbit raise | 115.63 1483 x 1485 x 52.0 | |
| 2006 Jun 20 | 115.63 1483 x 1485 x 52.0 | ||
| 2006 Jun 22 | Orbit raise | 116.05 1501 x 1504 x 52.0 | |
| 2006 Sep 12 | 116.05 1502 x 1504 x 52.0 | ||
| 2006 Oct 12 | Orbit raise | 116.29 1513 x 1514 x 52.0 | |
| 2007 Oct 26 | 116.29 1513 x 1515 x 52. | ||