https://content.blubrry.com/spacerockethistory/SRH-2013-08-01-023.mp3
Friday, August 2, 2013
IRIS
2013-033A
IRIS, the Interface Region Imaging Spectrograph, was a UV telescope to study the interface between the solar corona and photosphere. The project was led by LMSSC's Alan Title with participation by Ames and SAO. Cassegrain telescope with slit spectrograph, providing high resolution (0.3 arcsec) high cadence (down to 1s) UV imaging and spectra.
The Pegasus rocket was named 'George Hale' after the solar astronomer.
| IRIS | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2013 Jun 28 | 0131 | T/O L-1011 VAFB | |
| 0227:46 | Drop | ||
| 0227:51 | Stage 1 burn | ||
| 0229:04 | Stage 1 burnout | ||
| 0229:19 | Stage 1 sep | ||
| 0229:20 | Stage 2 burn | ||
| 0229:57 | Fairing sep | ||
| 0230:34 | Stage 2 burnout | ||
| Coast | |||
| 0236:33 | Stage 2 sep | ||
| 0236:44 | Stage 3 TIG | ||
| 0237:52 | Stage 3 burnout | ||
| 0240:52 | Stage 3 sep | ||
| 0246 | Stage 3 CCAM | ||
| 2013 Jul 5 | 97.56 621 x 662 x 97.9 1802LTDN | ||
| 2013 Jul 17 | Telescope door open | ||
| 2013 Jul 25 | 97.56 620 x 663 x 97.9 | ||
Payload:
- 20 cm telescope
- UV spectrograph 1332-1406A, 2785-2835A
Gravity Probe B
2004-014A
The Gravity Probe B satellite was designed to carry the Stanford relativity gyroscope experiment, measuring Einsteinian gravitomagnetic 'frame dragging'.
Prime contractor is officially Stanford. The GP-B spacecraft was built by Lockheed Martin/Sunnyvale, with the special dewar constructed by Lockheed Martin/Palo Alto and the relativity experiment developed by Stanford. The mission is managed by NASA-MSFC. Launch is by Delta 7920-10. Mass of GP-B is 3145 kg (alloc 3322 kg). Probably 350 kg of He so 2805 kg dry. Size is 6.43 l 2.64 dia with 4.0? span across panels.
Orbit 639 x 659 x 90.007
GP-B will observe IM Peg (V=5).
GP-B operations:
IOC 40-60 days Science mission phase 13-16 months Calibration phase 2-3 months
The GP-B relativity mission has completed collecting science data. Its superconducting gyroscopes were held at low temperatures in a liquid helium dewar during the primary mission which began in the spring of 2004. On August 15, the satellite was switched to collect calibration data, moving its pointing from its primary target IM Peg to look at a variety of other bright stars in the final days before the helium ran out. To the suprise of the Stanford-based science team, the dewar remained cold for three weeks longer than expected, allowing extra calibrations to be done. On September 26, GP-B went back to IM Peg to collect yet more science data, but the helium finally did run out three days later, and the gyros began to spin down from 4300 revs per minute to only 120 rpm. When data analysis is complete in early 2007, the GP-B team expect to be able to determine the general relativistic rotation of local space-time caused by the Earth's rotation over the past year.
GP-B was placed in hibernation in May 2006 pending any future experiment funding.
| GP-B | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2004 Apr 20 | 1657:24 | Launch by Delta 7920 | V SLC2W |
| T+1:26 SRM sep | |||
| T+2:11 SRM 7-9 sep | |||
| T+4:23 Stage 1 MECO | |||
| T+4:31 Stage 1 sep | |||
| T+4:37 SES-1 | |||
| T+4:41 Fairing sep | |||
| 1708:40 | T+11:16 SECO-1 | 167 x 652 x 90.014 | |
| 1759:02 | T+1:01:38 SES-2 17s | ||
| 1759:18 | T+1:01:54 SECO-2 | 637 x 659 x 90.011 | |
| T+1:07 Solar panel deloy | |||
| 1812:24 | T+1:15:00 Stage 2 sep | ||
| T+1:34 SES-3 evasive 4.8s | 298 x 635 x 90.41 | ||
| T+1:42 SES-4 depletion | 182 x 631 x 94.56 | ||
| 2004 Apr 21 | 97.59 641 x 645 x 90.01 | ||
| 2005 Sep 29 | Dewar depletion, end of primary mission | ||
| 2006 May | Hibernation mode, end of mission | ||
| 2006 Sep | Preps for use by AF Academy from training, research | ||
| 2007 May | Beginning of USAFA use | ||
| 2009 | GP-B returned to Stanford control | ||
| 2010 Nov | GP-B dormant but operational | ||
| 2010 Dec 8 | Decommissioned | ||
Payload:
- Aperture cover, hinged
- Liquid helium dewar, 2441l.
- Gyroscopes (4), 1.8K cyro
- Quartz Telescope 14cm, f = 3.81m, mirror 0.142m dia
- Electrostatic levitation ssytem
- GPS receivers, 2
Thursday, August 1, 2013
LES-1
1965-008C
The first LES was a small 31 kg polyhedron launched on a Titan IIIA test flight. Three Transtage burns placed the payload in a 2800 km circular orbit; a separate solid injection motor was meant to raise its orbit to 2800 x 18400 x 32 deg, but the motor did not fire. Total mass of the payloads placed in orbit by the Transtage was 495 kg.
LES is 0.6m dia, 31 kg. Standard Star 13A is 38 kg. LES plus motor plus adapter was 158 kg leaving 89 kg for the adapter, which included a timer system and a spring assembly as well as a mounting system for the motor. Truss was 327 kg.
The satellite's transmitter resumed activity in 2013 after over 40 years of inactivity; it was picked up by radio amateur Phil Williams in Cornwall.
| LES 1 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 1965 Feb 11 | 1717 | Launch by Titan IIIA | CK |
| Stage 2 burn | |||
| Stage 2 MECO | |||
| Stage 2 sep | |||
| Transtage burn 1 | |||
| MECO-1 | 88.2 181 x 202 x 32 (MR) | ||
| Transtage burn 2 | |||
| MECO-2 | 200? x 2800? x 32 | ||
| Transtage burn 3 | 2774 x 2811 x 32.1 | ||
| MECO-3 +50s LES 1 sep from Transtage | |||
| Injection rocket fails to fire | |||
| MECO-3 +52s Ballast truss sep from Transtage | |||
| 1965 Feb 15? | Tumble terminated normal ops | ||
| 1965 Jun | Still functional | ||
| 1967 | End of operations? | ||
| 2013 | Signals picked up | ||
Payload:
- Solid state X band transmitter, 8 horn antennae
- Earth sensing/antenna switching system
- Magnetic orientation system
Monday, July 29, 2013
AsiaSat 7
2011-069A
SS/L 1300 satellite replacing Asiasat 3S 105.5E. Television telephone and VSAT.
Originally called Asiasat 5C. In 2013 was relocated to 78.6E next to Thaicom 5.
| A7 | |||
| Date | Time | Event | Orbit |
|---|---|---|---|
| 2011 Nov 25 | 1910:34 | Launch by Proton | KB |
| T+1:59 St 1 sep | |||
| T+5:26 St 2 MECO | |||
| T+5:27 St 2 sep | |||
| T+5:45 GO sep | |||
| 1920:15 | T+9:41 St 3 MECO | ||
| 1920:16 | T+9:42 St 3 sep | -495 x 170 x 51.55 | |
| 1921:50 | T+11:16 MDU-1 | ||
| 1926:21 | T+15:46 MECO-1 | 174 x 175 x 51.55 | |
| 2318:14 | T+1:07:40 MDU-2 | ||
| 2335:58 | T+1:25:24 MECO-2 | 265 x 4999 x 50.3 | |
| 2011 Nov 26 | |||
| 0139:40 | T+3:29:06 MDU-3 | ||
| 0157:27 | T+3:46:53 MECO-3 | ||
| 0158:48 | T+3:48:14 DTB sep | ||
| 0658:05 | T+8:47:31 MES-4 | ||
| 0709:38 | T+8:59:04 MECO-4 | ||
| 0723:34 | T+9:13:00 Asiasat 7 sep from Briz-M | ||
| 0937 | SOZ-6 | ||
| 1047 | SOZ-7 | ||
| 2011 Nov 26 | 906.98 13718 x 35604 x 0.1 | ||
| 2011 Nov 28 | 1266.35 29210 x 35588 x 0.0 | ||
| 2011 Nov 30 | 1400.91 34728 x 35461 x 0.0 | ||
| 2011 Dec 1 | 1428.41 35581 x 35690 x 0.0 GEO 96.0E+1.9E/d | ||
| 2011 Dec 6 | 1436.05 35779 x 35791 x 0.0 GEO 101.5E | ||
| 2012 Jan 7 | 1436.20 35783 x 35794 x 0.0 GEO 101.3E | ||
| 2012 Apr 3 | 1436.07 35781 x 35790 x 0.0 GEO 100.6E | ||
| 2012 Apr 4 | Drift | ||
| 2012 Apr 18 | Move in | 1436.24 35786 x 35792 x 0.1 GEO 105.8E | |
| 2012 Aug 19 | 1436.08 35783 x 35789 x 0.0 GEO 105.6E | ||
| 2013 Mar 11 | 1436.11 35781 x 35792 x 0.0 GEO 105.6E | ||
| 2013 Mar 13 | move out | ||
| 2013 Apr 5 | move in | 1436.08 35775 x 35797 x0.1 GEO 117.9E | |
| 2013 Jul 5 | move out | 1436.12 35784 x 35789 x 0.2 GEO 117.9E | |
| 2013 Jul 26 | move in | 1436.08 35784 x 35787 x 0.0 GEO 78.6E | |
Sunday, July 28, 2013
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