Friday, April 3, 1998

STS-6 (Challenger)

 1983-026A


Challenger was prepared for its first mission for the remainder of the year, and was rolled out to the launch pad at the end of November. The first 20 second flight readiness firing was carried out in Dec 1982. During this firing, a hydrogen leak was detected in the aft compartment. A second firing in January, with extra instrumentation, led to the discovery of cracks in main engine fuel lines. The engines were changed out, and the go-ahead was given for a full-fledged launch attempt.

Challenger took off on its first flight on 1983 Apr 4. The external tank impacted at 28.2S, 80.34E. The TDRS-1 satellite was deployed early on Apr 5. On Apr 6 Challenger made an RCS burn in a rendezvous rehearsal. On Apr 7, the first Shuttle spacewalk took place. At 1740, the astronauts entered the airlock to begin a test of the spacesuits and inspect the payload bay. The airlock was depressurized at around 2105; Musgrave exited at 2121 and Peterson egressed at 2126. The astronauts returned to the airlock at 0053 and the airlock was repressurized after 4 h 17 min.


STS-6 
 

DateTimeEventOrbit  

1982 Jul 5    OPF Bay 2 
1982 Nov 22    VAB 
1982 Nov 29   Mate with ET  VAB Bay 3 
1982 Nov 30   Rollout  LC39A 
1982 Dec 18   FRF  LC39A 
1983 Jan 25   FRF-2  LC39A 
1983 Feb 4   Begin SSME removal 
1983 Mar 11   SSMEs reinstalled 
1983 Apr 4  1830:00  Launch  LC39A 
 1832:09  SRB sep, 46.2 km   
 1838:19  MECO at 110.1 km 
 1838:38  ET sep, 111.6 km 
   86.09 4 x 156 x 28.5  
   86.11 4 x 157 x 28.5 (dV)  
 1840:20  OMS 1 (2:15) 66.4m/s  88.29 94 x 286 x 28.5  
 1842:35  OMS 1 CO  88.34 99 x 284 x 28.5 (dV) 
 1913:38  OMS 2 (1:56) 56.4m/s   
 1915:34  OMS-2 CO 
 1916  ET breakup 
 2005  PLBD open 90.27 284 x 291 x 28.47 
 2300  IUS tilt table up 
1983 Apr 5  0431:58  TDRS deploy 
 0450:53  OMS 3 (21s) 12m/s sep  90.71 290 x 327 x 28.5 
 2003:47  OMS 4 (23s) 13m/s  90.21 280 x 289 x 28.5 
  RCS 
1983 Apr 6   RCS 
1983 Apr 7  0618   90.22 279 x 290 x 28.5 
 2103  Battery power 

2105:00  Depress begin 
 2115?  Depress complete 

2121  HO 

2122Peterson egress  
 2126  Musgrave egress 
1983 Apr 8  0050  Ingress Peterson 
 0053  Ingress Musgrave 
 0055?  HC 
 0115  Repress (MR) 
 0122  Off battery power 
  RCS burn (rv practice) 3m/s  90.12 276 x 284 x 28.5 
 1930   90.13 277 x 284 x 28.5 
1983 Apr 9  1018   90.14 276 x 286 x 28.5 

1436  PLBD close 
 1755:00  OMS DO (145s) 89.0m/s 
 1757:25  OMS DO CO 
 1823:27  Entry 
 1853:42  Landed  RW22 EAFB 
 1853:54  NGTD 
 1854:31  Wheels stop 
1983 Apr 14  1200  SCA 905  EAFB 
 1800SCA 905  Kelly AFB, TX 
1983 Apr 16  1745  SCA 905  KSC SLF 

Monday, March 30, 1998

Start-1

 1993-014A


The test launch of Start carried an EKA test satellite for the Moscow Institute for Thermal Technology, in collaboration with the IVK Group holding company. The satellite had a mass of 260 kg.

The post-boost propulsion system is on the forward end of the fourth stage, but remains attached to it. The post-boost stage uses a solid propellant gas generator.


EKA-1 
 

DateTimeEventOrbit  

1993 Mar 25  1315:27  Launch by Start-1  PL silo 
 1315:29  Out of silo, ignition 
 1316:48  Stage 1 sep, Stage 2 on (T+1:21) 
 1317:48  Stage 2 sep, Stage 3 on (T+2:21) 
 1318:49  Stage 3 cutoff (T+3:22) 
 1324:04  Stage 4 on (T+8:37) 
 1324:57  Stage 4 cutoff (T+9:30) 
  DS burn  
 1325:49  Stage 4 sep (T+10:22)  682 x 933 x 75.6  
   682 x 970 x 75.6 

Kosmos 540

  1972-104A


Kosmos-540, a Strela-2 comsat, was launched on 1972 Dec 25 from Plesetsk. It entered the same orbital plane as Kosmos-494, plane B.


Kosmos-540 
 

DateTimeEventOrbit  

1972 Dec 25  2305:01  Launch by 11K65M  PL  
 2307?  Stage 2 burn  
 2313?  Stage 2 coast 
 2339?  Stage 2 burn 2 
 2339?  Stage 2 sep  
1972 Dec 29  0530   100.79 781 x 810 x 74.08

Sunday, March 29, 1998

Kosmos 495

  1972-044A


Kosmos-495 was launched in Jun 1972 from Plesetsk to a 65.4 degree orbit. The mission lasted 13 days.


Kosmos-495 
 

DateTimeEventOrbit  

1972 Jun 23  1119:57  Launch by 11A57  PL 
 1124  Blok-I burn  
 1128  Blok-I sep  
1972 Jun 24  1054   89.28 201 x 276 x 65.4 
1972 Jun 24  1200   89.30 202 x 278 x 65.41 (RAE) 
1972 Jun 26  2225   89.25 199 x 274 x 65.4 
  Lower orbit 
1972 Jun 28  1131   89.40 170 x 319 x 65.4 
1972 Jun 5  1314   89.21 167 x 303 x 65.4 
1972 Jul 5   Engine sep 
1972 Jul 6  0402? Retrofire 
 0412? PO sep 
 0416? Entry 
 0437? Landed 

May 13,2026

  https://planet4589.org/space/jsr/back/news.855.txt