Mission 40
STS-39
1991-031A
Crew: 7 CDR - Michael L. Coats
Plt - L. Blaine Hammond
MS 1 - Gregory J. Harbaugh (EV 1)
MS 2 - Donald R. McMonagle (EV 2)
MS 3 - Guion S. Bluford (IV 1)
MS 4 - Charles L. Veach
MS 5 - Richard J. Heib
Launch 28 April 1991 @ 0733:14.07812 EDT
Orbital incl: 57.00
Max alt: 270.4 km.
Orbits: 132
Dur: 8:07:21:25
Landing: 6 May 1991 @ 1455:39 EDT
Launch Info: Orbiter - Discovery 103-12 Pad 39A KSC (MLP-2) - Hold time of
32 minutes, 14 seconds due to false start of payload recorders (not at GPC problem).
First attempt on 23 April cancelled at 1:15 am (during propellant loading) due to SSME-3
HPOTP pressure transducer failure. Landed at KSC/SLF Runway 15. 7th KSC landing.
Diverted from EAFB due to high crosswinds.

MISSION PARTICULARS
Launch Window: 3 hours, 20 minutes (7:01 - 10:21 am EDT). Limited to 2 hours, 30 minutes due to "crew on back" constraint
TAL Sites: Zaragoza (Alternates: Moron, Spain & Ben Guerir, Morocco)
ECAL (East Coast Abor Landing) site capability: Cherry Point MAS, Oceana NAS, Dover AFB & Otis ANGB (2 engine out abort)
AOA site: Northrup Strip, White Sands, NM
Primary landing site: Edwards AFB (scheduled 11:48 am PDT, 6 May)
Landing Speed: 210 knots (242 mph)
Landing rollout: 9,152' from main gear touchdown
Vehicle weight @ liftoff: 4,512,698 lbs
Orbiter weight @ liftoff: 246,986 lbs
Orbiter weight @ landing: 211,577 lbs
PAYLOADS
Cargo mass approx.: 21,413 lbs
Landing Weight: 20,586 lbs
Special mission kits: Galley, TAGS, RMS-301, EMU's, EMU TV receiver (for IBSS), 4 filled cryo tanks, PSA, payload bay liner, 6 new GPC's (IBM AP-101S) includeing a spare
PRIMARY PAYLOADS
AFP-675 - Science Pallet, mass: 10,203 lbs 1) CIRRIS-1A (see STS-4), AFGL-201 2) FAR-UV (Far Ultraviolet Camera), NRL-803, 3) URA (Uniformly Redundant Array), AFTAC-801, 4) HUP (Horizon Ultraviolet Program), AFGL-801A, 5) QINMS (Quadruple Ion-Neutral Mass Spectrometer), AFGL-304A
ISBB/SPAS-II - (Infared Background Signature Survey Payload) mass: 4,197 lbs 1) IBSS/SPAS-II (Shuttle Pallet Satellite) - 1991-031B 2) CIV (Critical Ionization Velocity expirement) Four Canisters of compressed gas for release and observation by IBSS/SPAS-II and monitor subsystem (mass 1,215 lbs), 3) CRO (Chemical Release Observation experiment - mass 1,307 lbs) 3 sub-satellites, 180 lbs. each, deployed & observed by IBSS/SPAS-II (CRO-A with MMH (1991-031F), CRO-B with UDMH (1931-031E), CRO-C with N2O4 (1991-031D))
STP-1 - mass, 4,288 lbs 1) UVLIM (ultraviolet Limb Imaging experiment), 2) ALFE (Advanced Liquid Feed Experiment), 3) SKIRT (Spacecraft Kinetic Infrared Test), 4) DSE (Data System Experiment), 5) APM (see STS-31R)
MPEC - USA-70/1991-031C Multipurpose Exp. Canister, carrying a classified deployable DOD sat. MPEC mass - 270 lbs.
SECONDARY PAYLOADS
Mid-deck CLOUDS (see STS-14) and RME-III-03 (see STS-51A)
SHUTTLE STACK COMPONENTS
SSME's: 2026 (1) - 1st use, 2030 (2) - 5th use, 2029 (3) - 4th use. At Tower Clear 104%
OMS Pods/Engines: LP-04/109 - Pod 9th use, Motor 6th use & RP-03/114 - Pod 13th use, Motor 6th use
ET: ET-46 (LWT-39)
SRB's: BI-043 (RSRM-15) - Set successfully recovered
SHUTTLE STACK COMPONENTS
Left - ?A Right - ?B
30 ? Fwd ? TEM3
30 ? Cyl ? 31
New ? Cyl ? 30
29 ? Cyl ? 28
New ? Cyl ? New
20 ? Cyl ? 31
31 ? Cyl ? 31
30 ? Att ? New
31 ? Stf ? New
31 ? Stf ? TEM4
30 ? Aft ? 31
SDI DOD Flight
MISSION MILESTONES:
26 September 1990 ET-46 arrives on dock KSC
18 October 1990 OV-103 returns to the OPF-1 following Mission-36/STS-41
13 December 1990 SRB stacking completed
18 December 1990 ET-46/SRB mate
9 February 1991 OV-103 rollover from OPF-1 to VAB High Bay 1 for stacking the next day
15 February 1991 Stack rollout to Pad 39A
16 February 1991 AFP-675 & IBSS/SPAS loaded into Discovery while on the pad
20 February 1991 TCDT countdown dress rehearsal conducted with crew aboard
28 February 1991 Stack ordered to roll back to VAB due to ET umbilical door hinge cracks on orbiter
4 March 1991 Payload transferred to PCR for storage
7 March 1991 Stack Rollback from Pad to VAB High Bay 1
12 March 1991 Orbiter demate from stack for inspection/repairs in VAB High Bay 1
14 March 1991 Rollover from VAB to OPF-2
25 March 1991 Rollover from OPF-2 to VAB for restacking in High Bay 1 two days later
1 April 1991 Stack returned to Pad 39A
5 April 1991 Payload reloaded into Orbiter while on Pad 39A
20 April 1991 Original "Call to stations" 43 hr countdown started 8:45 am EDT & astronaut arrival KSC
25 April 1991 Second "Call to stations" 43 hr countdown started at 8:45 am EDT
26 April 1991 Astronauts arrive at KSC once again
28 April 1991 Launch
6 May 1991 Landing at KSC/SLF, OV-103 returned to OPF same day
pre-shuttle missions. shuttle era missions.
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