🚀 go-pugleaf

Greetings and Salutations:

From: GIPP@gecrdvm1.crd.ge.com

>>     Liquid oxygen and  liquid  hydrogen  propellants  are  being
>>drained  from the external tank today.  Residual hydrogen will be

>What is done with the liquid ox and liquid hydrogen which is drained?
>does it go back into the supply depot, or is it considered
>contaminated and disposed of?

As much LOX & LH2 is drained back into the storage tanks at the pad (the
large white spheres) as possible.  In all actuality, the LH2 is so light
that it is pushed around.  When the ET is filled with LOX, they run pumps
to pump it uphill to the ET.  To drain LOX, the ET is just pressurized, and
it flows back into the storage tank.  To load LH2, all that is required is
the LH2 is run thru a vaporizer (just a set of pipes that exposes the LH2
to atmospheric temperatures and turns it to gas) and that is used to
pressurize the storage tank.  The LH2 then is pushed uphill to the ET.  To
unload LH2, the ET is pressurized, and it runs back to the storage tank.

This, of course, is a simplified version.  All of the pressure in the tanks
(4 of them) is carefully controlled so that the tank doesn't suck itself
in, or doesn't get too much pressure.


To revise my lauch dates (I just got aq correction recently...)

The next launch is sometime in August.  You may write to the following
address for a launch pass:

NASA Vehicle Pass
PA - Pass
Kennedy Space Center, FL
                       32899

In general, if you know the launch that you wish, ask for that launch.  If
you
know a general time frame, then ask for that time frame. 

When whatching a launch, listen to FM Station 91.5 (It is a local religious
station) or AM 580 out of Orlando (Thanx to Matthew DeLuca).

The following is the complete SST Manifest.  Of course dates for any
launches longer than a "while off" (you interpret) are probably not real
accurate.
            SPACE SHUTTLE MANIFEST (Preliminary Dated April 12, 1991
Manifest)

STS      Date    Orbiter/Flight    Payload
---------------------------------------------------------------------------

 43   25-Jul-91  Atlantis/9   TDRS-E  SSBUV-3
                              1100 EDT, 4 Hr. Window
 48   19-Sep-91  Discovery/13 UARS (Upper Atmosphere Research Satellite)
                              1700 EDT, 3 Hr-Window
 44   15-Nov-91  Atlantis/10  DSP (Defense Support Program) (IUS) / DOD
                              1600 EDT, 2 Hr-Window
---------------------------------------------------------------------------
 42   13-Jan-92  Discovery/14 IML-1 (Int-Microgravity Laboratory), GAS
Bridge
 45   10-Mar-92  Atlantis/11  ATLAS-1, SSBUV-4
 49   16-Apr-92  Endeavour/1  Intelsat VI Reboost, ASEM
 50   11-May-92  Columbia/12  USML-1(United States Microgravity
Laboratory),EDO
 46   29-Jun-92  Atlantis/12  TSS-1 (Tethered Satellite System), EURECA-1L
 47    3-Aug-92  Endeavour/2  SL-J (Spacelab Japan), GAS Bridge
 52    1-Sep-92  Columbia/13  LAGEOS II, USMP-1, CANEX
 53    9-Oct-92  Discovery/15 DOD-06
---------------------------------------------------------------------------
 55   27-Jan-93  Columbia/14  SL-D2 (LM+USS)
 51   22-Feb-93  Discovery/16 ACTS (TOS)/EURECA-1R (EURECA-A)
 56   22-Mar-93  Endeavour/4  ATLAS-02 (IG+1 PAL)/SSBUV-A01 SPTN-201-01
 57   23-Apr-93  Atlantis/13  TDRS-F (IUS)
 58   25-May-93  Columbia/15  SLS-02 (LM+EDO)
 59   15-Jun-93  Discovery/17 SPACEHAB-02 (SPACEHAB)/WSF-01 (Unique)/PL
OPPTY
 60   26-Jul-93  Endeavour/5  SAL-01 (PALL+MPE)
 61    1-Oct-93  Atlantis/14  LITE (PALLET)/SPAS-III (SPAS)
 62   22-Oct-93  Columbia/16  USMP-02 (MSL+MPES)/FTS-DTF-01/SPN-204
 63   19-Nov-93  Discovery/18 HST REV-01 (FSS+Unique SSE)
---------------------------------------------------------------------------
 64   25-Jan-94  Endeavour/6 
CRISTA-SPAS(ASTRO-SP)/ATLAS-03(IG+1PAL)/SSBUV-A02
 65   15-Feb-94  Atlantis/15  GEOSTAR-01(PAM-D2)/SPACEHAB-03(SPACEHAB)/PL
OPPTY
 66    8-Mar-94  Columbia/17  IML-02 (LM+EDO)
 67   11-Apr-94  Discovery/19 ISEM-02 (HH-M)/SPTN-201-02/PL OPPTY
 68   30-May-94  Atlantis/16  TPITS (PALLET)/USMP-03 (MSL+MPES)/PL OPPTY
 69   27-Jun-94  Columbia/18  SFU-RETR (N/A)/PL OPPTY
 70    1-Aug-94  Discovery/20 EURECA-2L
(EURECA-A)/SPACEHAB-04(SPACEHAB)/WSF-02
 71    3-Oct-94  Endeavour/7  SAL-02 (PALL+MPE)
 72   25-Oct-94  Atlantis/17  XTE (FSS)/EUVE RETA (FSS)
---------------------------------------------------------------------------
 73   25-Jan-95  Discovery/21 ATLAS-04 (IG+1 PAL)/WISO (MDM PALL)/SSBUV-A03
 74   15-Feb-95  Endeavour/8  SPACEHAB-05/GEOSTAR-02(PAM-D2)/EURECA-2A
 75    8-Mar-95  Atlantis/18  FLT OPPTY
 76   12-Apr-95  Columbia/19  USML-02 (LM+EDO)
 77    1-Jun-95  Endeavour/9  AAFE (Unique)/PL OPPTY
 78   23-Jun-95  Atlantis/19  USMP-04 (MSL+MPES)/WSF-03 (Unique)
 79    7-Aug-95  Columbia/20  SL-D3 (LM+USS)
 80   18-Sep-95  Discovery/22 SAL-03 (PALL+MPE)
 81    9-Oct-95  Endeavour/10 SSF/MB-02 (Unique)
 82   21-Nov-95  Columbia/21  SPACEHAB-06/SPTN-201-03/PL OPPTY
---------------------------------------------------------------------------
 83   19-Jan-96  Discovery/23 SSF/MB-03 (Unique)
 84    9-Feb-96  Endeavour/11 ATLAS-05 (IG+1 PAL) / SSBUV-A04
 85    1-Mar-96  Atlantis/20  SSF/MB-03 (Unique)
 86    9-Apr-96  Columbia/22  SLS-03 (LM+EDO)
 87    1-May-96  Discovery/24 SPACEHAB-07/GEOSTAR-03 (PAM-D2)/PL OPPTY
 88   30-May-96  Endeavour/12 SSF/MB04 (Unique)
 89   28-Jun-96  Atlantis/21  FLT OPPTY
 90   21-Aug-96  Columbia/23  USMP-05 (MSL+MPES)/WSF-04 (Unique)

ASEM       Assembly of Station by Extravehicular activity Methods
ATLAS      Atmospheric Laboratory for Applications and Science
CANEX      Canadian Experiments
CAPL       Capillary Pump Loop experiment
CETA       Crew and Equipment Translation Aid
CIRRIS     Cryogenic Infrared Radiance Instrument for Shuttle
CMSE       Candidate Materials Space Exposure (extended duration)
EDO        Extended Duration Orbiter
EURECA     European Retrievable Carrier
FLOATZONE  Floatzone crystal of Cadmium Telluride (CdTe)
FTS        Flight Telerobotic Servicer
GAS        Get Away Special
IBSS       Infrared Background Signature Survey
IEH        International Extreme-UV far-UV Hitchhiker
ISEM       ITA Standardised Experiment
LAGEOS     Laser Geodynamics Satellite
MPEC       Multi-Purpose Experiment Cannister
OAET       Office of Aeronautics, Exploration, and Technology
ORFEUS     Orbiting and Retrievable Far and Extreme Ultraviolet
Spectrometer
SHOOT      Super fluid Helium On Orbit Transfer demonstration
SPAS       Shuttle Pallet Satellite
SPTN       Shuttle Pointed autonomous research Tool for astronomy (aka
SPARTAN)
SRAD       Shuttle Radiator Assembly Demonstration
SSBUV      Shuttle Solar Backscatter Ultra-Violet instrument
STP        Space Test Program
STS        Space Transportation System
TPITS      Two Phase Integration Thermal System
USMP       United States Microgravity Payload
WSF        Wake Shield Facility



Contact Ken Hollis through these paths:
     ProLine:  gandalf@pro-electric
     ARPA:     crash!pro-electric!gandalf@nosc.mil
     UUCP:     crash!pro-electric!gandalf
     Internet: gandalf@pro-electric.cts.com