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1993-04-20
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"930418.DFC" (6719 bytes) was created on 04-18-93
18-Apr-93 Daily File Collection
These files were added or updated between 17-Apr-93 at 21:00:00 {Central}
and 18-Apr-93 at 21:00:14.
=--=--=START=--=--= NASA Spacelink File Name:6_2_2_43_8.TXT
NOTE: This file is too large {22775 bytes} for inclusion in this collection.
The first line of the file:
STS-55 TV SKED REV
STS-55 TV SKED B
Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61
=--=--=-END-=--=--=
=--=--=START=--=--= NASA Spacelink File Name:6_2_2_44_12_42.TXT
STS-56 MCC Status Report #23
MISSION CONTROL CENTER
STS-56 Status Report #23
Saturday, April 17,1993, 7 a.m. CDT
Discovery touched down at 6:37:19 a.m. CDT on Kennedy Space Center's runway 33
this morning to end shuttle mission STS-56 with a trouble-free trip home.
Nose gear touchdown came at 6:37:34 a.m. CDT and wheels stop came at 6:38:21
a.m. CDT, giving mission STS-56 an official duration of 9 days, 6 hours, 9
minutes and 21 seconds. Discovery completed 148 orbits and traveled an
estimated 3,853,997 statute miles.
Discovery's crew will return to Houston today, with an estimated time of
arrival at Ellington Field's NASA Hangar 990 of 3:30 p.m. CDT.
--end--
Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61
=--=--=-END-=--=--=
=--=--=START=--=--= NASA Spacelink File Name:6_2_2_44_12_43.TXT
Final MSFC ATLAS-2 STATUS REPORT
ATLAS 2 Public Affairs Status Report #19
6:00 a.m. CDT, April 17, 1993
9/05:31 MET
Spacelab Mission Operations Control
Marshall Space Flight Center
Huntsville, Alabama
Five of seven instruments aboard the second Atmospheric Laboratory
for Applications and Science (ATLAS 2) mission took advantage of an
extra day in orbit to gain additional data. The Solar Spectrum
Measurement (SOLSPEC), the Measurement of the Solar Constant
(SOLCON), Active Cavity Radiometer Irradiance Monitor (ACRIM) and
Atmospheric Trace Molecule Spectroscopy (ATMOS) experiments were
deactivated shortly after 10:50 p.m. CDT. The co-manifested
Shuttle Solar Backscatter Ultraviolet (SSBUV) was deactivated
around 11:10 p.m. CDT. Principal and co-investigators from five
nations will be analyzing their data for months to come in an
effort to understand more about the relationship between the Earth,
sun and the complex processes taking place in the middle
atmosphere.
The Solar Spectrum Measurement (SOLSPEC) instrument ran extremely
well, and remote operations from Brussels were very successful
during ATLAS 2. SOLSPEC took correlative measurements with a
similar instrument aboard the free-flying European Retrievable
Carrier (EURECA) satellite. Preliminary comparisons between
ATLAS 1 and ATLAS 2 data show consistent results, which will allow
scientists to investigate variations in solar activity over the
past year.
Another solar instrument, the Measurement of the Solar Constant
(SOLCON), ran extremely well throughout this mission. All but one
set of commands to the SOLCON instrument were sent from the remote
site in Brussels. Preliminary solar irradiance measurements from
SOLCON show that the data from ATLAS 2 closely agrees with data
being received from the EURECA satellite and from another ATLAS 2
instrument, the Active Cavity Radiometer Irradiance Monitor
(ACRIM).
The ACRIM science team has labeled this mission a "total success"
as far as their instrument and data collection are concerned.
There were two pre-mission goals for ACRIM -- to do correlative
measurements with the Upper Atmosphere Research Satellite (UARS)
and perform as many solar constant measurements as the mission
would allow. Both of these objectives have been met.
The Solar Ultraviolet Spectral Irradiance Monitor (SUSIM)
instrument collected solar data during a total of 24 solar-pointing
orbits. This primary solar science objective was performed to make
comparisons with the SUSIM instrument on UARS. SUSIM also met a
secondary objective of capturing sunrise and sunset occultations to
obtain ozone profiles.
Scientists for the Atmospheric Trace Molecule Spectroscopy (ATMOS)
investigation are looking forward to analyzing the sunset and
sunrise data contained on their instrument's dedicated tape
recorder. The Spacelab High Data Rate Recorder also was used to
store ATMOS data and this information was downlinked using the
Tracking and Data Relay Satellite System. The night launch of
Discovery provided ATMOS with the unique opportunity to make
detailed measurements of the Artic stratosphere.
The Millimeter-wave Atmospheric Sounder (MAS) science team overcame
an early-mission problem with their pointing system, using a
software patch. Near-real-time data analysis has been done at the
Spacelab Mission Operations Control center, showing almost
"publication quality" water vapor and ozone profile retrievals.
MAS investigators reported that ATLAS 2 data appears to be of
better quality than that collected during ATLAS 1 in 1992.
The fifth flight for the SSBUV experiment provided a wealth of
information for the science team from Goddard Space Flight Center,
Maryland. A preliminary assessment of measurements of ozone
processed during the ATLAS 2 flight is consistent with the data
being collected by free-flying ozone-sensing satellites. SSBUV
also performed some experimental measurements of sulfur dioxide
over industrialized areas of the eastern United States, Europe and
eastern Asia.
Dr. Steve Smith, Assistant Mission Scientist for ATLAS 2, summed up
the activities by saying, "During this mission, there was a
tremendous amount of cooperation between the science teams to
optimize opportunities in the presence of technical difficulties,
and with the crew, to enhance the science. Our science targets
also cooperated -- the sun was fairly quiet, to the delight of the
solar observers, and the dynamic atmosphere of the Northern
Hemisphere, will make data analysis very interesting, from a
stratospheric chemistry point of view."
Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61
=--=--=-END-=--=--=
=--=--=START=--=--= NASA Spacelink File Name:8_3.TXT
NOTE: This file is too large {17716 bytes} for inclusion in this collection.
The first line of the file:
NASA TEACHER RESOURCE CENTER TRCN NETWORK
Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61
=--=--=-END-=--=--=
=--=--=START=--=--= NASA Spacelink File Name:9_3_18.TXT
NOTE: This file is too large {134782 bytes} for inclusion in this collection.
The first line of the file:
Microgravity
Source:NASA Spacelink Modem:205-895-0028 Internet:192.149.89.61
=--=--=-END-=--=--=
=--=END OF COLLECTION---COLLECTED 5 FILES---COMPLETED 21:05:46=--=