STS-43

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STS-43
TDRS-E deployment from STS-43.jpg
Atlantis deploying TDRS-E.
Names Space Transportation System-42
Mission type TDRS-E satellite deployment
Technology
Operator NASA
COSPAR ID 1991-054A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 21638
Mission duration8 days, 21 hours, 21 minutes, 25 seconds
Distance travelled5,955,217 km (3,700,400 mi)
Orbits completed142
Spacecraft properties
Spacecraft Space Shuttle Atlantis
Launch mass117,650 kg (259,370 lb)
Landing mass89,239 kg (196,738 lb)
Payload mass21,067 kg (46,445 lb)
Crew
Crew size5
Members
Start of mission
Launch dateAugust 2, 1991, 15:01:59  UTC
Rocket Space Shuttle Atlantis
Launch site Kennedy Space Center, LC-39A
Contractor Rockwell International
End of mission
Landing dateAugust 11, 1991, 12:23:25 UTC
Landing site Kennedy Space Center,
SLF Runway 15
Orbital parameters
Reference system Geocentric orbit
Regime Low Earth orbit
Perigee altitude 301 km (187 mi)
Apogee altitude 306 km (190 mi)
Inclination 28.46°
Period 90.60 minutes
Instruments
  • Optical Communications Through Windows (OCTW)
  • Solid Surface Combustion Experiment (SSCE)
  • Space Station Heat Pipe Advanced Radiator Element (SHARE II)
  • Shuttle Solar Backscatter Ultra-Violet (SSBUV)
  • Tank Pressure Control Equipment (TPCE)
Sts-43-patch.png
STS-43 mission patch
STS-43 Official crew portrait.jpg
Shannon Lucid, James C. Adamson, John E. Blaha, G. David Low, Michael A. Baker
  STS-40 (41)
STS-48 (43) 
 

STS-43, the ninth mission for Space Shuttle Atlantis, was a nine-day mission whose primary goal was launching the TDRS-E satellite (TDRS-5). The flight also tested an advanced heatpipe radiator for potential use on the then-future space station and conducted a variety of medical and materials science investigations.

Contents

Crew

Position Astronaut
Commander John E. Blaha
Third spaceflight
Pilot Michael A. Baker
First spaceflight
Mission Specialist 1 Shannon Lucid
Third spaceflight
Mission Specialist 2 G. David Low
Second spaceflight
Mission Specialist 3 James C. Adamson
Second and last spaceflight

Crew seating arrangements

Seat [1] LaunchLanding Space Shuttle seating plan.svg
Seats 1–4 are on the Flight Deck. Seats 5–7 are on the Middeck.
S1BlahaBlaha
S2BakerBaker
S3LucidAdamson
S4LowLow
S5AdamsonLucid

Preparations and launch

The launch took place on August 2, 1991, 11:01:59 a.m. EDT. Launch was originally set for July 23, 1991, but was moved to July 24 to allow time to replace a faulty integrated electronics assembly that controls orbiter/external tank separation. The mission was postponed again about five hours before liftoff on July 24, 1991, due to a faulty main engine controller on the number three main engine. The controller was replaced and retested; launch was reset for August 1, 1991. Liftoff set for 11:01 a.m. delayed due to cabin pressure vent valve reading and postponed at 12:28 p.m. due to unacceptable return-to-launch site weather conditions. Launch finally occurred on August 2, 1991, without further delays.[ citation needed ]

Mission highlights

Launch of Space Shuttle Atlantis from the Kennedy Space Center STS-43 Launch - GPN-2000-000731.jpg
Launch of Space Shuttle Atlantis from the Kennedy Space Center
TDRS-E deployment from STS-43 Sts043-601-033.jpg
TDRS-E deployment from STS-43
Atlantis passes over Florida. SHARE-II is prominent on the left. 1991 s43 Atlantis over Florida.jpg
Atlantis passes over Florida. SHARE-II is prominent on the left.
Crewmembers pose for on-orbit portrait in the middeck of Atlantis Sts-43crew.jpg
Crewmembers pose for on-orbit portrait in the middeck of Atlantis

The primary payload, TDRS-E, attached to an Inertial Upper Stage (IUS), was deployed about six hours into flight, and the IUS propelled the satellite into geosynchronous orbit. TDRS-5 became the fourth member of the orbiting TDRS cluster. Secondary payloads were Space Station Heat Pipe Advanced Radiator Element (SHARE II); Shuttle Solar Backscatter Ultra-Violet (SSBUV) instrument; Tank Pressure Control Equipment (TPCE) and Optical Communications Through Windows (OCTW). Other experiments included Auroral Photography Experiment (APE-B) Protein Crystal Growth Ill (PCG Ill); Bioserve / Instrumentation Technology Associates Materials Dispersion Apparatus (BIMDA); Investigations into Polymer Membrane Processing (IPMP); Space Acceleration Measurement System (SAMS); Solid Surface Combustion Experiment (SSCE); Ultraviolet Plume imager (UVPI); and the Air Force Maui Optical Site (AMOS) experiment. [2]

TDRS-E, which became TDRS-5 on orbit, was successfully boosted to geosynchronous orbit at more than 22,000 miles (35,400 km (22,000 mi)) above Earth by two firings of the Inertial Upper Stage (IUS) booster, the last of which occurred approximately 12½ hours into the mission. TDRS then deployed its antennas and solar panels, and separation from the IUS took place less than 45 minutes later.

The TDRS network of satellites provides the vital communication link between Earth and low-orbiting spacecraft such as the Space Shuttle. Until the STS-43 deployment, there were three TDRS spacecraft on orbit above the equator: two were in the west position over the Pacific Ocean, southwest of Hawaii. TDRS-4 was in the east position over the northeast corner of Brazil. TDRS-B was lost in the Challenger accident in 1986. After STS-43, the two satellites in the west became on-orbit spares; TDRS-5, after activation, checkout and calibration, officially became the primary provider of services in the west location on October 7, 1991. It was stationed at 175° west longitude.

Previously, orbiting spacecraft could communicate with Earth only when in sight of a ground tracking station – about 15 percent of each orbit. The TDRS network allows communication from 85% to 100% of an orbit, depending on the spacecraft's altitude.

The crew was kept busy with the operation of varied experiments during the nine-day flight. The Space Station Heat Pipe Advanced Radiator Element (SHARE-II) experiment tested a natural cooling process for transferring thermal energy that could serve as a cooling system for Space Station Freedom. The Solid Surface Combustion Experiment (SSCE) provided some answers about how fire behaves in microgravity. The crew also activated other previously flown materials science experiments and participated in medical experiments in support of long-duration flights. One test showed that optical fibers could provide video and audio links between the flight deck and the payload bay.

Crew members in space and flight controllers on the ground demonstrated their ingenuity when they adapted a camera part to replace one that had not been packed for the mission.

The mission was also notable for being the first one to send an email from space. On August 9, 1991, astronauts Lucid and Adamson used AppleLink to write an email from a Macintosh Portable addressed to Marsha S. Ivins at Johnson Space Center. [3] The message read:

Hello Earth! Greetings from the STS-43 crew. This is the first AppleLink from space. Having a GREAT time, wish you were here, ... send cryo and RCS! Hasta la vista, baby, ... we'll be back!

The crew experienced some minor problems, none of them critical to the safety or success of the mission. A cooling system for Auxiliary Power Unit (APU 2) failed to activate during an on-orbit test. APU 2 is one of three redundant systems which provide hydraulic pressurization to orbiter steering systems during entry and landing. APU 2 was still available for use in landing.

Atlantis landed on August 11, 1991, at 8:23:25 a.m. EDT, on Runway 15, at Kennedy Space Center.[ citation needed ]

Mission insignia

According to the mission's official Press Kit, the STS-43 insignia portrays the evolution and continuity of the U.S. space program by highlighting thirty years of American crewed spaceflight experience, from Project Mercury to the Space Shuttle. The emergence of the shuttle Atlantis from the outlined configuration of the Mercury space capsule commemorates this special relationship. The energy and momentum of launch are conveyed by the gradations of blue which mark the shuttle's ascent from Earth to space. Once in Earth orbit, Atlantis' cargo bay opens to reveal the Tracking and Data Relay Satellite (TDRS) which appears in gold emphasis against the white wings of Atlantis and the stark blackness of space. As primary mission objective, the Tracking and Data Relay Satellite System (TDRSS) will enable almost continuous communication from Earth to space for future space shuttle missions. The stars on the insignia are arranged to suggest this mission's numerical designation, with four stars left of Atlantis and three to the right. [4]

Wake-up calls

NASA began a tradition of playing music to astronauts during the Project Gemini, and first used music to wake up a flight crew during Apollo 15. [5] Each track is specially chosen, often by the astronauts' families, and usually has a special meaning to an individual member of the crew, or is applicable to their daily activities.

DaySongArtist/ComposerPlayed for
Day 2Back in the High LifeSteve Winwood
Day 3Excerpts from "Dances with the Wolves" soundtrackJames Adamson
Day 4Custom music medley sung by friends of the STS-43 crew
from Rockwell-Downey, in California.
Day 5Music of the Clear Lake High School Orchestra playing selections from "Phantom of the Opera".
Commander John Blaha's daughter, Caroline, plays in the orchestra.
Andrew Lloyd WebberJohn Blaha
Day 6What a Wonderful WorldLouis Armstrong
Day 7Cowboy in the Continental SuitChris LeDouxJames Adamson
Day 8Washington and Lee University fight songG. David Low
Day 9Sounds from Shannon Lucid's backyard

See also

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References

  1. "STS-43". Spacefacts. Retrieved February 26, 2014.
  2. "NASA - STS-43".
  3. "Macintosh Portable: Used in Space Shuttle". support.apple.com. Retrieved August 29, 2018.
  4. "NASA - Johnson Space Center History" (PDF). NASA.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  5. Fries, Colin. "Chronology of wakeup calls" (PDF).PD-icon.svg This article incorporates text from this source, which is in the public domain .