STS-31

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STS-31
1990 s31 IMAX view of HST release.jpg
Discovery deploys the Hubble Space Telescope.
Names Space Transportation System-31
STS-31R
Mission type Hubble Space Telescope deployment
Operator NASA
COSPAR ID 1990-037A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 20579
Mission duration5 days, 1 hour, 16 minutes, 6 seconds (achieved)
Distance travelled3,328,466 km (2,068,213 mi)
Orbits completed80
Spacecraft properties
Spacecraft Space Shuttle Discovery
Launch mass117,586 kg (259,233 lb)
Landing mass85,947 kg (189,481 lb)
Payload mass11,878 kg (26,187 lb)
Crew
Crew size5
Members
Start of mission
Launch dateApril 24, 1990, 12:33:51  UTC
Rocket Space Shuttle Discovery
Launch site Kennedy Space Center, LC-39B
Contractor Rockwell International
End of mission
Landing dateApril 29, 1990, 13:49:57 UTC
Landing site Edwards Air Force Base,
Runway 22
Orbital parameters
Reference system Geocentric orbit
Regime Low Earth orbit
Perigee altitude 613 km (381 mi)
Apogee altitude 615 km (382 mi)
Inclination 28.45°
Period 96.70 minutes
Instruments
  • Air Force Maui Optical Site (AMOS)
  • Ascent Particle Monitor (APM)
  • IMAX Cargo Bay Camera (ICBC)
  • In-flight Radiation Dose Distribution (IDRD)
  • Protein Crystal Growth (PCG)
  • Radiation Monitoring Equipment III (RME III)
Sts31 flight insignia.png
STS-31 mission patch
Sts-31 crew.jpg
Charles Bolden, Steven Hawley, Loren Shriver, Bruce McCandless II, Kathryn D. Sullivan
←  STS-36 (34)
STS-41 (36) →
 

STS-31 was the 35th mission of NASA's Space Shuttle program. The primary purpose of this mission was the deployment of the Hubble Space Telescope (HST) into low Earth orbit. The mission used the Space Shuttle Discovery (the tenth mission for this orbiter), which lifted off from Launch Complex 39B on April 24, 1990, from Kennedy Space Center, Florida.

Contents

Following the Challenger accident clarification was required on mission numbering. As STS-51-L was also designated STS-33, future flights with the previous STS-26 through STS-33 designators would require the R in their documentation to avoid conflicts in tracking data from one mission to another.

Discovery's crew deployed the Hubble Space Telescope on April 25, 1990, and then spent the rest of the mission tending to various scientific experiments in the Shuttle's payload bay as well as operating a set of IMAX cameras to record the mission. Discovery's launch marked the first time since January 1986 that two Space Shuttles had been on the launch pad at the same time – Discovery on 39B and Columbia on 39A.

Crew

Position Astronaut
Commander Loren Shriver
Second spaceflight
Pilot Charles Bolden
Second spaceflight
Mission Specialist 1 Bruce McCandless II
Second and last spaceflight
Mission Specialist 2 Steven Hawley
Third spaceflight
Mission Specialist 3 Kathryn D. Sullivan
Second 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.
S1ShriverShriver
S2BoldenBolden
S3McCandlessSullivan
S4HawleyHawley
S5SullivanMcCandless

Crew notes

This mission was originally to be flown in August 1986 as STS-61-J using Atlantis, but was postponed due to the Challenger disaster. John W. Young was originally assigned to command this mission, [2] which would have been his seventh spaceflight, but was reassigned to an administrative position and was replaced by Loren J. Shriver in 1988. [3]

Mission highlights

Space Shuttle Discovery launches from LC-39B for STS-31 with Columbia on LC-39A in preparation for STS-35. STS-31 Launch - GPN-2000-000684.jpg
Space Shuttle Discovery launches from LC-39B for STS-31 with Columbia on LC-39A in preparation for STS-35.
HST in the cargo bay 1990 s31 IMAX view of HST in payload bay.jpg
HST in the cargo bay

STS-31 was launched on April 24, 1990, at 8:33:51 a.m. EDT. A launch attempt on April 10, 1990, was scrubbed at T-4 minutes for a faulty valve in auxiliary power unit (APU) number one. The APU was eventually replaced and the Hubble Space Telescope's batteries were recharged. On launch day, the countdown was briefly halted at T-31 seconds when Discovery's computers failed to shut down a fuel valve line on ground support equipment. Engineers ordered the valve closed and the countdown continued. [4]

The main purpose of this mission was to deploy Hubble. It was designed to operate above the Earth's turbulent and obscuring atmosphere to observe celestial objects at ultraviolet, visible and near-infrared wavelengths. The Hubble mission was a joint NASA-ESA (European Space Agency) effort going back to the late 1970s. [5] The rest of the mission was devoted to photography and onboard experiments. To launch HST into an orbit that guaranteed longevity, Discovery entered an orbit of around 613 × 615 km (381 × 382 mi). At one point during the mission, Discovery briefly reached an apogee of 621 km (386 mi), the highest altitude ever reached by a Shuttle orbiter. [6] The record height also permitted the crew to photograph Earth's large-scale geographic features not apparent from lower orbits. Motion pictures were recorded by two IMAX cameras, and the results appeared in the 1994 IMAX film Destiny in Space . [7] Experiments on the mission included a biomedical technology study, advanced materials research, particle contamination and ionizing radiation measurements, and a student science project studying zero gravity effects on electronic arcs. Discovery's reentry from its higher than usual orbit required a deorbit burn of 4 minutes and 58 seconds, the longest in Shuttle history up to that time. [8] Discovery also orbited the Earth 80 times during the mission. [8]

During the deployment of Hubble, one of the observatory's solar arrays stopped as it unfurled. While ground controllers searched for a way to command HST to unreel the solar array, Mission Specialists McCandless and Sullivan began preparing for a contingency spacewalk in the event that the array could not be deployed through ground control. The array eventually came free and unfurled through ground control, while McCandless and Sullivan were pre-breathing inside the partially depressurized airlock. [9]

Secondary payloads included the IMAX Cargo Bay Camera (ICBC) to document operations outside the crew cabin, and a handheld IMAX camera for use inside the orbiter. Also included were the Ascent Particle Monitor (APM) to detect particulate matter in the payload bay; a Protein Crystal Growth (PCG) experiment to provide data on growing protein crystals in microgravity, Radiation Monitoring Equipment III (RME III) to measure gamma ray levels in the crew cabin; Investigations into Polymer Membrane Processing (IPMP) to determine porosity control in the microgravity environment, and an Air Force Maui Optical Site (AMOS) experiment. [8]

The mission marked the flight of an 5 kg (11 lb) human skull, which served as the primary element of "Detailed Secondary Objective 469", also known as the In-flight Radiation Dose Distribution (IDRD) experiment. This joint NASA/DoD experiment was designed to examine the penetration of radiation into the human cranium during spaceflight. The female skull was seated in a plastic matrix, representative of tissue, and sliced into ten layers. Hundreds of thermo-luminescent dosimeters were mounted in the skull's layers to record radiation levels at multiple depths. This experiment, which also flew on STS-28 and STS-36, was located in the shuttle's mid-deck lockers on all three flights, recording radiation levels at different orbital inclinations. [10]

Discovery landed on Runway 22 at Edwards Air Force Base in California April 29, 1990, at 6:49:57 a.m. PDT. The landing had a rollout distance of 2,705 m (8,875 ft) took 61 seconds, and marked the first use of carbon brakes on a shuttle. Discovery was returned to Kennedy Space Center after STS-31 on May 7, 1990. [11]

AttemptPlannedResultTurnaroundReasonDecision pointWeather go (%)Notes
110 Apr 1990, 12:00:00 amscrubbed—technical ​(T-4 minutes)Faulty valve in Auxiliary power unit (APU) Number One. [4]
224 Apr 1990, 12:33:51 pmdelayed, successful14 days, 12 hours, 34 minutestechnical ​(T-31 seconds)Countdown was held at T-31 seconds when a fuel valve line on ground support equipment failed to shut automatically. The valve was shut manually and the countdown was resumed. [4]

Wake-up calls

NASA began a tradition of playing music to astronauts during the Project Gemini, which was first used to wake up a flight crew during Apollo 15. Each track is specially chosen, often by their families, and usually has a special meaning to an individual member of the crew, or is applicable to their daily activities. [12]

Flight DaySongArtist/Composer
Day 2"Space is Our World"Private Numbers
Day 3"Shout" Otis Day and the Knights
Day 4"Kokomo" Beach Boys
Day 5"Cosmos" Frank Hayes
Day 6"Rise and Shine" Raffi

See also

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References

  1. ↑ Becker, Joachim. "Spaceflight mission report: STS-31". Spacefacts. Archived from the original on January 7, 2021. Retrieved February 26, 2014.
  2. ↑ Janson, Bette R. (March 1, 1988). Ritchie, Eleanor H.; Saegesser, Lee D. (eds.). Astronautics and Aeronautics, 1985: A Chronology (PDF). Washington, D.C.: United States Government Printing Office. p. 282.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  3. ↑ Carr, Jeffry (March 17, 1988). "JSC News Release Log 1988" (PDF). Lyndon B. Johnson Space Center. Houston, Texas: NASA. p. 88-008. Archived (PDF) from the original on February 25, 2017.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  4. 1 2 3 "Misson Safety Evaluation Report for STS-31 - Postflight Edition" (PDF). Washington, D.C.: NASA Office of Safety, Reliability, Maintainability and Quality Assurance. October 15, 1990. p. 7-1. Archived (PDF) from the original on January 7, 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  5. ↑ Gavaghan, Helen (July 7, 1990). "Design flaw cripples Hubble telescope". No. 1724. New Scientist. Archived from the original on January 7, 2021.
  6. ↑ McDowell, Jonathan [@planet4589] (September 16, 2021). "Here is a comparison of the STS-31 and STS-82 TLE data (apogee and perigee given in 'conventional height', i.e. geocentric radius minus 6378 km). STS-31 clearly a tiny bit higher, as can be seen in the zoomed-in second plot" (Tweet). Retrieved September 16, 2021– via Twitter.
  7. ↑ "Camera, ICBC, 70mm, IMAX". National Air and Space Museum. Smithsonian Institution. Archived from the original on January 7, 2021. Retrieved January 7, 2021.
  8. 1 2 3 "STS-31 Space Shuttle Mission Report" (PDF). NASA. May 1990. Archived (PDF) from the original on January 7, 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  9. ↑ Goodman, John L.; Walker, Stephen R. (January 31, 2009). Hubble Servicing Challenges Drive Innovation of Shuttle Rendezvous Technique (PDF). 32nd Annual AAS Guidance and Control Conference. Breckenridge, Colorado: NASA. p. 6. Archived (PDF) from the original on January 7, 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  10. ↑ MacKnight, Nigel (December 31, 1991). Space Year 1991: The Complete Record of the Year's Space Events. Osceola, Wisconsin: Motorbooks International. p. 41. ISBN   978-0879384821.
  11. ↑ Ryba, Jeanne (November 23, 2007). "STS-31". Mission Archives. NASA. Archived from the original on January 7, 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  12. ↑ Fries, Colin (March 13, 2015). "Chronology of Wakeup Calls" (PDF). History Division. NASA. Archived from the original (PDF) on January 5, 2021. Retrieved January 5, 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
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