STS-47 was the 50th NASA Space Shuttle mission of the program, as well as the second mission of the Space Shuttle Endeavour. The mission mainly involved conducting experiments in life and material sciences inside Spacelab-J, a collaborative laboratory inside the shuttle's payload bay sponsored by NASA and the National Space Development Agency of Japan (NASDA). This mission carried Mamoru Mohri, the first Japanese astronaut aboard the shuttle, Mae C. Jemison, the first African-American woman to go to space, and the only married couple to fly together on the shuttle, Mark C. Lee and N. Jan Davis, contrary to NASA policy.

STS-47

Spacelab Module LM2 in Endeavour's payload bay, serving as the Spacelab-J laboratory.
Names	Space Transportation System-50
Mission type	Microgravity research
Operator	NASA
COSPAR ID	1992-061A
SATCAT no.	22120
Mission duration	7 days, 22 hours, 30 minutes, 24 seconds
Distance travelled	5,265,523 km (3,271,844 mi)
Orbits completed	126
Spacecraft properties
Spacecraft	Space Shuttle Endeavour
Launch mass	117,335 kg (258,679 lb)
Landing mass	99,450 kg (219,250 lb)
Payload mass	12,485 kg (27,525 lb)
Crew
Crew size	7
Members	Robert L. Gibson Curtis L. Brown Jr. Mark C. Lee Jerome "Jay" Apt N. Jan Davis Mae C. Jemison Mamoru Mohri
Start of mission
Launch date	12 September 1992, 14:23:00 UTC
Launch site	Kennedy Space Center, LC-39B
Contractor	Rockwell International
End of mission
Landing date	20 September 1992, 12:53:24 UTC
Landing site	Kennedy Space Center, SLF Runway 33
Orbital parameters
Reference system	Geocentric orbit
Regime	Low Earth orbit
Perigee altitude	297 km (185 mi)
Apogee altitude	310 km (190 mi)
Inclination	57.02°
Period	90.00 minutes
Instruments
Air Force Maui Optical Station (AMOS) Israel Space Agency Investigation About Hornets (ISAIAH) Shuttle Amateur Radio Experiment (SAREX-II) Solid Surface Combustion Experiment (SSCE) Ultraviolet Plume Imager (UVPI)
STS-47 mission patch Back row: N. Jan Davis, Mark C. Lee, Robert L. Gibson, Mae C. Jemison, Mamoru Mohri Front row: Jerome "Jay" Apt, Curtis L. Brown Jr. Space Shuttle program ← STS-46 (49) STS-52 (51) →

Crew

Position	Crew Member
Commander	Robert L. Gibson Fourth spaceflight
Pilot	Curtis L. Brown Jr. First spaceflight
Mission Specialist 1	Mark C. Lee Second spaceflight
Mission Specialist 2	Jerome "Jay" Apt Second spaceflight
Mission Specialist 3	N. Jan Davis First spaceflight
Mission Specialist 4	Mae C. Jemison Only spaceflight
Payload Specialist 1	Mamoru Mohri , NASDA First spaceflight

Backup crew

Position	Astronaut
Payload Specialist 1 or 2	Chiaki Mukai, NASDA First spaceflight
Payload Specialist 1 or 2	Takao Doi, NASDA First spaceflight
Payload Specialist 1	Stanley L. Koszelak First spaceflight

Crew seating arrangements

Seat[1]	Launch	Landing	Seats 1–4 are on the Flight Deck. Seats 5–7 are on the Middeck.
S1	Gibson	Gibson
S2	Brown	Brown
S3	Lee	Davis
S4	Apt	Apt
S5	Davis	Lee
S6	Jemison	Jemison
S7	Mohri	Mohri

As female and male astronauts became more prominently integrated with the shuttle program, NASA enacted an unwritten rule that husband/wife couples would not be assigned to the same mission. However, when Lee's and Davis' marriage became known to NASA officials in January 1991, the officials decided to keep the assignment as is, given that both crewmembers already had important roles within the upcoming mission.[2] When asked at a NASA press conference if intimate activities would be taking place on the mission, Davis denied that possibility.[3]

Mission highlights

At the beginning of September, a problem with an oxygen line in the shuttle's main propulsion system was identified, however, it was resolved without forcing a postponement of the mission.[4]

STS-47 launched from Pad 39B at 10:23:00 a.m. EDT on 12 September 1992, and was the first on-time mission without launch delays since STS-61-B in 1985.[5]

The mission's primary payload was Spacelab-J — a joint mission between NASA and the National Space Development Agency of Japan (NASDA) — which used a crewed Spacelab module to conduct microgravity research in materials and life sciences. Like many previous missions, the international crew was divided into red and blue teams which would work in two 12-hour shifts for around-the-clock operations. Brown, Lee, and Mohri, were assigned to the red team, and would conduct experiments while Apt, Davis, and Jemison, assigned to the blue team, would rest, and vice versa. As the mission commander, Gibson was free to work with both teams.[6] Spacelab-J included 24 experiments in materials science and 20 life sciences experiments, the majority of which were sponsored by NASDA and NASA, while 2 were sponsored by collaborative civilian efforts.[7] The Payload Crew Training Manager was Homer Hickam, who also worked during the mission as a Crew Interface Coordinator to talk to the crew during their science experiments and relay any concerns from the scientists on the ground.[8]

Materials science investigations covered such fields as biotechnology, electronic materials, fluid dynamics and transport phenomena, glass and ceramics, metals and alloys, and acceleration measurements. Life sciences included experiments on human health, cell separation and biology, developmental biology, animal and human physiology and behavior, space radiation, and biological rhythms. Test subjects included the crew, Japanese koi fish (carp), cultured animal and plant cells, chicken embryos, fruit flies, fungi, plant seeds, frogs and frog eggs, and oriental hornets.[7]

Secondary Experiments

On the middeck, a variety of experiments were conducted, including the Israel Space Agency Investigation About Hornets (ISAIAH), the Solid Surface Combustion Experiment (SSCE), and the Shuttle Amateur Radio Experiment (SAREX II).[9]^: 4 External experiments using the Ultraviolet Plume Imager (UVPI) on the LACE satellite and observations at the Air Force Maui Optical Station (AMOS) were also conducted while Endeavour was in orbit.[7]

ISAIAH was the first microgravity experiment flown for the Israel Space Agency (ISA). Originating from Tel-Aviv University, it was intended to observe the effects of microgravity on oriental hornets and their ability to build combs in zero-g.[9]^: 28 However, a failure in the water system resulted in an unexpected rise of the humidity level in the experiment, which resulted in the deaths of 202 out of the 230 hornets and 103 pupae out of the 120 in the experiment. While some of the hornets in the bottom container of the experiment remained active through flight day 7, no new nests were created until after the mission's completion, and the average lifespan of the hornets that flew into space was considerably less than that of the control group. None of the hornet pupae that flew into space metamorphized.[10][11]

Twelve Get Away Special (GAS) canisters (10 with experiments, 2 with ballast) were carried in the payload bay. Among the GAS canisters was G-102, sponsored by the Boy Scouts of America's Exploring Division in cooperation with the TRW Systems Integration Group, Fairfax, Virginia. The project was named Project POSTAR and was the first space experiment created entirely by members of the Boy Scouts of America.[9][12]

Also on board were two experiments prepared by Ashford School of Art & Design in Kent, United Kingdom, which, at the time, was a girls-only school.[9] The school had won a competition run by Independent Television News. The experiments were contained in G-520. The first one injected a few grams of cobalt nitrate crystals to a sodium silicate to create a chemical garden in weightless condition. The growths, which were photographed 66 times as they developed, spread out in random directions, twisted, and, in some cases, formed spirals. A second experiment to investigate how Liesegang rings formed in space failed to operate correctly due to friction in parts of the mechanism. On its return, the experiment was exhibited in the London Science Museum.[13]

While in orbit, Jemison planned to speak from orbit on a live TV conference to Chicago grade-school students at an event hosted by NASA and the Chicago Museum of Science and Industry. The event was planned for 16 September 1992 at 7:00 p.m. central time.[14]

The mission, scheduled to end on 19 September 1992, was extended for one more day to complete certain experiments.[15]

Gallery

• 
  Launch of STS-47
• 
  STS-47 crew pose for a portrait inside the Spacelab-J module during the mission.
• 
  Eye of Hurricane Bonnie (1992) photographed onboard Endeavour.
• 
  Alternate crew and support staff photo, featuring the seven crewmembers and Sharon McDougle, front center, among others.

See also

• List of human spaceflights
• List of Space Shuttle missions
• Nikon NASA F4
• Spacelab
• Outline of space science
• Project POSTAR
• Space Shuttle

References

 This article incorporates public domain material from websites or documents of the National Aeronautics and Space Administration.

External links

• NASA mission summary Archived 9 August 2020 at the Wayback Machine
• STS-47 Post-flight Crew Narration
• Project POSTAR
• STS-47 Launch Flight and Landing Recap

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