STS-47

STS-47

Spacelab in Endeavour's payload bay
Mission type	Microgravity research
Operator	NASA
COSPAR ID	1992-061A
SATCAT №	22120
Mission duration	7 days, 22 hours, 30 minutes, 23 seconds
Distance travelled	5,265,523 kilometers (3,271,844 mi)
Orbits completed	126
Spacecraft properties
Spacecraft	Space Shuttle Endeavour
Landing mass	99,450 kilograms (219,250 lb)
Payload mass	12,485 kilograms (27,525 lb)
Crew
Crew size	7
Members	Robert L. Gibson Curtis L. Brown, Jr. Mark C. Lee Jay Apt N. Jan Davis Mae C. Jemison Mamoru Mohri
Start of mission
Launch date	12 September 1992, 14:23:00.0680 (1992-09-12UTC14:23Z) UTC
Launch site	Kennedy LC-39B
End of mission
Landing date	20 September 1992, 12:53:24 (1992-09-20UTC12:53:25Z) UTC
Landing site	Kennedy SLF Runway 33
Orbital parameters
Reference system	Geocentric
Regime	Low Earth
Perigee	297 kilometres (185 mi)
Apogee	310 kilometres (190 mi)
Inclination	57.0 degrees
Left to right - Front row: Apt, Brown; Back row: Davis, Lee, Gibson, Jemison, Mohri Space Shuttle program ← STS-46 STS-52 →

STS-47 was the 50th Space Shuttle mission of the program, as well as the second mission of Space Shuttle Endeavour. The mission mainly involved conducting experiments in life and material sciences.

Crew

Backup crew

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

Mission highlights

Unimak Island as seen from Endeavour.

Spacelab-J—a joint NASA and National Space Development Agency of Japan (NASDA) mission using a manned Spacelab module—conducted microgravity investigations in materials and life sciences. The international crew, consisting of the first Japanese astronaut to fly aboard the Shuttle, the first African-American woman to fly in space and, contrary to normal NASA policy, the first married couple to fly on the same space mission (Lee and Davis), was divided into red and blue teams for around the clock operations. Spacelab-J included 24 materials science and 20 life sciences experiments, of which 35 were sponsored by NASDA, 7 by NASA and 2 collaborative efforts.

Ever since female space travelers became the norm during the 1980s, NASA instituted rules stipulating that husband/wife couples would not be launched together out of concern over disrupting in-flight morale. However, Mark Lee and Jan Davis had secretly married a few weeks before the launch of STS-47 and NASA was forced to waive this rule as it would not have been possible to cancel the mission or reassign crews at this point.

The first married couple in space created months of speculation and jibes from the media about the possibility of them having sexual relations in orbit, but NASA officials were not amused and vehemently shot down the rumors, noting among other things the lack of privacy in the cramped Shuttle cabin and the physics of zero gravity making intercourse difficult if not impossible. Davis and Lee, who later divorced, refused to answer queries about them engaging in intimate activities during the mission.

Materials science investigations covered such fields as biotechnology, electronic materials, fluid dynamics and transport phenomena, glasses 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.

Twelve Get Away Special (GAS) canisters (10 with experiments, 2 with ballast) were carried in the payload bay. Middeck experiments were: Israeli Space Agency Investigation About Hornets (ISAIAH), Solid Surface Combustion Experiment (SSCE), Shuttle Amateur Radio Experiment (SAREX II), Air Force Maui Optical Site (AMOS), and Ultraviolet Plume Imager (UVPI).

STS-47 Endeavour crewmembers inside Spacelab

Among the GAS Cansisters was G-102, sponsored by the Boy Scouts of America's Exploring Division in cooperation with the TRW Systems Integration Group, Fairfax, VA. The project was named Project POSTAR and was the first space experiment created entirely by members of the Boy Scouts of America.

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

Also on board were two experiments prepared by Ashford School in Kent, United Kingdom, which, at the time, was a girls-only school.^[2] 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.^[3]

See also

• List of human spaceflights
• List of Space Shuttle missions
• Nikon NASA F4
• 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
• STS-47 Video Highlights
• Project POSTAR