STS-92 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Discovery. STS-92 marked the 100th mission of the Space Shuttle and Discovery's 28th flight. It was launched from Kennedy Space Center, Florida, 11 October 2000.

Crew

PositionAstronaut
CommanderUnited States Brian Duffy Fourth and last spaceflight
PilotUnited States Pamela A. Melroy First spaceflight
Mission Specialist 1United States Leroy Chiao Third spaceflight
Mission Specialist 2 Flight EngineerUnited States William S. McArthur Third spaceflight
Mission Specialist 3United States Peter Wisoff Fourth and last spaceflight
Mission Specialist 4United States/Spain Michael E. López-Alegría Second spaceflight
Mission Specialist 5Japan Koichi Wakata, JAXA Second spaceflight

Spacewalks

EVA 1

  • Personnel: Chiao and McArthur
  • Start: 15 October 2000 – 14:27 UTC
  • End: 15 October 2000 – 20:55 UTC
  • Duration: 6 hours, 28 minutes

EVA 2

  • Personnel: López-Alegría and Wisoff
  • Start: 16 October 2000 – 14:15 UTC
  • End: 16 October 2000 – 21:22 UTC
  • Duration: 7 hours, 7 minutes

EVA 3

  • Personnel: Chiao and McArthur
  • Start: 17 October 2000 – 14:30 UTC
  • EVA 3 End: 17 October 2000 – 21:18 UTC
  • Duration: 6 hours, 48 minutes

EVA 4

  • Personnel: López-Alegría and Wisoff
  • Start: 18 October 2000 – 15:00 UTC
  • End: 18 October 2000 – 21:56 UTC
  • Duration: 6 hours, 56 minutes

Crew seat assignments

SeatLaunchLandingSeats 1–4 are on the flight deck. Seats 5–7 are on the mid-deck.
1Duffy
2Melroy
3WakataLopez-Alegria
4McArthur
5Wisoff
6Lopez-AlegriaWakata
7Chiao

Mission highlights

Launch of STS-92
Discovery lands at Edwards Air Force Base, 24 October 2000.
Illustration of the ISS after STS-92.
AttemptPlannedResultTurnaroundReasonDecision pointWeather go (%)Notes
15 Oct 2000, 9:38:26 pmScrubbed—Technical5 Oct 2000, 3:15 pm60Problems with external tank separation bolts and a main propulsion system valve on Discovery.
29 Oct 2000, 8:05:17 pmScrubbed3days 22hours 27minutesWeather9 Oct 2000, 9:00 am30High winds prevented pre-launch preparations.
310 Oct 2000, 7:39:36 pmScrubbed0days 23hours 34minutesTechnical10 Oct 2000, 6:30 pm​(T−00:20:00 hold)70A metal pin was found wedged in between the orbiter and external tank in an area that technicians could not access. There was a risk that the pin could dislodge during launch and damage the shuttle.
411 Oct 2000, 7:17:00 pmSuccess0days 23hours 37minutes80

STS-92 was an ISS assembly flight that brought the Z1 truss, Control Moment Gyros, Pressurized Mating Adapter-3 (PMA-3) (mounted on a Spacelab pallet) and two DDCU (Heat pipes) to the space station. The Z1 truss was the first exterior framework installed on the ISS and allowed the first U.S. solar arrays to be temporarily installed on Unity for early power during flight 4A. The Ku-band communication system supported early science capabilities and U.S. television on flight 6A. The CMGs (Control Moment Gyros) weigh about 27 kilograms (60lb) and provide non-propulsive (electrically powered) attitude control when activated on flight 5A, and PMA-3 provides shuttle docking port for solar array installation on flight 4A and Destiny Lab installation on flight 5A.

The mission included seven days of docked operations with the space station, four EVAs, and two ingress opportunities.

Over the course of four scheduled spacewalks, two teams of space walkers and an experienced robot arm operator collaborated to install the Z1 (Z for zenith port) truss structure on top of the U.S. Unity connecting node on the growing station and to deliver the third Pressurized Mating Adapter (PMA 3) to the ISS for the future berthing of new station components and to accommodate shuttle dockings.

The Z1 truss was the first permanent lattice-work structure for the ISS, very much like a girder, setting the stage for the future addition of the station's major trusses or backbones. The Z1 fixture also served as the platform on which the huge U.S. solar arrays were mounted on the next shuttle assembly flight, STS-97. The Z1 truss included many elements of the Communications and Tracking subsystem. The hardware included a Transmitter/Receiver/Controller (SGTRC) built by L3 Communications Systems-East in Camden, NJ. John Schina was the Chief Engineer of the ISS Program at L3.

The Z1 contains four large gyroscopic devices, called Control Moment Gyroscope (CMGs), which are used to maneuver the space station into the proper orientation on orbit once they were activated following the installation of the U.S. laboratory.

During the fourth spacewalk, astronauts Wisoff and López-Alegría tested the SAFER jet backpack, flying up to 50 feet while remaining tethered to the spacecraft.

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