STS-91

Last updated

STS-91
STS-91 Landing.jpg
Discovery lands at Kennedy, concluding the last mission in the Shuttle–Mir program
Names Space Transportation System-91
Mission type Shuttle-Mir
Operator NASA
COSPAR ID 1998-034A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 25356
Mission duration9 days, 19 hours, 54 minutes, 2 seconds
Spacecraft properties
Spacecraft Space Shuttle Discovery
Landing mass117,861 kilograms (259,839 lb)
Payload mass16,537 kilograms (36,458 lb)
Crew
Crew size6 up
7 down
Members
Landing
Start of mission
Launch date2 June 1998, 22:06:24 (1998-06-02UTC22:06:24Z) UTC
Launch site Kennedy LC-39A
End of mission
Landing date12 June 1998, 18:00:18 (1998-06-12UTC18:00:19Z) UTC
Landing site Kennedy SLF Runway 15
Orbital parameters
Reference system Geocentric
Regime Low Earth
Perigee altitude 350 kilometres (220 mi)
Apogee altitude 373 kilometres (232 mi)
Inclination 51.7 degrees
Period 91.8 min
Docking with Mir
Docking port SO  starboard
Docking date4 June 1998, 16:58 UTC
Undocking date8 June 1998, 16:01 UTC
Time docked3 days, 23 hours, 3 minutes
Sts-91-patch.png STS-91 crew.jpg
Left to right – Front: Gorie, Precourt; Back: Lawrence, Chang-Diaz, Kavandi, Ryumin, Thomas
  STS-90 (90)
STS-95 (92) 
 

STS-91 was the final Space Shuttle mission to the Mir space station. It was flown by Space Shuttle Discovery, and launched from Kennedy Space Center, Florida, on 2 June 1998. [1]

Contents

Crew

Position Launching AstronautLanding Astronaut
Commander Flag of the United States.svg Charles J. Precourt
Fourth and last spaceflight
Pilot Flag of the United States.svg Dominic L. Pudwill Gorie
First spaceflight
Mission Specialist 1 Flag of Costa Rica.svg / Flag of the United States.svg Franklin R. Chang-Diaz
Sixth spaceflight
Mission Specialist 2 Flag of the United States.svg Wendy B. Lawrence
Third spaceflight
Mission Specialist 3 Flag of the United States.svg Janet L. Kavandi
First spaceflight
Mission Specialist 4 Flag of Russia.svg Valery Ryumin, RKA
Fourth and last spaceflight
Mission Specialist 5None Flag of Australia (converted).svg / Flag of the United States.svg Andrew S. W. Thomas
EO-25
Second spaceflight

Mission highlights

STS-91 marked the final Shuttle/Mir Docking Mission, as well as the only such docking for Discovery. This Phase 1 Program was a precursor to the International Space Station maintaining a continuous American presence in space and developing the procedures and hardware required for an international partnership in space.

The mission was the first to use the super lightweight external tank (SLWT) which was the same size, at 154 feet (47 m) long and 27 feet (8.2 m) in diameter, as the external tank used on previous launches, but 7,500 pounds (3,400 kg) lighter. The tank was made of an aluminium lithium alloy and the tank's structural design had also been improved making it 30 percent stronger and 5 percent less dense. The walls of the redesigned hydrogen tank were machined in an orthogonal waffle-like pattern, providing more strength and stability than the previous design. These improvements would later provide additional payload capacity to the International Space Station.

Docking of Discovery to Mir, the first for that orbiter, occurred at 16:01 UTC, 4 June 1998 at an altitude of 208 miles. Hatches opened at 2:34 pm the same day. At hatch opening, Andy Thomas officially became a member of Discovery's crew, completing 130 days of living and working on Mir. The transfer wrapped up a total of 907 days spent by seven U.S. astronauts aboard the Russian space station as long-duration crew members. During the next four days, the Mir 25 and STS-91 crews transferred more than 500 kilograms (1,100 lb) of water, and almost 2,130 kilograms (4,700 lb) of cargo experiments and supplies were exchanged between the two spacecraft. During this time, long-term U.S. experiments aboard the Mir were moved into Discovery's middeck locker area and the SPACEHAB single module in the orbiter's payload bay, including the Space Acceleration Measurement System (SAMS) and the tissue engineering co-culture (COCULT) investigations, as well as two crystal growth experiments. The crews also conducted Risk Mitigation Experiments (RMEs) and Human Life Sciences (HLS) investigations. When the hatches closed for undocking at 9:07 am, 8 June, and the spacecraft separated at 12:01 pm that day, the final Shuttle-Mir docking mission was concluded and Phase 1 of the International Space Station (ISS) program came to an end.

Mir as seen from Discovery after undocking Mir on 12 June 1998edit1.jpg
Mir as seen from Discovery after undocking

STS-91 also carried a prototype of the Alpha Magnetic Spectrometer (AMS) into space. The AMS, designed to look for dark and missing matter in the universe, was powered up on Flight Day 1. Data originally planned to be sent to ground stations through Discovery's Ku-band communications system was recorded on board because of a problem with the Ku-band system that prevented it from sending high-rate communications, including television signals, to the ground. The system was able to receive uplink transmissions. On 3 June 1998 the crew was able to set up a bypass system that allowed AMS data to be downlinked via S-band/FM communications when the orbiter came within range of a ground station. Data that could not be recorded by ground stations was recorded on board throughout the mission.

The Ku-band system failure was determined to be located in a component that was not accessible to the crew. The failure prevented television transmission throughout the mission. Television broadcasts from Mir were prevented by a problem between a Russian ground station and the mission control center outside Moscow, limiting communications to audio only on NASA television.

Other experiments conducted by the Shuttle crew during the mission included a checkout of the orbiter's robot arm to evaluate new electronics and software and the Orbiter Space Vision System for use during assembly missions for the ISS. Also on board in the payload bay were eight Get Away Special experiments, while combustion, crystal growth and radiation monitoring experiments were conducted in Discovery's mid-deck crew cabin area.

See also

Related Research Articles

<span class="mw-page-title-main">STS-39</span> 1991 American crewed spaceflight for the Department of Defense

STS-39 was the twelfth mission of the NASA Space Shuttle Discovery, and the 40th orbital shuttle mission overall. The primary purpose of the mission was to conduct a variety of payload experiments for the U.S. Department of Defense (DoD).

<span class="mw-page-title-main">STS-63</span> 1995 American crewed spaceflight to Mir

STS-63 was the second mission of the US/Russian Shuttle-Mir Program, which carried out the first rendezvous of the American Space Shuttle with Russia's space station Mir. Known as the 'Near-Mir' mission, the flight used Space Shuttle Discovery, which lifted off from launch pad 39B on 3 February 1995 from Kennedy Space Center, Florida. A night launch and the 20th mission for Discovery, it marked the first time a Space Shuttle mission had a female pilot, Eileen Collins, and the first EVAs for both a UK born astronaut, Michael Foale, and a US astronaut of African heritage, Bernard A. Harris, Jr. It also carried out the successful deployment and retrieval of the Spartan-204 platform, along with the scheduled rendezvous and flyaround of Mir, in preparation for STS-71, the first mission to dock with Mir.

<span class="mw-page-title-main">STS-71</span> 1995 American crewed spaceflight to Mir

STS-71 was the third mission of the US/Russian Shuttle-Mir Program and the first Space Shuttle docking to Russian space station Mir. It started on June 27, 1995, with the launch of Space Shuttle Atlantis from launchpad 39A at the Kennedy Space Center in Florida. The Shuttle delivered a relief crew of two cosmonauts Anatoly Solovyev and Nikolai Budarin to the station and recovered Increment astronaut Norman Thagard. Atlantis returned to Earth on July 7 with a crew of eight. It was the first of seven straight missions to Mir flown by Atlantis, and the second Shuttle mission to land with an eight-person crew after STS-61-A in 1985.

<span class="mw-page-title-main">STS-74</span> 1995 American crewed spaceflight to Mir

STS-74 was the fourth mission of the US/Russian Shuttle-Mir Program, and the second docking of the Space Shuttle with Mir. Space Shuttle Atlantis lifted off from Kennedy Space Center launch pad 39A on 12 November 1995. The mission ended 8 days later with the landing of Atlantis back at Kennedy. It was the second in a series of seven straight missions to the station flown by Atlantis.

<span class="mw-page-title-main">STS-79</span> 1996 American crewed spaceflight to Mir

STS-79 was the 17th flight of Space Shuttle Atlantis, and the 79th mission of the Space Shuttle program. The flight saw Atlantis dock with the Russian space station Mir to deliver equipment, supplies and relief personnel. A variety of scientific experiments were also conducted aboard Atlantis by her crew. It was the first shuttle mission to rendezvous with a fully assembled Mir, and the fourth rendezvous of a shuttle to the space station.

<span class="mw-page-title-main">STS-89</span> 1998 American crewed spaceflight to Mir

STS-89 was a Space Shuttle mission to the Mir space station flown by Space Shuttle Endeavour, and launched from Kennedy Space Center, Florida on 22 January 1998.

<span class="mw-page-title-main">STS-88</span> First Space Shuttle mission to the International Space Station

STS-88 was the first Space Shuttle mission to the International Space Station (ISS). It was flown by Space Shuttle Endeavour, and took the first American module, the Unity node, to the station.

<span class="mw-page-title-main">STS-96</span> 1999 American crewed spaceflight to the ISS

STS-96 was a Space Shuttle mission to the International Space Station (ISS) flown by Space Shuttle Discovery, and the first shuttle flight to dock at the International Space Station. The shuttle carried the Spacehab module in the payload, filled with cargo for station outfitting. STS-96 launched from Kennedy Space Center, Florida, on 27 May 1999 at 06:49:42 AM EDT and returned to Kennedy on 6 June 1999, 2:02:43 AM EDT.

<span class="mw-page-title-main">STS-115</span> 2006 American crewed spaceflight to the ISS

STS-115 was a Space Shuttle mission to the International Space Station (ISS) flown by Space ShuttleAtlantis. It was the first assembly mission to the ISS after the Columbia disaster, following the two successful Return to Flight missions, STS-114 and STS-121. STS-115 launched from LC-39B at the Kennedy Space Center on September 9, 2006, at 11:14:55 EDT.

<span class="mw-page-title-main">Expedition 2</span> 2nd expedition to the International Space Station

Expedition 2 was the second long-duration spaceflight aboard the International Space Station, immediately following Expedition 1. Its three-person crew stayed aboard the station from March to August 2001. In addition to station maintenance, the crew assisted in several station assembly missions, welcomed the first space tourist Dennis Tito, and conducted some scientific experiments.

Shuttle–<i>Mir</i> program 1993–1998 collaborative Russia–US space program

The Shuttle–Mir program was a collaborative 11-mission space program between Russia and the United States that involved American Space Shuttles visiting the Russian space station Mir, Russian cosmonauts flying on the Shuttle, and an American astronaut flying aboard a Soyuz spacecraft to engage in long-duration expeditions aboard Mir.

<span class="mw-page-title-main">STS-119</span> 2009 American crewed spaceflight to the ISS

STS-119 was a Space Shuttle mission to the International Space Station (ISS) which was flown by space shuttle Discovery during March 2009. It delivered and assembled the fourth starboard Integrated Truss Segment (S6), and the fourth set of solar arrays and batteries to the station. The launch took place on March 15, 2009, at 19:43 EDT. Discovery successfully landed on March 28, 2009, at 15:13 pm EDT.

<span class="mw-page-title-main">STS-127</span> 2009 American crewed spaceflight to the ISS

STS-127 was a NASA Space Shuttle mission to the International Space Station (ISS). It was the twenty-third flight of Space ShuttleEndeavour. The primary purpose of the STS-127 mission was to deliver and install the final two components of the Japanese Experiment Module: the Exposed Facility, and the Exposed Section of the Experiment Logistics Module (ELM-ES). When Endeavour docked with the ISS on this mission in July 2009, it set a record for the most humans in space at the same time in the same vehicle, the first time thirteen people have been at the station at the same time. Together they represented all ISS program partners and tied the general record of thirteen people in space with the first such occurrence of 1995.

<span class="mw-page-title-main">STS-133</span> 2011 American crewed spaceflight to the ISS and final flight of Space Shuttle Discovery

STS-133 was the 133rd mission in NASA's Space Shuttle program; during the mission, Space Shuttle Discovery docked with the International Space Station. It was Discovery's 39th and final mission. The mission launched on February 24, 2011, and landed on March 9, 2011. The crew consisted of six American astronauts, all of whom had been on prior spaceflights, headed by Commander Steven Lindsey. The crew joined the long-duration six person crew of Expedition 26, who were already aboard the space station. About a month before lift-off, one of the original crew members, Tim Kopra, was injured in a bicycle accident. He was replaced by Stephen Bowen.

<span class="mw-page-title-main">STS-128</span> 2009 American crewed spaceflight to the ISS

STS-128 was a NASA Space Shuttle mission to the International Space Station (ISS) that launched on August 28, 2009. Space ShuttleDiscovery carried the Multi-Purpose Logistics Module Leonardo as its primary payload. Leonardo contained a collection of experiments for studying the physics and chemistry of microgravity. Three spacewalks were carried out during the mission, which removed and replaced a materials processing experiment outside ESA's Columbus module, and returned an empty ammonia tank assembly.

<span class="mw-page-title-main">STS-129</span> 2009 American crewed spaceflight to the ISS

STS-129 was a NASA Space Shuttle mission to the International Space Station (ISS). Atlantis was launched on November 16, 2009, at 14:28 EST, and landed at 09:44 EST on November 27, 2009, on runway 33 at the Kennedy Space Center's Shuttle Landing Facility. It was also the last Shuttle mission of the 2000s.

<span class="mw-page-title-main">STS-131</span> 2010 American crewed spaceflight to the ISS

STS-131 was a NASA Space Shuttle mission to the International Space Station (ISS). Space ShuttleDiscovery launched on April 5, 2010, at 6:21 am from LC-39A, and landed at 9:08 am on April 20, 2010, on runway 33 at the Kennedy Space Center's Shuttle Landing Facility. The mission marked the longest flight for Space Shuttle Discovery.

<span class="mw-page-title-main">STS-132</span> 2010 American crewed spaceflight to the ISS

STS-132 was a NASA Space Shuttle mission, during which Space Shuttle Atlantis docked with the International Space Station on May 16, 2010. STS-132 was launched from the Kennedy Space Center on May 14, 2010. The primary payload was the Russian Rassvet Mini-Research Module, along with an Integrated Cargo Carrier-Vertical Light Deployable (ICC-VLD). Atlantis landed at the Kennedy Space Center on May 26, 2010.

<span class="mw-page-title-main">STS-134</span> 2011 American crewed spaceflight to the ISS and final flight of Space Shuttle Endeavour

STS-134 was the penultimate mission of NASA's Space Shuttle program and the 25th and last spaceflight of Space ShuttleEndeavour. This flight delivered the Alpha Magnetic Spectrometer and an ExPRESS Logistics Carrier to the International Space Station. Mark Kelly served as the mission commander. STS-134 was expected to be the final Space Shuttle mission if STS-135 did not receive funding from Congress. However, in February 2011, NASA stated that STS-135 would fly "regardless" of the funding situation. STS-135, flown by Atlantis, took advantage of the processing for STS-335, the Launch on Need mission that would have been necessary if the STS-134 crew became stranded in orbit.

<span class="mw-page-title-main">STS-135</span> 2011 American crewed spaceflight to the ISS and final flight of the Space Shuttle program

STS-135 was the 135th and final mission of the American Space Shuttle program. It used the orbiter Atlantis and hardware originally processed for the STS-335 contingency mission, which was not flown. STS-135 launched on July 8, 2011, and landed on July 21, 2011, following a one-day mission extension. The four-person crew was the smallest of any shuttle mission since STS-6 in April 1983. The mission's primary cargo was the Multi-Purpose Logistics Module (MPLM) Raffaello and a Lightweight Multi-Purpose Carrier (LMC), which were delivered to the International Space Station (ISS). The flight of Raffaello marked the only time that Atlantis carried an MPLM.

References

  1. Suriano, Robyn (3 June 1998). "Final Flight to Mir Begins". Florida Today. p. 1. Retrieved 7 June 2022.