STS-31
Encyclopedia
STS-31 was the thirty-fifth mission of the American Space Shuttle program
Space Shuttle program
NASA's Space Shuttle program, officially called Space Transportation System , was the United States government's manned launch vehicle program from 1981 to 2011...

, which launched the Hubble Space Telescope
Hubble Space Telescope
The Hubble Space Telescope is a space telescope that was carried into orbit by a Space Shuttle in 1990 and remains in operation. A 2.4 meter aperture telescope in low Earth orbit, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared...

 astronomical observatory into Earth orbit
Low Earth orbit
A low Earth orbit is generally defined as an orbit within the locus extending from the Earth’s surface up to an altitude of 2,000 km...

. The mission used the Space Shuttle
Space Shuttle
The Space Shuttle was a manned orbital rocket and spacecraft system operated by NASA on 135 missions from 1981 to 2011. The system combined rocket launch, orbital spacecraft, and re-entry spaceplane with modular add-ons...

 Discovery
Space Shuttle Discovery
Space Shuttle Discovery is one of the retired orbiters of the Space Shuttle program of NASA, the space agency of the United States, and was operational from its maiden flight, STS-41-D on August 30, 1984, until its final landing during STS-133 on March 9, 2011...

, which lifted off from Launch Pad 39B on 24 April 1990 from Kennedy Space Center
Kennedy Space Center
The John F. Kennedy Space Center is the NASA installation that has been the launch site for every United States human space flight since 1968. Although such flights are currently on hiatus, KSC continues to manage and operate unmanned rocket launch facilities for America's civilian space program...

, Florida.

Discovery's crew deployed the telescope on 25 April, and spent the rest of the mission tending to various scientific experiments in the shuttle's payload bay and operating a set of IMAX
IMAX
IMAX is a motion picture film format and a set of proprietary cinema projection standards created by the Canadian company IMAX Corporation. IMAX has the capacity to record and display images of far greater size and resolution than conventional film systems...

 cameras to record the mission. Discoverys 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
Space Shuttle Columbia
Space Shuttle Columbia was the first spaceworthy Space Shuttle in NASA's orbital fleet. First launched on the STS-1 mission, the first of the Space Shuttle program, it completed 27 missions before being destroyed during re-entry on February 1, 2003 near the end of its 28th, STS-107. All seven crew...

 on 39A.

Crew

Crew Notes

Initially, this mission was to be flown in August 1986 as STS-61-J using Atlantis
Space Shuttle Atlantis
The Space Shuttle Atlantis is a retired Space Shuttle orbiter in the Space Shuttle fleet belonging to the National Aeronautics and Space Administration , the spaceflight and space exploration agency of the United States...

, but was postponed due to the Challenger disaster
Space Shuttle Challenger disaster
The Space Shuttle Challenger disaster occurred on January 28, 1986, when Space Shuttle Challenger broke apart 73 seconds into its flight, leading to the deaths of its seven crew members. The spacecraft disintegrated over the Atlantic Ocean, off the coast of central Florida at 11:38 am EST...

. John Young was originally assigned to command this mission, which would have been his seventh spaceflight, but was reassigned to an administrative position and was replaced by Loren J. Shriver.

Mission parameters

  • Mass
    Mass
    Mass can be defined as a quantitive measure of the resistance an object has to change in its velocity.In physics, mass commonly refers to any of the following three properties of matter, which have been shown experimentally to be equivalent:...

    :
    • Orbiter Liftoff: 117586 kilograms (259,232.8 lb)
    • Orbiter Landing: 85947 kilograms (189,480.7 lb)
    • Payload: 11878 kilograms (26,186.5 lb)
  • Perigee
    Perigee
    Perigee is the point at which an object makes its closest approach to the Earth.. Often the term is used in a broader sense to define the point in an orbit where the orbiting body is closest to the body it orbits. The opposite is the apogee, the farthest or highest point.The Greek prefix "peri"...

    : 585 kilometres (363.5 mi)
  • Apogee: 615 kilometres (382.1 mi)
  • Inclination
    Inclination
    Inclination in general is the angle between a reference plane and another plane or axis of direction.-Orbits:The inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit...

    : 28.5°
  • Period
    Orbital period
    The orbital period is the time taken for a given object to make one complete orbit about another object.When mentioned without further qualification in astronomy this refers to the sidereal period of an astronomical object, which is calculated with respect to the stars.There are several kinds of...

    : 96.7 min

Mission highlights

Launched 24 April 1990, 8:33:51 am EDT. Launch scheduled for 18 April, then 12 April, then 10 April, following Flight Readiness Review (FRR). First time date set at FRR was earlier than that shown on previous planning schedules. Launch 10 April scrubbed at T-4 minutes due to faulty valve in auxiliary power unit (APU) number one. APU replaced and payload batteries recharged. Countdown briefly halted at T-31 seconds when computer software failed to shut down a fuel valve line on ground support equipment. Engineers ordered valve to shut and countdown continued. Launch Weight: 112994 kilograms (249,109.1 lb).

STS-31 was the tenth launch of the Shuttle Discovery. On board were Charles Bolden, Loren Shriver
Loren Shriver
Loren James Shriver is a former NASA astronaut, aviator, and a retired US Air Force Colonel.-Career:Shriver currently holds the position of Deputy Director for Launch and Payload Processing at NASA's Kennedy Space Center...

, Bruce McCandless
Bruce McCandless II
Bruce McCandless II is a former naval aviator with the United States Navy and former NASA astronaut. During the first of his two Space Shuttle missions he made the first ever untethered free flight, using the Manned Maneuvering Unit.-Education:McCandless is the son of Bruce McCandless, a decorated...

, Steven Hawley
Steven Hawley
Steven Alan Hawley is a former NASA astronaut who flew on five spaceflights.-Personal data:Born December 12, 1951, in Ottawa, Kansas, but considers Salina, Kansas, to be his hometown. Currently married to the former Eileen M. Keegan of Redondo Beach, California, a public affairs officer at NASA...

, and Kathryn D. Sullivan
Kathryn D. Sullivan
Kathryn Dwyer Sullivan is an American geologist and a former NASA astronaut. A crew member on three Space Shuttle missions, she is the first American woman to walk in space.-Education:...

.

The primary payload was the Hubble Space Telescope
Hubble Space Telescope
The Hubble Space Telescope is a space telescope that was carried into orbit by a Space Shuttle in 1990 and remains in operation. A 2.4 meter aperture telescope in low Earth orbit, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared...

 (HST), deployed in a 380 statute mile (612 kilometres (380.3 mi)) orbit. The shuttle's orbit in this mission was its second highest orbit up to that date, in order that the HST could be released near to its operational altitude well outside of the atmosphere
Earth's atmosphere
The atmosphere of Earth is a layer of gases surrounding the planet Earth that is retained by Earth's gravity. The atmosphere protects life on Earth by absorbing ultraviolet solar radiation, warming the surface through heat retention , and reducing temperature extremes between day and night...

. Discovery orbited the earth 80 times during the mission.

The main purpose of this mission was to deploy the Hubble Space Telescope
Hubble Space Telescope
The Hubble Space Telescope is a space telescope that was carried into orbit by a Space Shuttle in 1990 and remains in operation. A 2.4 meter aperture telescope in low Earth orbit, Hubble's four main instruments observe in the near ultraviolet, visible, and near infrared...

 (HST) astronomical observatory. It was designed to operate above the Earth's turbulent and obscuring atmosphere to observe celestial objects at ultraviolet, visible and near-infrared wavelengths. This was a joint NASA-ESA effort. The rest of the mission was devoted to photography and onboard experiments. To launch HST into an orbit that guaranteed longevity, Discovery soared to 600 kilometres (372.8 mi) – the highest shuttle altitude ever at the time. The record height 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 IMAX film Destiny in Space
Destiny in Space
Destiny in Space is a 70mm American documentary film released to IMAX cinemas in 1994. The film is directed in part by Academy Award-winning sound designer Ben Burtt, and is narrated by Leonard Nimoy....

. Experiment activity included a biomedical technology study, advanced materials research; particle contamination and ionizing radiation measurements; and 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 min 58 s, the longest in shuttle history up to that time.

Secondary payloads: IMAX
IMAX
IMAX is a motion picture film format and a set of proprietary cinema projection standards created by the Canadian company IMAX Corporation. IMAX has the capacity to record and display images of far greater size and resolution than conventional film systems...

 Cargo Bay Camera (ICBC) to document operations outside crew cabin and hand-held IMAX camera for use inside crew cabin; Ascent Particle Monitor (APM) to detect particulate matter in payload bay; Protein Crystal Growth (PCG) to provide data on growing protein crystals in microgravity; Radiation
Radiation
In physics, radiation is a process in which energetic particles or energetic waves travel through a medium or space. There are two distinct types of radiation; ionizing and non-ionizing...

 Monitoring Equipment III (RME III) to measure gamma ray
Gamma ray
Gamma radiation, also known as gamma rays or hyphenated as gamma-rays and denoted as γ, is electromagnetic radiation of high frequency . Gamma rays are usually naturally produced on Earth by decay of high energy states in atomic nuclei...

 levels in crew cabin; Investigations into Polymer Membrane Processing (IPMP) to determine porosity control in microgravity environment; Shuttle Student involvement program (SSIP) experiment to study effects of near-weightlessness on electrical arcs, and Air Force Maui Optical Site (AMOS) experiment.

29 April 1990, 6:49:57 am PDT, Runway 22, Edwards Air Force Base
Edwards Air Force Base
Edwards Air Force Base is a United States Air Force base located on the border of Kern County, Los Angeles County, and San Bernardino County, California, in the Antelope Valley. It is southwest of the central business district of North Edwards, California and due east of Rosamond.It is named in...

, CA. Rollout distance: 2705 metres (8,874.7 ft). Rollout time: 61 seconds. First use of carbon brakes at landing. Orbiter returned to KSC on 7 May 1990. Landing Weight: 85782 kilograms (189,116.9 lb).

Wake-up calls

NASA began a tradition of playing music to astronauts during the Gemini program, which was first used to wake up a flight crew during Apollo 15
Apollo 15
Apollo 15 was the ninth manned mission in the American Apollo space program, the fourth to land on the Moon and the eighth successful manned mission. It was the first of what were termed "J missions", long duration stays on the Moon with a greater focus on science than had been possible on previous...

.
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.
Flight Day Song Artist/Composer
Day 2 "Space is Our World" Private Numbers
Day 3 "Shout" Otis Day and the Knights
Otis Day and the Knights
Otis Day and the Knights was originally created as a fictional band to perform in the movie National Lampoon's Animal House. They are best known for their version of "Shout" and "Shama Lama Ding Dong". Otis Day was played by DeWayne Jessie. Robert Cray was one of the members of the band in the...

Day 4 "Kokomo
Kokomo
-Places:* Kokomo, Indiana, a city located in Howard County, Indiana, United States, that is also its county seat** Indiana University Kokomo* Kokomo, Mississippi, United States* Kokomo, Hawaii, United States - on the island of Maui...

"
Beach Boys
Day 5 "Cosmos" Frank Hayes
Day 6 "Rise and Shine" Raffi
Raffi (musician)
Raffi Cavoukian, CM, OBC , better known by his stage name Raffi, is a Canadian-Armenian singer-songwriter, author, essayist and lecturer...


See also

  • Space science
    Space science
    The term space science may mean:* The study of issues specifically related to space travel and space exploration, including space medicine.* Science performed in outer space ....

  • Space shuttle
    Space Shuttle
    The Space Shuttle was a manned orbital rocket and spacecraft system operated by NASA on 135 missions from 1981 to 2011. The system combined rocket launch, orbital spacecraft, and re-entry spaceplane with modular add-ons...

  • List of space shuttle missions
  • List of human spaceflights chronologically

External links



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