STS-41

Last updated

STS-41
Ulysses in Discovery's payload bay.jpg
Ulysses and its Inertial Upper Stage (IUS) in the payload bay of Discovery
Names Space Transportation System-36
Mission type Ulysses spacecraft deployment
Operator NASA
COSPAR ID 1990-090A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 20841
Mission duration4 days, 2 hours, 10 minutes, 4 seconds (achieved)
Distance travelled2,747,866 km (1,707,445 mi)
Orbits completed66
Spacecraft properties
Spacecraft Space Shuttle Discovery
Launch mass117,749 kg (259,592 lb)
Landing mass89,298 kg (196,868 lb)
Payload mass15,362 kg (33,867 lb)
Crew
Crew size5
Members
Start of mission
Launch dateOctober 6, 1990, 11:47:15  UTC
Rocket Space Shuttle Discovery
Launch site Kennedy Space Center, LC-39B
Contractor Rockwell International
End of mission
Landing dateOctober 10, 1990, 13:57:19 UTC
Landing site Edwards Air Force Base,
Runway 22
Orbital parameters
Reference system Geocentric orbit
Regime Low Earth orbit
Perigee altitude 300 km (190 mi)
Apogee altitude 307 km (191 mi)
Inclination 28.45°
Period 90.60 minutes
Instruments
  • Air Force Maui Optical Site (AMOS)
  • Chromosome and Plant Cell Division Experiment (CHROMEX)
  • INTELSAT Solar Array Coupon (ISAC)
  • Investigations into Polymer Membrane Processing (IPMP)
  • Physiological Systems Experiment (PSE)
  • Radiation Monitoring Experiment (RME III)
  • Shuttle Solar Backscatter Ultraviolet (SSBUV)
  • Solid Surface Combustion Experiment (SSCE)
  • Shuttle Student Involvement Program (SSIP)
  • Voice Command System (VCS)
Sts-41-patch.png
STS-41 mission patch
STS-41 crew.jpg
Bruce E. Melnick, Robert D. Cabana, Thomas Akers, Richard N. Richards, William Shepherd are pictured in front of the T-38 jet trainer
  STS-31 (35)
STS-38 (37) 
 

STS-41 was the 36th Space Shuttle mission and the eleventh mission of the Space Shuttle Discovery. The four-day mission had a primary objective of launching the Ulysses probe as part of the "International Solar Polar Mission" (ISPM).

Contents

Crew

Position Astronaut
Commander Richard N. Richards
Second spaceflight
Pilot Robert D. Cabana
First spaceflight
Mission Specialist 1 Bruce E. Melnick
First spaceflight
Mission Specialist 2 William Shepherd
Second spaceflight
Mission Specialist 3 Thomas Akers
First spaceflight

Crew seating arrangements

Seat [1] LaunchLanding Space Shuttle seating plan.svg
Seats 1–4 are on the Flight Deck. Seats 5–7 are on the Middeck.
S1RichardsRichards
S2CabanaCabana
S3MelnickAkers
S4ShepherdShepherd
S5AkersMelnick

Mission highlights

STS-41 launches from Kennedy Space Center, on October 6, 1990. STS-41 launch.jpg
STS-41 launches from Kennedy Space Center, on October 6, 1990.
Ulysses after deployment STS-41 Ulysses deployment.jpg
Ulysses after deployment

Discovery lifted off on October 6 1990 at 7:47:16 a.m. EDT. Liftoff occurred 12 minutes after a two-and-a-half-hour launch window opened that day at 7:35 a.m. EDT. STS-41 featured the heaviest payload to date; Discovery weighed 117,749 kg (259,592 lb). [2]

The primary payload was the European Space Agency (ESA)-built Ulysses spacecraft to explore the polar regions of Sun. Attached to Ulysses were two upper stages, the Inertial Upper Stage (IUS) and a mission-specific Payload Assist Module-S (PAM-S), combined for first time to send Ulysses toward an out-of-ecliptic trajectory. Other payloads and experiments included the Shuttle Solar Backscatter Ultraviolet (SSBUV) experiment, INTELSAT Solar Array Coupon (ISAC), Chromosome and Plant Cell Division Experiment (CHROMEX), Voice Command System (VCS), Solid Surface Combustion Experiment (SSCE), Investigations into Polymer Membrane Processing (IPMP), Physiological Systems Experiment (PSE), Radiation Monitoring Experiment III (RME III), Shuttle Student Involvement Program (SSIP) and Air Force Maui Optical Site (AMOS).

Six hours after Discovery's launch, Ulysses was deployed from the payload bay. Ulysses, a joint project between the European Space Agency and NASA, was the first spacecraft to study the Sun's polar regions. Its voyage to the Sun began with a sixteen month trip to Jupiter where the planet's gravitational energy was used to fling Ulysses southward out of the orbital plane of the planets and on toward a solar south pole passage in 1994. The spacecraft crossed back over the orbital plane and made a solar north pole passage in 1995. By the time Discovery touched down at Edwards Air Force Base, California, Ulysses had already traversed 1,600,000 km (990,000 mi) on its five-year mission.

With Ulysses on its way, the STS-41 crew began an ambitious schedule of science experiments. Flowering plant samples were grown in the CHROMEX-2 module in a Kennedy Space Center and Stony Brook University experiment. An earlier version of the experiment flown on STS-29 revealed chromosome damage in root tip cells but no damage to control plants on Earth. By studying plant samples carried on Discovery, researchers hoped to determine how the genetic material in the root cells respond to microgravity. The information gained was of importance to future space travelers on long-term expeditions, researchers on the planned Space Station Freedom, and may contribute to advances in intensive farming practices on Earth.

Understanding fire behavior in microgravity was part of the continuing research to improve Space Shuttle safety. In a specially designed chamber, called the Solid Surface Combustion Experiment (SSCE), a strip of paper was burned and filmed to gain an understanding of the development of flame and its movement in the absence of convection currents. This experiment was sponsored by the Lewis Research Center (LeRC) and Mississippi State University.

Atmospheric ozone depletion is an environmental problem of worldwide concern. At the time, NASA's Nimbus 7 satellite and National Oceanic and Atmospheric Administration's (NOAA) Television Infrared Observation Satellite (TIROS) satellites provided daily data to permit researchers to detect ozone trends. The Shuttle Solar Backscatter Ultraviolet (SSBUV) instrument, from the Goddard Space Flight Center, carried an ozone detector instrument identical to those on the satellites. By comparing Discovery's measurements with coordinated satellite observations, scientists were able to calibrate their satellite instruments to insure the most accurate readings possible.

In 1990, a commercial expendable launch vehicle stranded an INTELSAT VI communications satellite in low Earth orbit. Before STS-41, NASA was evaluating a possible Shuttle rescue mission in 1992. In preparation for this rescue, solar arrays, similar to those on the satellite, were exposed to the conditions of low orbit to determine if they were in any way altered by the atomic oxygen present. When the returned arrays were closely examined, it was found that the arrays were not significantly damaged. Based on this finding, NASA went ahead and carried out STS-49 in 1992.

Until STS-41, previous research had shown that during the process of adapting to microgravity, animals and humans experienced loss of bone mass, cardiac deconditioning, and after prolonged periods (over 30 days), developed symptoms similar to that of terrestrial disuse osteoporosis. The goal of the STS-41 Physiological Systems Experiment (PSE), sponsored by the Ames Research Center and Pennsylvania State University's Center for Cell Research, was to determine if pharmacological treatments would be effective in reducing or eliminating some of these disorders. Proteins, developed by Genentech of San Francisco, California, were administered to eight rats during the flight while another eight rats accompanying them on the flight did not receive the treatment.

A view of two Space Shuttles on adjacent KSC Launch Complex 39 pads. Discovery (STS-41) is on LC-39B in the background, Columbia (STS-35) is on LC-39A in the foreground. S90-48650.jpg
A view of two Space Shuttles on adjacent KSC Launch Complex 39 pads. Discovery (STS-41) is on LC-39B in the background, Columbia (STS-35) is on LC-39A in the foreground.

The Investigations into Polymer Membrane Processing (IPMP) experiment was conducted to determine the role convection currents play in membrane formation. Membranes are used in commercial applications for purification of medicines, kidney dialysis, and water desalination. This experiment was sponsored in part by the Battelle Advanced Materials Center for the Commercial Development of Space in Columbus, Ohio.

During open periods in the STS-41 crew schedule, the astronauts video taped a number of demonstrations as part of an effort to create an educational video tape for middle school level students. The tape was later distributed nationwide through NASA's Teacher Resource Center network.

The astronauts evaluated the suitability of graphical user interfaces. Previous shuttle crews used Grid Systems laptop computers with command-line interfaces. The evaluation used mostly commercially available hardware and software, including a Macintosh Portable laptop. The astronauts found the Portable's trackball did not work well in weightlessness. The evaluation was continued on STS-43, this time using a Macintosh Portable with a modified trackball. [3]

Additional crew activities included experimenting with a voice command system (VCS) to control onboard television cameras and monitoring ionizing radiation exposure to the crew within the orbiter cabin.

On October 10, 1990, at 6:57:19 a.m. PDT, Discovery landed at Edwards Air Force Base, California, on runway 22. Rollout distance was 2,523 m (8,278 ft) and the rollout time was 49 seconds (including a braking test). Discovery was returned to Kennedy Space Center on October 16, 1990.

Wake-up calls

NASA began a tradition of playing music to astronauts during the Project Gemini, which was first used to wake up a flight crew during Apollo 15. 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. [4]

Flight DaySongArtist/ComposerPlayed for
Day 2
"Rise and Shine, Discovery!"a group of Boeing employees Ulysses
Day 3
"Semper Paratus" The Coast Guard Band Bruce Melnick
Day 4
Fanfare for the Common Man Aaron Copland
Day 5
"The Highwayman"The Highwaymen

See also

Related Research Articles

<span class="mw-page-title-main">STS-31</span> 1990 American crewed spaceflight to deploy the Hubble Space Telescope

STS-31 was the 35th mission of NASA's Space Shuttle program. The primary purpose of this mission was the deployment of the Hubble Space Telescope (HST) into low Earth orbit. The mission used the Space Shuttle Discovery, which lifted off from Launch Complex 39B on April 24, 1990, from Kennedy Space Center, Florida.

<span class="mw-page-title-main">STS-50</span> 1992 American crewed spaceflight

STS-50 was a NASA Space Shuttle mission, the 12th mission of the Columbia orbiter. Columbia landed at Kennedy Space Center for the first time ever due to bad weather at Edwards Air Force Base caused by the remnants of Hurricane Darby.

<span class="mw-page-title-main">STS-41-C</span> 1984 American crewed spaceflight to the Solar Maximum Mission satellite

STS-41-C was NASA's eleventh Space Shuttle mission, and the fifth mission of Space Shuttle Challenger. The launch, which took place on April 6, 1984, marked the first direct ascent trajectory for a Space Shuttle mission. During the mission, Challenger's crew captured and repaired the malfunctioning Solar Maximum Mission satellite, and deployed the Long Duration Exposure Facility (LDEF) experimental apparatus. STS-41-C was extended one day due to problems capturing the Solar Max satellite, and the landing on April 13, 1984, took place at Edwards Air Force Base, instead of at Kennedy Space Center as had been planned. The flight was originally numbered STS-13.

<span class="mw-page-title-main">STS-41-D</span> 1984 American crewed spaceflight and maiden flight of Space Shuttle Discovery

STS-41-D was the 12th flight of NASA's Space Shuttle program, and the first mission of Space Shuttle Discovery. It was launched from Kennedy Space Center, Florida, on August 30, 1984, and landed at Edwards Air Force Base, California, on September 5, 1984. Three commercial communications satellites were deployed into orbit during the six-day mission, and a number of scientific experiments were conducted, including a prototype extendable solar array that would eventually form the basis of the main solar arrays on the International Space Station (ISS).

<span class="mw-page-title-main">STS-26</span> 1988 American crewed spaceflight to deploy TDRS-3, and "Return to Flight" after STS-51-L

STS-26 was the 26th NASA Space Shuttle mission and the seventh flight of the orbiter Discovery. The mission launched from Kennedy Space Center, Florida, on September 29, 1988, and landed four days later on October 3, 1988. STS-26 was declared the "Return to Flight" mission, being the first mission after the Space Shuttle Challenger disaster of January 28, 1986. It was the first mission since STS-9 to use the original Space Transportation System (STS) numbering system, the first to have all its crew members wear pressure suits for launch and landing since STS-4, and the first mission with bailout capacity since STS-4. STS-26 was also the first U.S. space mission with an all-veteran crew since Apollo 11, with all of its crew members having flown at least one prior mission.

<span class="mw-page-title-main">STS-29</span> 1989 American crewed spaceflight to deploy TDRS-4

STS-29 was the 28th NASA Space Shuttle mission, during which Space Shuttle Discovery inserted a Tracking and Data Relay Satellite (TDRS) into Earth orbit. It was the third shuttle mission following the Challenger disaster in 1986, and launched from Kennedy Space Center, Florida, on March 13, 1989. STS-29R was the eighth flight of Discovery and the 28th Space Shuttle mission overall; its planned predecessor, STS-28, was delayed until August 1989.

<span class="mw-page-title-main">STS-43</span> 1991 American crewed spaceflight to deploy TDRS-5

STS-43, the ninth mission for Space Shuttle Atlantis, was a nine-day mission whose primary goal was launching the TDRS-E satellite (TDRS-5). The flight also tested an advanced heatpipe radiator for potential use on the then-future space station and conducted a variety of medical and materials science investigations.

<span class="mw-page-title-main">STS-48</span> 1991 American crewed spaceflight to deploy the Upper Atmospheric Research Satellite

STS-48 was a Space Shuttle mission that launched on September 12, 1991, from Kennedy Space Center, Florida. The orbiter was Space ShuttleDiscovery. The primary payload was the Upper Atmosphere Research Satellite (UARS). The mission landed on September 18 at 12:38 a.m. EDT at Edwards Air Force Base on runway 22. The mission was completed in 81 revolutions of the Earth and traveled 3,530,369 km (2,193,670 mi). The 5 astronauts carried out a number of experiments and deployed several satellites. The total launch mass was 108,890 kg (240,060 lb) and the landing mass was 87,440 kg (192,770 lb).

<span class="mw-page-title-main">STS-42</span> 1992 American crewed spaceflight

STS-42 was a NASA Space Shuttle Discovery mission with the Spacelab module. Liftoff was originally scheduled for 8:45 EST on January 22, 1992, but the launch was delayed due to weather constraints. Discovery successfully lifted off an hour later at 9:52:33 EST. The main goal of the mission was to study the effects of microgravity on a variety of organisms. The shuttle landed at 8:07:17 PST on January 30, 1992, on Runway 22, Edwards Air Force Base, California. STS-42 was the first of two flights in 1992 of Discovery, the second of which occurred during STS-53, which launched on December 2, 1992. The mission was also the last mission of the Space Shuttle Discovery to have a seven-member crew until STS-82, which was launched on February 11, 1997.

<span class="mw-page-title-main">Shannon Lucid</span> American biochemist and astronaut (born 1943)

Shannon Wells Lucid is an American biochemist and retired NASA astronaut. She has flown in space five times, including a prolonged mission aboard the Russian space station Mir in 1996, and is the only American woman to have stayed on Mir. From 1996 to 2007, Lucid held the record for the longest duration spent in space by an American and by a woman. She was awarded the Congressional Space Medal of Honor in December 1996, making her the tenth person and the first woman to be accorded the honor.

<span class="mw-page-title-main">STS-51</span> 1993 American crewed spaceflight

STS-51 was a NASA Space Shuttle Discovery mission that launched the Advanced Communications Technology Satellite (ACTS) in September 1993. The flight also featured the deployment and retrieval of the SPAS-ORFEUS satellite and its IMAX camera, which captured spectacular footage of Discovery in space. A spacewalk was also performed during the mission to evaluate tools and techniques for the STS-61 Hubble Space Telescope (HST) servicing mission later that year. STS-51 was the first shuttle mission to fly a Global Positioning System (GPS) receiver, a Trimble TANS Quadrex. It was mounted in an overhead window where limited field of view (FoV) and signal attenuation from the glass severely impacted receiver performance. Full triple-redundant 3-string GPS would not happen until 14 years later with STS-118 in 2007.

<span class="mw-page-title-main">Norman Thagard</span> American astronaut, scientist, and Marine Corps officer

Norman Earl Thagard, is an American scientist and former U.S. Marine Corps officer and naval aviator and NASA astronaut. He is the first American to ride to space on board a Russian vehicle, and can be considered the first American cosmonaut. He did this on March 14, 1995, in the Soyuz TM-21 spacecraft for the Russian Mir-18 mission.

<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 February 3, 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-72</span> 1996 American crewed spaceflight to retrieve the Space Flyer Unit

STS-72 was a Space Shuttle Endeavour mission to capture and return to Earth a Japanese microgravity research spacecraft known as Space Flyer Unit (SFU). The mission launched from Kennedy Space Center, Florida on 11 January 1996.

<span class="mw-page-title-main">STS-78</span> 1996 American crewed spaceflight to support the Life and Microgravity Spacelab

STS-78 was the fifth dedicated Life and Microgravity Spacelab mission for the Space Shuttle program, flown partly in preparation for the International Space Station project. The mission used the Space Shuttle Columbia, which lifted off successfully from Kennedy Space Center's Launch Pad 39B on June 20, 1996. This marked the 78th flight of the Space Shuttle and 20th mission for Columbia.

<span class="mw-page-title-main">STS-95</span> 1998 American crewed spaceflight

STS-95 was a Space Shuttle mission launched from Kennedy Space Center, Florida on 29 October 1998, using the orbiter Discovery. It was the 25th flight of Discovery and the 92nd mission flown since the start of the Space Shuttle program in April 1981. It was a highly publicized mission due to former Project Mercury astronaut and United States Senator John H. Glenn Jr.'s return to space for his second space flight. At age 77, Glenn became the oldest person to go into space, a record that remained unbroken for 23 years until 82-year-old Wally Funk flew on a suborbital flight on Blue Origin NS-16, launching on 20 July 2021, which in turn was broken by William Shatner at age 90 on 13 October 2021. Glenn, however, remains the oldest person to reach Earth orbit. This mission is also noted for inaugurating ATSC HDTV broadcasting in the U.S., with live coast-to-coast coverage of the launch. In another first, Pedro Duque became the first Spaniard in space.

<span class="mw-page-title-main">Robert D. Cabana</span> American astronaut

Robert Donald Cabana is the Associate Administrator of the National Aeronautics and Space Administration (NASA), a NASA astronaut, and a veteran of four Space Shuttle flights. He served as Chief of the Astronaut Office from 1994 to 1997 and as director of the John F. Kennedy Space Center from 2008 to 2021. He is also a former naval flight officer and naval aviator in the United States Marine Corps.

<span class="mw-page-title-main">Bruce E. Melnick</span> American astronaut (born 1949)

Bruce Edward Melnick is a retired American astronaut and United States Coast Guard officer. Following retirement from NASA and the Coast Guard, he entered the aerospace industry. He served as a vice president with the Boeing Co.'s Integrated Defense Systems group, in charge of Boeing's Florida operations at the John F. Kennedy Space Center (KSC). Melnick retired in 2008 and currently resides on Merritt Island, Florida.

<i>The Dream Is Alive</i> 1985 American film

The Dream is Alive is an American IMAX documentary film, released on June 1, 1985, about NASA's Space Shuttle program. The film was narrated by Walter Cronkite, and directed by Graeme Ferguson.

<span class="mw-page-title-main">NASA Astronaut Group 10</span>

NASA Astronaut Group 10 was a group of 17 astronauts that were announced on May 23, 1984 and consisted of seven pilots and ten mission specialists. Although selected in 1984, no member of the group would fly until 1988 due to the Challenger disaster and the resulting grounding of the Space Shuttle fleet.

References

  1. "STS-41". Spacefacts. Retrieved February 26, 2014.
  2. Chowdhury, Abdul (June 10, 2020). "STS-41". Life Science Data Archive. NASA. Retrieved February 6, 2022.
  3. Lewis, Peter H. (August 12, 1991). "SHUTTLE MISSION PUTS COMPUTERS TO THE TEST NASA makes Grid, Macintosh space-friendly". Baltimore Sun. Archived from the original on October 22, 2020. Retrieved May 27, 2022.
  4. Fries, Colin (June 25, 2007). "Chronology of Wakeup Calls" (PDF). NASA. Retrieved August 13, 2007.PD-icon.svg This article incorporates text from this source, which is in the public domain .