STS-2

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STS-2
STS-2 Canadarm debut.jpg
Canadarm's in-flight test during STS-2
Names Space Transportation System-2
Mission type Flight test
Operator NASA
COSPAR ID 1981-111A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 12953 OOjs UI icon edit-ltr-progressive.svg
Mission durationAchieved: 2 days, 6 hours, 13 minutes, 12 seconds
Planned: 5 days
Distance travelled1,730,000 km (1,070,000 mi) [1]
Orbits completed37
Spacecraft properties
Spacecraft Space Shuttle Columbia
Launch mass104,647 kg (230,707 lb)
Landing mass92,650 kg (204,260 lb)
Payload mass8,517 kg (18,777 lb)
Crew
Crew size2
Members
Start of mission
Launch dateNovember 12, 1981, 15:10:00 (1981-11-12UTC15:10Z)  UTC (10:10 am  EST)
Launch site Kennedy, LC-39A
Contractor Rockwell International
End of mission
Landing dateNovember 14, 1981, 21:23:12 (1981-11-14UTC21:23:13Z) UTC (1:23:12 pm  PST)
Landing site Edwards, Runway 23
Orbital parameters
Reference system Geocentric orbit
Regime Low Earth orbit
Perigee altitude 222 km (138 mi)
Apogee altitude 231 km (144 mi)
Inclination 38.03°
Period 89.00 minutes
Instruments
  • Development Flight Instrumentation (DFI)
  • Shuttle Imaging Radar (SIR)
Sts-2-patch.png
STS-2 mission patch
Sts-2 crew.jpg
Engle and Truly
←  STS-1
STS-3  →

STS-2 was the second Space Shuttle mission conducted by NASA, and the second flight of the orbiter Columbia. The mission, crewed by Joe H. Engle and Richard H. Truly, launched on November 12, 1981, and landed two days later on November 14, 1981. [1] STS-2 marked the first time that a crewed, reusable orbital vehicle returned to space. [note 1] This mission tested the Shuttle Imaging Radar (SIR) as part of the OSTA-1 (Office of Space and Terrestrial Applications) payload, along with a wide range of other experiments including the Shuttle robotic arm, commonly known as Canadarm. [2] Other experiments or tests included Shuttle Multispectral Infrared Radiometer, Feature Identification and Location Experiment, Measurement of Air Pollution from Satellites, Ocean Color Experiment, Night/Day optical Survey of Lightning, Heflex Bioengineering Test, and Aerodynamic Coefficient Identification Package (ACIP). [2] One of the feats accomplished was various tests on the Orbital Maneuvring System (OMS) including starting and restarting the engines while in orbit and various adjustments to its orbit. [3] The OMS tests also helped adjust the Shuttle's orbit for use of the radar. [3] During the mission, President Reagan called the crew of STS-2 from Mission Control Center in Houston. [4]

Contents

In the early planning stages of the Space Shuttle program, STS-2 was intended to be a reboost mission for the aging Skylab space station. [note 2] However, such a mission was impeded by delays with the Shuttle's development and the deteriorating orbit of Skylab. Skylab ultimately de-orbited on July 11, 1979, two years before the launch of STS-2. [5]

Crew

Position Astronaut [6]
Commander Joe H. Engle
First NASA spaceflight
Pilot Richard H. Truly
First spaceflight

Engle had been the original selection as Lunar Module Pilot for Apollo 17, but was bumped in favor of geologist Harrison Schmitt when it became clear that the mission would be the last lunar landing. As a consequence, both Engle and Truly were rookies during STS-2 (Engle had flown the X-15 above 80 km (50 mi) and so had earned USAF astronaut wings, but was still considered a NASA rookie), constituting the first all-rookie crew since Skylab 4, and the first and only all-rookie crew on the space shuttle. [7] Engle was the last NASA rookie to command his first flight until Raja Chari in 2021 with SpaceX Crew-3. Engle and Truly had also served as one of the two Shuttle crews during the Approach and Landing Tests (ALT) program in 1977. [8]

Following STS-2, NASA required all shuttle commanders to have previous spaceflight experience. [7]

Backup crew

Position Astronaut
Commander Ken Mattingly
Pilot Henry Hartsfield
This crew would later fly on STS-4.

Support crew

Crew seat assignments

Seat [10] LaunchLanding Space Shuttle seating plan.svg
Seats 1–4 are on the flight deck.
Seats 5–7 are on the mid-deck.
1Engle
2Truly
3Unused
4Unused
5Unused
6Unused
7Unused

Mission summary

President Reagan talks to the crew of STS-2, in November 1981. President Reagan at Mission Control, Houston - GPN-2000-001655.jpg
President Reagan talks to the crew of STS-2, in November 1981.
Aerial view of Columbia's launch from Pad 39A at the Kennedy Space Center in Florida. Aerial View of Columbia Launch - GPN-2000-001358.jpg
Aerial view of Columbia's launch from Pad 39A at the Kennedy Space Center in Florida.
STS-2 on final approach, coming in for its landing after re-entry, on November 14, 1981. Columbia On Final Approach - GPN-2000-001346.jpg
STS-2 on final approach, coming in for its landing after re-entry, on November 14, 1981.

The second Space Shuttle mission launched from Kennedy Space Center on November 12, 1981, with liftoff occurring at 15:10:00 UTC, 7 months after STS-1. The planned launch time of 12:30 UTC was delayed while a faulty data transmitting unit on Columbia was replaced with one from new Space Shuttle Challenger, which had been shipped overnight from the Palmdale, California factory where Challenger was still being manufactured. Richard Truly became the first astronaut to fly into space on his birthday. [11]

Originally, the launch had been set for October 9, 1981, but it was delayed by a nitrogen tetroxide spill during the loading of the forward Reaction Control System (RCS) tanks. The spill necessitated the removal, decontamination and reapplication of over 300 thermal tiles. The tiles could be reached from platforms at Launch Complex 39A, allowing the work to take place without destacking Columbia and returning it to the Orbiter Processing Facility (OPF). It was next scheduled for November 4, 1981, but was again scrubbed when high oil pressures were discovered in two of the three Auxiliary Power Units (APUs) that controlled the orbiter's hydraulic system. That issue was attributed to hydrazine seepage contaminating the lubrication system in the APUs.

AttemptPlannedResultTurnaroundReasonDecision pointWeather go (%)Notes
14 Nov 1981, 12:30:00 pmScrubbed—Technical ​(T−00:00:31)APU's 1 and 3 lube oil outlet pressure high at 100 to 112 PSIA. Flushed APU's 1 and 3 gear boxes and changed clogged filters. [12]
212 Nov 1981, 10:10:00 amSuccess7 days 21 hours 40 minutesMultiplexer/Demultiplexer (MDM) of 3 failed delaying launch by 2 hours 40 minutes while a replacement from the Challenger orbiter was flown in. An additional 10-minute delay was introduced for a confidence review of systems status.

The flight marked the first time an orbital crewed space vehicle had been re-flown with a second crew. Prior to launch, Columbia spent 103 days in the Orbiter Processing Facility. It again carried the DFI package, as well as the OSTA-l payload (named for the NASA Office of Space and Terrestrial Applications), which consisted of a number of remote-sensing instruments mounted on a Spacelab pallet in the payload bay. These instruments, including the Shuttle Imaging Radar-A (SIR-A), successfully carried out remote sensing of Earth's resources, environmental quality, and ocean and weather conditions. [13] In addition, the Canadian-built "Canadarm" Remote Manipulator System (RMS) was successfully operated in all its various operating modes for the first time.

During the mission, the Mission Control Center was visited by President Ronald Reagan. He was supposed to visit during STS-1, but was forced to cancel due to an assassination attempt on March 30, 1981.

Although the STS-2 mission had been planned for a duration of five days, with a few hours a day spent testing the Canadarm, the flight was cut short when one of the three fuel cells that produced electricity and drinking water failed. The mission was shortened to two days, and the Canadarm tests were canceled. The crew stayed awake during a scheduled sleep period and tested the arm anyway, working during the loss of signal (LOS) periods when they were not in contact with Mission Control. [14] The deorbit and reentry phase of this mission differed from STS-1, in that while the first shuttle entry was flown as a "middle of the road" test of the automatic guidance, the success of that mission allowed for the STS-2 crew to explore the stability margins of the vehicle's performance. Twenty-nine planned Programmed Test Inputs (PTIs) were manually flown in the Control Stick Steering (CSS) mode, with Engle making use of his past experience in the X-15. These PTIs provided useful data for subsequent engineering modifications. [14] Contrary to the interviewer's assertion in a JSC Oral history conversation with Engle, he hand flew maneuvers throughout the entire entry speed range, but not for the entire duration. [15] As a consequence of STS-1 entry anomalies, the first roll maneuver was flown manually and the elevon scheduling was adjusted to offload the body flap.

Chase 1 crewed by astronauts "Hoot" Gibson and Kathy Sullivan escorted Columbia on final approach. Landing took place on Runway 23 at Edwards Air Force Base at 21:23 UTC, on November 14, 1981, after a 37-orbit flight which covered a total of 1,730,000 km (1,070,000 mi) over the course of 2 days, 6 hours, 13 minutes and 12 seconds. [1]

Despite the truncated flight, more than 90% of the mission's objectives were achieved. [14] Moreover, modifications of the water sound suppression system at the pad, to absorb the solid rocket booster overpressure wave during launch, were effective; no tiles were lost and only 12 were damaged. Columbia was flown back to the Kennedy Space Center on November 25, 1981.

STS-2 was the first Space Shuttle flight where O-ring blow-by was observed. After the damage was discovered, another O-ring was intentionally damaged to a further degree. It was then put through a flight simulation at three times the flight pressure. It survived the test, and was endorsed as flightworthy. This same problem would occur on fourteen more Shuttle flights, before contributing to the loss of orbiter Challenger in 1986.

STS-2 was the last shuttle flight to have its external fuel tank (ET) painted white. In an effort to reduce the Shuttle's overall weight, STS-3 and all subsequent missions used an unpainted tank, saving approximately 272 kg (600 lb) of launch weight. [16] This lack of paint gave the ET a distinctive orange-brown color, which eventually became emblematic of the Space Shuttle.

Decades later, in 2006, some in the spaceflight community questioned whether the white paint would have prevented the ice-soaked foam shedding issue that led to the loss of Columbia. NASA consensus was that it would not. [17] [18]

Experiments or tests

STS-2 payloads or experiments: [2]

They also tested the OMS engines. [3]

Mission insignia

The mission patch notes the names of the mission's two crew members, and includes an image of a bald eagle, the national bird of the United States, decorated with the colors of the U.S. flag.

Wake-up calls

NASA began a tradition of playing music to astronauts during the Project Gemini, and first used music to wake up a flight crew during Apollo 15. [19]

Flight DaySongArtist/Composer
Day 2"Pigs in Space" The Muppets
Day 3"Columbia, Gem of the Ocean"Flight Operations Directorate group Contraband

See also

Notes

  1. ↑ The uncrewed Gemini 2 suborbital capsule was reused in another uncrewed, suborbital test for the Manned Orbiting Laboratory (MOL) project after significant refurbishment. Also, two X-15 airframes (flown by STS-2 Commander Joe Engle) were reused on several suborbital space missions.
  2. ↑ Fred Haise and Jack Lousma were named as the prime crew for the original STS-2 mission, with Vance D. Brand and C. Gordon Fullerton as backups

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References

  1. 1 2 3 "NASA – STS-2". NASA. Retrieved May 9, 2008.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  2. 1 2 3 4 Becker, Joachim. "Spaceflight mission report: STS-2". spacefacts.de. Retrieved December 30, 2017.
  3. 1 2 3 Evans, Ben (November 12, 2016). "Flying a Used Space Shuttle: 35 Years Since the Short Mission of STS-2 (Part 1)" . Retrieved December 30, 2017.
  4. ↑ Wilson, Jim. "NASA - Remembering Ronald Reagan". NASA. Retrieved December 30, 2017.[ permanent dead link ]PD-icon.svg This article incorporates text from this source, which is in the public domain .
  5. ↑ Shayler, David (2001). Skylab. Berlin: Springer. p. 311. ISBN   1-85233-407-X.
  6. ↑ "STS-2". NASA. Retrieved August 1, 2018.PD-icon.svg This article incorporates text from this source, which is in the public domain.
  7. 1 2 Gebhardt, Chris (February 1, 2011). "Space Shuttle Columbia: A New Beginning and Vision". www.nasaspaceflight.com.
  8. ↑ "Joe H. Engle Oral History Interviews". Johnson Space Center Oral History Project. Houston: National Aeronautical and Space Administration. 2004. Archived from the original on June 19, 2024. Retrieved July 11, 2024.
  9. ↑ Mission transcript, NASA, retrieved November 13, 2012– via Internet Archive
  10. ↑ "STS-2". Spacefacts. Retrieved July 29, 2024.
  11. ↑ "40 Years Ago: Columbia Returns to Space on the STS-2 Mission". NASA. November 12, 2021. Retrieved January 24, 2024.
  12. ↑ "Space Shuttle Mission Summary" (PDF). NASA Johnson Space Center. February 11, 2015.PD-icon.svg This article incorporates text from this source, which is in the public domain.
  13. ↑ "SIR-A: 1982". NASA. Archived from the original on February 8, 1997. Retrieved June 22, 2013.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  14. 1 2 3 Engle, Joe (June 3, 2004). "Joe H. Engle Oral History". NASA Johnson Space Center Oral History Project (Interview). Interviewed by Rebecca Wright. Retrieved July 17, 2013.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  15. ↑ Jenkins, Dennis R. (2017). Space Shuttle: Developing an Icon 1972-2013. Speciality Press. ISBN   9781580072496.
  16. ↑ "NASA Takes Delivery of 100th Space Shuttle External Tank" (Press release). NASA. August 16, 1999. Archived from the original on March 11, 2007. Retrieved July 17, 2013. pp. 99–193 PD-icon.svg This article incorporates text from this source, which is in the public domain .
  17. ↑ Malik, Tariq (April 12, 2006). "Columbia's White External Fuel Tanks". Space.com. Retrieved December 30, 2017.
  18. ↑ "Space Shuttle Mission Summary" (PDF). NASA Johnson Space Center. February 11, 2015.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  19. ↑ Fries, Colin (June 25, 2007). "Chronology of Wakeup Calls" (PDF). NASA. Archived from the original (PDF) on December 20, 2023. Retrieved August 13, 2007.PD-icon.svg This article incorporates text from this source, which is in the public domain .
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