STS-27

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STS-27
Atlantis taking off on STS-27.jpg
Launch of Atlantis
Names Space Transportation System-27
STS-27R
Mission type DoD satellite deployment
Operator NASA
COSPAR ID 1988-106A OOjs UI icon edit-ltr-progressive.svg
SATCAT no. 19670
Mission duration4 days, 9 hours, 5 minutes, 37 seconds (achieved)
Distance travelled2,916,252 km (1,812,075 mi)
Orbits completed68
Spacecraft properties
Spacecraft Space Shuttle Atlantis
Landing mass86,616 kg (190,956 lb)
Payload mass14,500 kg (32,000 lb)
Crew
Crew size5
Members
Start of mission
Launch dateDecember 2, 1988, 14:30:34 UTC
Rocket Space Shuttle Atlantis
Launch site Kennedy Space Center, LC-39B
Contractor Rockwell International
End of mission
Landing dateDecember 6, 1988, 23:36:11 UTC
Landing site Edwards Air Force Base,
Runway 17
Orbital parameters
Reference system Geocentric orbit
Regime Low Earth orbit
Perigee altitude 437 km (272 mi)
Apogee altitude 447 km (278 mi)
Inclination 57.00°
Period 93.40 minutes
Sts-27-patch.png
STS-27 mission patch
Crew STS-27.jpg
Back row: William M. Shepherd, Richard M. Mullane
Front row: Guy S. Gardner, Robert L. Gibson, Jerry L. Ross
←  STS-26
STS-29 (28) →
 

STS-27 was the 27th NASA Space Shuttle mission, and the third flight of Space Shuttle Atlantis. Launching on December 2, 1988, on a four-day mission, it was the second shuttle flight after the Space Shuttle Challenger disaster of January 1986. STS-27 carried a classified payload for the U.S. Department of Defense (DoD), ultimately determined to be a Lacrosse surveillance satellite. The vessel's heat shielding was substantially damaged during lift-off, and crew members thought that they would die during reentry. [1] [2] This was a situation that was similar to the one that would prove fatal 15 years later on STS-107. Compared to the damage that Columbia sustained on STS-107, Atlantis experienced more extensive damage. However, this was over less critical areas and the missing tile was over an antenna which gave extra protection to the spacecraft structure (and not part of a wing as cited initially). The mission landed successfully, although intense heat damage needed to be repaired.

Contents

The mission is technically designated STS-27R, as the original STS-27 designator belonged to STS-51-I, the twentieth Space Shuttle mission. Official documentation for that mission contained the designator STS-27 throughout. As STS-51-L was designated STS-33, future flights with the STS-26 through STS-33 designators would require the R in their documentation to avoid conflicts in tracking data from one mission to another. [3]

Crew

Position Astronaut
Commander Robert L. Gibson
Third spaceflight
Pilot Guy S. Gardner
First spaceflight
Mission Specialist 1 Richard M. Mullane
Second spaceflight
Mission Specialist 2 Jerry L. Ross
Second spaceflight
Mission Specialist 3 William M. Shepherd
First spaceflight

Crew seating arrangements

Seat [4] LaunchLanding Space Shuttle seating plan.svg
Seats 1–4 are on the Flight Deck. Seats 5–7 are on the Middeck.
S1GibsonGibson
S2GardnerGardner
S3MullaneShepherd
S4RossRoss
S5ShepherdMullane

Mission summary

Atlantis launches on STS-27. STS-27 liftoff.jpg
Atlantis launches on STS-27.
Damaged thermal protection tiles are clearly visible at touchdown. Sts-27 Landing.jpg
Damaged thermal protection tiles are clearly visible at touchdown.

The Space Shuttle Atlantis (OV-104), at the time the youngest in NASA's shuttle fleet, made its third flight on a classified mission for the United States Department of Defense (DoD). It deployed a single satellite, USA-34. [5] NASA archival information has identified USA-34 as Lacrosse 1, a side-looking radar, all-weather surveillance satellite for the U.S. National Reconnaissance Office (NRO) and the Central Intelligence Agency (CIA). [6]

The mission was originally scheduled to launch on December 1, 1988, but the launch was postponed one day because of cloud cover and strong wind conditions at the launch site. Liftoff occurred from LC-39B at Kennedy Space Center, Florida, on December 2, 1988, at 09:30:34 a.m. EST. Atlantis touched down on December 6, 1988, on Runway 17 at Edwards Air Force Base, California, at 18:36:11 EST. The total mission elapsed time at wheels-stop was 4 days, 9 hours, 5 minutes, and 37 seconds. Atlantis was returned to the Kennedy Space Center on December 13, 1988, and moved into an OPF on December 14, 1988.

There has been speculation that an EVA was conducted during this mission. [7] Interviews with members of the crew several years after the flight confirmed there had been a problem with the satellite upon release, whereupon a rendezvous with the satellite was effected and repairs performed. [8] [9] These unspecified repairs could have necessitated a spacewalk, likely performed by Ross and Shepherd. As a classified DoD mission, details or confirmation of such an EVA remain unreleased. [7]

The day after Atlantis landed, the 1988 Armenian earthquake killed tens of thousands in the Soviet Union. At an astronaut meeting Gibson said, "I know many of you may have been very curious about our classified payload. While I can't go into its design features, I can say Armenia was its first target! And we only had the weapon set on stun!" [8]

Tile damage

A partly melted aluminum plate on Atlantis' underside. STS-27metalmelt.jpg
A partly melted aluminum plate on Atlantis' underside.

Atlantis' Thermal Protection System tiles sustained extensive damage during the flight. Ablative insulating material from the starboard solid rocket booster nose cap had hit the orbiter about 85 seconds into the flight, as seen in footage of the ascent. [1] The STS-27 crew also commented that white material was observed on the windshield at various times during ascent. [10] The crew made an inspection of the shuttle's impacted starboard side using the shuttle's Canadarm, but the limited resolution and range of the cameras made it impossible to determine the full extent of the tile damage.

The problem was compounded by the fact that the crew was prohibited from using their standard method of sending images to ground control due to the classified nature of the mission. The crew was forced to use a slow, encrypted transmission method, likely causing the images NASA engineers received to be of poor quality, causing them to think the damage was actually "just lights and shadows". They told the crew the damage did not look any more severe than on past missions. [1]

One report describes the crew as "infuriated" that Mission Control Center seemed unconcerned. [11] [12] When Gibson saw the damage he thought to himself, "We are going to die"; [2] he and others did not believe that the shuttle would survive reentry. Gibson advised the crew to relax because "No use dying all tensed-up", he said, [8] [9] but if instruments indicated that the shuttle was disintegrating, Gibson planned to "tell mission control what I thought of their analysis" in the remaining seconds before his death. [1] [8]

Mullane recalled that while filming the reentry through the upper deck's overhead windows, "I had visions of molten aluminum being smeared backwards, like rain on a windshield". Although the shuttle landed safely, "The damage was much worse than any of us had expected", he wrote. [8] Upon landing, the magnitude of the damage to the shuttle astonished NASA; over 700 damaged tiles were noted, and one tile was missing altogether. This missing tile had fortunately been located over the aluminum mounting plate for an L-band antenna (one of six, part of the Tactical air navigation system (TACAN) landing system), perhaps preventing a burn-through of the sort that would ultimately doom Columbia in 2003. [4] [1] There was almost no damage present on the orbiter's left side. STS-27 Atlantis was the most damaged launch-entry vehicle to return to Earth successfully. [13] Gibson believed that had the shuttle been destroyed, Congress would have ended the shuttle program given that only one successful mission had occurred between his flight and the loss of Challenger. [8]

A review team investigated the cause, beginning with a detailed inspection of the Atlantis TPS damage, and a review of related inspection reports to establish an in-depth anomaly definition. An exhaustive data review followed to develop a fault tree and several failure scenarios. This and other information gained during the review formed the basis for the team's findings and recommendations. [10]

Wake-up calls

NASA began a tradition of playing music to astronauts during Project Gemini, and first used music to awaken a flight crew during Apollo 15. Each track is specially chosen, often by the astronauts' families, and usually has a special meaning to an individual member of the crew, or is applicable to their daily activities. [14]

Flight DaySongArtist/Composer
Day 2Army fight song
Day 3"Rawhide" parody Dimitri Tiomkin
Day 4"Do You Want to Know a Secret" parodyMike Cahill

See also

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References

  1. 1 2 3 4 5 Harwood, William (March 27, 2009). "Legendary commander tells story of shuttle's close call". Spaceflight Now. Retrieved April 1, 2018.
  2. 1 2 "Tell Me A Story: Astronaut Hoot Gibson's and Atlantis' Close Call". Kennedy Space Center Visitor Complex. April 25, 2015.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  3. ↑ Jenkins, Dennis R. (2016). "Chapter 18 - Destiny Fulfilled - The Intended Purpose". Space Shuttle: Developing an Icon - 1972-2013. Vol. III: The Flight Campaign (1 ed.). Forest Lake, Minnesota: Specialty Press. p. 132. ISBN   978-1580072496.
  4. 1 2 Becker, Joachim. "Spaceflight mission report: STS-27". SPACEFACTS. Archived from the original on September 28, 2020. Retrieved February 26, 2014.
  5. ↑ "NASA - NSSDCA - Spacecraft - Details". nssdc.gsfc.nasa.gov. NASA.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  6. ↑ "Lacrosse 1". Space Science Data Coordinated Archive. NASA. Archived from the original on August 15, 2020. Retrieved August 12, 2010.PD-icon.svg This article incorporates text from this source, which is in the public domain .
  7. 1 2 Cassutt, Michael (August 2009). "Secret Space Shuttles". Air & Space magazine. Washington, D.C.: Smithsonian Institution. Archived from the original on January 6, 2021.
  8. 1 2 3 4 5 6 Evans, Ben (January 30, 2012). "Into the Black: NASA's Secret Shuttle Missions – Part Two". AmericaSpace. Archived from the original on January 6, 2021.
  9. 1 2 Evans, Ben (December 9, 2018). "'Dying All Tensed-Up': 30 Years Since the Troubled Secret Mission of STS-27". AmericaSpace. Archived from the original on January 6, 2021.
  10. 1 2 STS-27R OV-104 Orbiter TPS Damage Review Team (February 1989). "Summary Report - Volume I" (PDF). NASA. Retrieved July 3, 2011.{{cite web}}: CS1 maint: numeric names: authors list (link)PD-icon.svg This article incorporates text from this source, which is in the public domain .
  11. ↑ Wade, Mark. "STS-27". Astronautix. Archived from the original on January 28, 2020. Retrieved January 6, 2021.
  12. ↑ Mullane, Mike (2006). Riding Rockets: The Outrageous Tales of a Space Shuttle Astronaut. New York, New York: Charles Scribner's Sons. p. 290. ISBN   978-0743296762.
  13. ↑ Gebhardt, Chris (July 2, 2011). "OV-104/ATLANTIS: An International Vehicle for a Changing World". NASASpaceFlight.com. Archived from the original on December 1, 2020.
  14. ↑ Fries, Colin (March 13, 2015). "Chronology of Wakeup Calls" (PDF). History Division. NASA. Archived (PDF) from the original on January 5, 2021. Retrieved January 5, 2021.PD-icon.svg This article incorporates text from this source, which is in the public domain .
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