Columbia space
shuttle
Columbia lands at the end of STS-1, the first shuttle mission.
Construction began on Columbia in 1975
primarily in Palmdale, California. Columbia was named after the
Boston-based sloop Columbia captained by American Robert Gray, which
explored the Pacific Northwest and became the first American vessel to
circumnavigate the world; the name also honoured Columbia, the Command
Module of Apollo 11. After construction, the orbiter arrived at John F.
Kennedy Space Centre on March 25, 1979 to prepare for its first launch.
On March 19, 1981 during preparations for a ground test, five workers
were asphyxiated during a nitrogen purge, resulting in two deaths.
The first flight of Columbia (STS-1) was commanded by John Young (a
space veteran from the Gemini and Apollo eras) and piloted by Robert
Crippen, a rookie who had never been in space before, but who served as
a support crew member for the Skylab missions and Apollo-Soyuz. It
launched April 12, 1981 and returned April 14, 1981 after orbiting the
earth 36 times.
In 1983, Columbia undertook its first operational mission (STS-9) with 6
astronauts, including the first non-American astronaut on a space
shuttle, Ulf Merbold. On January 12, 1986 Columbia took off with the
first Hispanic American astronaut, Dr. Franklin R. Chang-Diaz, as well
as the first sitting member of the House of Representatives in space,
Bill Nelson. Another first was announced on March 5, 1998 when NASA
named U.S. Air Force Lt. Col. Eileen Collins as commander of a future
Columbia mission — making Collins the first female commander of a space
shuttle mission.
Columbia, unlike her operational sister
ships, was built with the technologies that were available at the time
of her construction in Palmdale in the mid-1970's. One major difference
between Columbia and later shuttles was the use of heavier-weight spars
in the orbiter's wings and fuselage. Thus, despite improvements over the
course of her lifetime, Columbia would never weigh as little unloaded as
the orbiters in the current fleet (Challenger, despite improvements
during her conversion from the Structural Test Article into an
operational orbiter, was also heavy, although it was 10,000 lb. lighter)
Externally, Columbia was the only orbiter in the fleet that originally
had an all-tile thermal protection system (TPS). The all-tile TPS would
later be modified to incorporate felt insulation blankets on the
fuselage and upper wing surfaces — work that was performed during
Columbia's first retrofitting and the post-Challenger stand-down. Also
unique to Columbia were the black "chines" on the shuttle's upper wing
surfaces. These black areas were part of Columbia's wing design to
distinguish it from Enterprise, and also because the first shuttle's
designers did not know how re-entry heating would affect the craft's
upper wing surfaces.
Until its last refit, Columbia was the only operational orbiter with
wing markings consisting of an American flag on the left wing and the
letters "USA" on the right. From its last refit to its destruction,
Columbia bore markings identical to those of its sister orbiters — the
NASA "meatball" logo on the left wing and the American flag and
"Columbia" designation on the right.
Another unique external feature, termed the "SILTS" pod, was located on
the top of Columbia's tailfin, and was installed after STS-9 to acquire
infrared and other thermal data. Though the pod's equipment was removed
after initial tests, NASA decided to leave it in place, as the agency
had plans to use it for future experiments. The tailfin was later
modified to incorporate the drag chute first used on Endeavour in 1992.
Internally, Columbia was originally fitted with Lockheed-Martin-built
ejection seats identical to those found on the SR-71 Blackbird. These
seats were active on the initial series of orbital test flights, but
were deactivated after STS-4 and were removed entirely after STS-9.
Columbia was also the only orbiter not delivered with heads-up displays
for the pilot and co-pilot, although these were incorporated after
STS-9. Like its sister ships, Columbia was eventually retrofitted (at
its last refit) with the new MEDS "glass cockpit" display and
lightweight seats. Unlike the other orbiters, Columbia retained an
internal airlock, but was fitted to accept the external airlock and
docking adapter needed for flights to the International Space Station.
This retention of an internal airlock allowed NASA to use Columbia for
the last Hubble Space Telescope servicing mission, along with the
Spacehab double module used on STS-107. If Columbia had not been
destroyed, it would have been fitted with an external airlock after
STS-107 for a flight to the International Space Station in 2003.
Columbia launches on its final mission, STS-107
On its final mission, the craft was
carrying the first Israeli astronaut, Ilan Ramon, and the first female
astronaut of Indian birth, Kalpana Chawla. Other crew members on the
final flight included Rick Husband (commander), Willie McCool (pilot),
Michael P. Anderson, Laurel Clark, and David M. Brown.
On the morning of February 1, 2003, the shuttle re-entered the
atmosphere after a 16-day scientific mission. NASA lost radio contact at
about 0900. EST, only minutes before the expected 0916 landing at
Kennedy Space Centre in Florida. Video recordings show the craft
breaking up in flames over Texas, at an altitude of approximately 39
miles (63 km) and a speed of 12,500 mph (5.6 km/s).
In the months following the tragedy, NASA scientists determined that a
hole was punctured in the leading edge on one of Columbia's wings, made
of a carbon-carbon composite. The hole had formed when a piece of
insulating foam from the external fuel tank peeled off during the launch
16 days earlier, puncturing the edge of the wing. Hot gases, referred to
by many reports as plasma, penetrated the interior of the wing,
destroying the support structure and causing the rest of the shuttle to
break apart during the intense heat of re-entry.
(The use of the word "plasma" to describe the gases that entered the
wing is not technically accurate, according to NASA and Boeing
aero-thermal engineers who support the Space Shuttle program at the NASA
Johnson Space Center in Houston, Texas. They pointed out during the
Columbia accident investigations that atmospheric entry heating and its
intrusion into damaged left wing was from superheated air, not ionized
gas and not plasma, though this technicality has largely been ignored by
the media.)
The collected debris of the vessel is currently stored on the 16th floor
of the Vehicle Assembly Building at the Kennedy Space Centre; recovered
items are occasionally loaned for research into the hypersonic flight
regime. NASA Administrator Sean O'Keefe has vowed that Columbia will not
be sealed away as the debris from the Challenger was. The debris from
Challenger is permanently entombed in two Minuteman missile silos at
KSC.
Date |
Designation |
Notes |
1981 April 12 |
STS-1 |
First Shuttle mission |
1981 November 12 |
STS-2 |
First re-use of manned space
vehicle |
1982 March 22 |
STS-3 |
Landed White Sands Missile Range |
1982 June 27 |
STS-4 |
Last shuttle R&D flight |
1982 November 11 |
STS-5 |
First 4 person crew |
1983 November 28 |
STS-9 |
First 6 person crew. 1st
Spacelab. |
1986 January 12 |
STS-61-C |
Representative Bill Nelson
(D-FL) on board |
1989 August 8 |
STS-28 |
Launched KH-11 reconnaissance
satellite |
1990 January 9 |
STS-32 |
Retrieved Long Duration Exposure
Facility |
1990 December 2 |
STS-35 |
Carried multiple X-ray & UV
telescopes |
1991 June 5 |
STS-40 |
5th Spacelab - Life Sciences-1 |
1992 June 25 |
STS-50 |
U.S. Microgravity Laboratory 1
(USML-1) |
1992 October 22 |
STS-52 |
Deployed Laser Geodynamic
Satellite II |
1993 April 26 |
STS-55 |
German Spacelab D-2 Microgravity
Research |
1993 October 18 |
STS-58 |
Spacelab Life Sciences |
1994 March 4 |
STS-62 |
United States Microgravity
Payload-2 (USMP-2) |
1994 July 8 |
STS-65 |
International Microgravity
Laboratory (IML-2) |
1995 October 20 |
STS-73 |
United States Microgravity
Laboratory (USML-2) |
1996 February 22 |
STS-75 |
Tethered Satellite System
Reflight (TSS-1R) |
1996 June 20 |
STS-78 |
Life and Microgravity Spacelab
(LMS) |
1996 November 19 |
STS-80 |
3rd flight of Wake Shield
Facility (WSF) |
1997 April 4 |
STS-83 |
Microgravity Science Laboratory
(MSL)- cut short |
1997 July 1 |
STS-94 |
Microgravity Science Laboratory
(MSL)- reflight |
1997 November 19 |
STS-87 |
United States Microgravity
Payload (USMP-4), Kalpana Chawla becomes first Indian-born astronaut
to fly on the space shuttle |
1998 April 13 |
STS-90 |
Neurolab - Spacelab |
1999 July 23 |
STS-93 |
Deployed Chandra X-ray
Observatory |
2002 March 1 |
STS-109 |
Hubble Space Telescope service
mission |
2003 January 16 |
STS-107 |
A multi-disciplinary
microgravity and Earth science research mission. Shuttle destroyed
during re-entry on February 1, 2003
and all seven astronauts on board killed. Hundreds of the nematoad
worms onboard for research survived. |
|