Names | Space Transportation System-25 |
---|---|
Mission type | Satellite deployment |
Operator | NASA |
Mission duration | 6 days and 34 minutes (planned) 1 minute and 13 seconds (achieved) |
Distance travelled | 18 mi (29 km) |
Orbits completed | Failed to achieve orbit (96 planned) |
Spacecraft properties | |
Spacecraft | Space Shuttle Challenger |
Launch mass | 2,685,210 lb (1,217,990 kg) |
Landing mass | 199,704 lb (90,584 kg) (planned) |
Payload mass | 48,363 lb (21,937 kg) |
Crew | |
Crew size | 7 |
Members | |
Start of mission | |
Launch date | January 28, 1986, 16:38:00 UTC (11:38 am EST) |
Launch site | Kennedy, LC-39B |
Contractor | Rockwell International |
End of mission | |
Destroyed | January 28, 1986, 16:39:13 UTC (11:39:13 am EST) |
Landing date | February 3, 1986, 17:12:00 UTC (12:12 pm EST) (planned) [1] |
Landing site | Kennedy, SLF Runway 33 (planned) |
Orbital parameters | |
Reference system | Geocentric orbit (planned) |
Regime | Low Earth orbit |
Perigee altitude | 177 mi (285 km) |
Apogee altitude | 183 mi (295 km) |
Inclination | 28.45° |
Period | 90.40 minutes |
Instruments | |
| |
STS-51-L mission patch Back row: Onizuka, McAuliffe, Jarvis and Resnik Front row: Smith, Scobee and McNair |
STS-51-L was the disastrous 25th mission of NASA's Space Shuttle program and the final flight of Space Shuttle Challenger.
It was planned as the first Teacher in Space Project flight in addition to observing Halley's Comet for six days and performing a routine satellite deployment. The mission never achieved orbit; a structural failure during its ascent phase 73 seconds after launch from Kennedy Space Center Launch Complex 39B on January 28, 1986, killed all seven crew members —Commander Francis R. "Dick" Scobee, Pilot Michael J. Smith, Mission Specialists Ellison S. Onizuka, Judith A. Resnik and Ronald E. McNair, and Payload Specialists Gregory B. Jarvis and S. Christa McAuliffe—and destroyed the orbiter.
Immediately after the failure, President Ronald Reagan convened the Rogers Commission to determine the cause of the explosion. The failure of an O-ring seal on the starboard Solid Rocket Booster (SRB) was determined to have caused the shuttle to break up in flight. Space Shuttle flights were suspended for 32 months while the O-rings and other hazards that could have destroyed the vehicle on following missions were addressed. Shuttle missions resumed in September 1988 with STS-26.
The tenth mission for Challenger, STS-51-L, was scheduled to deploy the second in a series of Tracking and Data Relay Satellites (TDRS-B), carry out the first flight of the "Shuttle Pointed Autonomous Research Tool for Astronomy" (SPARTAN-203) / Halley's Comet Experiment Deployable in order to observe Halley's Comet, and carry out several lessons from space as part of the Teacher in Space Project and Shuttle Student Involvement Program (SSIP). The flight marked the first American orbital mission to involve in-flight fatalities. It was also the first American human spaceflight mission to launch and fail to reach space; the first such mission in the world had been the Soviet Soyuz 18a mission, in which the two crew members had survived. Gregory Jarvis was originally scheduled to fly on the previous shuttle flight (STS-61-C), but he was reassigned to this flight and replaced by Congressman Clarence W. "Bill" Nelson. [2]
Position | Astronaut | |
---|---|---|
Commander | Francis R. "Dick" Scobee Would have been second spaceflight | |
Pilot | Michael J. Smith Would have been first spaceflight | |
Mission Specialist 1 | Ellison S. Onizuka Would have been second spaceflight | |
Mission Specialist 2 Flight Engineer | Judith A. Resnik Would have been second spaceflight | |
Mission Specialist 3 | Ronald E. McNair Would have been second spaceflight | |
Payload Specialist 2 | Gregory B. Jarvis Would have been first spaceflight Hughes Space and Communications | |
Payload Specialist 1 | S. Christa McAuliffe Would have been first spaceflight Teacher in Space Project |
Position | Astronaut | |
---|---|---|
Payload Specialist 1 | L. William Butterworth Hughes Space and Communications | |
Payload Specialist 2 [3] | Barbara R. Morgan Teacher in Space Project | |
Morgan would be selected as a NASA astronaut in 1998 and flew on STS-118 in 2007 as a mission specialist. |
This seating assignment chart depicts what would have happened if the mission had been performed as planned.
Seat [4] | Launch | Landing (planned) | Seats 1–4 are on the flight deck. Seats 5–7 are on the mid-deck. |
---|---|---|---|
1 | Scobee | ||
2 | Smith | ||
3 | Onizuka | McNair | |
4 | Resnik | ||
5 | McNair | Onizuka | |
6 | Jarvis | ||
7 | McAuliffe |
During the ascent phase, 73 seconds after liftoff, the vehicle experienced a catastrophic structural failure resulting in the loss of crew and vehicle. The Rogers Commission later determined the cause of the accident to have been the failure of the primary and secondary (backup) O-ring seals on Challenger's right Solid Rocket Booster (SRB). The failure of these seals allowed a flamethrower-like flare to impinge upon one of two aft SRB attach struts, which eventually failed, freeing the booster to pivot about its remaining attachment points. The forward part of the booster cylinder struck the external tank inter-tank area, leading to a structural failure of the Space Shuttle external tank (ET) – the core structural component of the entire stack. A rapid burning of liberated propellants ensued. With the structural "backbone" of the stack compromised and breaking up, the SRBs flew off on their own, as did the orbiter, which rapidly broke up due to overwhelming aerodynamic forces. The launch had been approved despite a predicted ambient temperature of 27 °F (−3 °C), well below the qualification limit of major components such as the SRBs, which had been certified for use only at temperatures above 39 °F (4 °C). [5] Evidence found in the remnants of the crew cabin showed that several of the emergency Personal Egress Air Packs (PEAPs) carried by the astronauts had been manually activated, suggesting that forces experienced inside the cabin during breakup of the orbiter were not inherently fatal, and that at least three crew members were alive and capable of conscious action for a period following vehicle breakup. [6] "Tracking reported that the vehicle had exploded and impacted the water in an area approximately located at 28.64° north, 80.28° west". [7]
Divers from the USS Preserver located what they believed to be the crew cabin on the ocean floor on March 7, 1986. A dive the following day confirmed that it was the cabin and that the remains of the crew were inside. [8] No official investigation into the Challenger disaster has determined the cause of death of the astronauts; it is almost certain that the explosion itself did not kill the entire crew as 3 of the 4 Personal Egress Air Packs (PEAPs) that were recovered had been manually activated. This would only be done during an emergency or loss of cabin pressure. PEAPs do not provide a pressurized air flow and would still have resulted in the astronauts losing consciousness within several seconds. [9] There were media reports alleging that NASA had a tape recording of the crew panicking and on-board conversation following the explosion during the 2 minute 45 second free fall before hitting the sea east of Florida. This was likely fabricated and no recording exists, as the crew may have been unconscious from loss of cabin pressure and the astronauts did not wear individual voice recorders. [10]
Attempt | Planned | Result | Turnaround | Reason | Decision point | Weather go (%) | Notes |
---|---|---|---|---|---|---|---|
1 | 25 Jan 1986, 9:37:00 am | Scrubbed | — | Weather | Weather at transatlantic abort site | ||
2 | 27 Jan 1986, 9:37:00 am | Scrubbed | 2 days 0 hours 0 minutes | Weather and technical | 27 Jan 1986, 12:35 pm (T−00:09:00 hold) | Equipment failures in orbiter closeout, cross winds at shuttle landing site. [11] | |
3 | 28 Jan 1986, 11:38:00 am | Failure | 1 day 2 hours 1 minute | Technical | 28 Jan 1986, 11:39 am (T+00:01:13) | Originally scheduled for 9:37 AM, the launch was delayed due to technical issues with fire detection system. Loss of crew and vehicle. Right SRB O-ring failure and orbiter vehicle disintegration. [1] |
Francis R. "Dick" Scobee asked Kennedy Space Center engineer Ernie Reyes to design the mission patch seen above to represent the mission STS-51-L. In it, Challenger is depicted launching from Florida and soaring into space to carry out a variety of goals. Among the prescribed duties of the five astronauts and two payload specialists (represented by the seven stars of the U.S. flag) was observation and photography of Halley's Comet, backdropped against the U.S. flag in the insignia. Surnames of the crew members encircle the scene, with the payload specialists being recognized below. The surname of the first teacher in space, S. Christa McAuliffe, is followed by a symbolic apple. [12]
The Space Shuttle is a retired, partially reusable low Earth orbital spacecraft system operated from 1981 to 2011 by the U.S. National Aeronautics and Space Administration (NASA) as part of the Space Shuttle program. Its official program name was Space Transportation System (STS), taken from the 1969 plan led by U.S. Vice President Spiro Agnew for a system of reusable spacecraft where it was the only item funded for development.
Space Shuttle Challenger (OV-099) was a Space Shuttle orbiter manufactured by Rockwell International and operated by NASA. Named after the commanding ship of a nineteenth-century scientific expedition that traveled the world, Challenger was the second Space Shuttle orbiter to fly into space after Columbia, and launched on its maiden flight in April 1983. It was destroyed in January 1986 soon after launch in a disaster that killed all seven crewmembers aboard.
The Space Shuttle program was the fourth human spaceflight program carried out by the U.S. National Aeronautics and Space Administration (NASA), which accomplished routine transportation for Earth-to-orbit crew and cargo from 1981 to 2011. Its official program name was Space Transportation System (STS), taken from a 1969 plan for a system of reusable spacecraft where it was the only item funded for development, as a proposed nuclear shuttle in the plan was cancelled in 1972. It flew 135 missions and carried 355 astronauts from 16 countries, many on multiple trips.
Francis Richard "Dick" Scobee was an American pilot, engineer, and astronaut. He was killed while commanding the Space Shuttle Challenger in 1986, which suffered catastrophic booster failure during launch of the STS-51-L mission.
STS-9 was the ninth NASA Space Shuttle mission and the sixth mission of the Space Shuttle Columbia. Launched on November 28, 1983, the ten-day mission carried the first Spacelab laboratory module into orbit.
STS-6 was the sixth NASA Space Shuttle mission and the maiden flight of the Space ShuttleChallenger. Launched from Kennedy Space Center on April 4, 1983, the mission deployed the first Tracking and Data Relay Satellite, TDRS-1, into orbit, before landing at Edwards Air Force Base on April 9, 1983. STS-6 was the first Space Shuttle mission during which a Extravehicular activity was conducted, and hence was the first in which the Extravehicular Mobility Unit (EMU) was used.
Judith Arlene Resnik was an American electrical engineer, software engineer, biomedical engineer, pilot and NASA astronaut who died in the Space Shuttle Challenger disaster. She was the fourth woman, the second American woman and the first Jewish woman of any nationality to fly in space, logging 145 hours in orbit.
On January 28, 1986, the Space Shuttle Challenger broke apart 73 seconds into its flight, killing all seven crew members aboard. The spacecraft disintegrated 46,000 feet (14 km) above the Atlantic Ocean, off the coast of Cape Canaveral, Florida, at 11:39 a.m. EST. It was the first fatal accident involving an American spacecraft while in flight.
STS-8 was the eighth NASA Space Shuttle mission and the third flight of the Space Shuttle Challenger. It launched on August 30, 1983, and landed on September 5, 1983, conducting the first night launch and night landing of the Space Shuttle program. It also carried the first African-American astronaut, Guion Bluford. The mission successfully achieved all of its planned research objectives, but was marred by the subsequent discovery that a solid-fuel rocket booster had almost malfunctioned catastrophically during the launch.
STS-51-C was the 15th flight of NASA's Space Shuttle program, and the third flight of Space Shuttle Discovery. It launched on January 24, 1985, and made the fourth shuttle landing at the Shuttle Landing Facility at the Kennedy Space Center in Florida on January 27, 1985. STS-51-C was the first shuttle mission dedicated to the United States Department of Defense (DoD), and consequently many details remain classified. NASA reported that a satellite (USA-8) was deployed during the mission using an Inertial Upper Stage booster was deployed and met mission objectives. At just over three days, the mission was shorter in duration than most civilian missions and was the shortest of Discovery's career.
STS-51-D was the 16th flight of NASA's Space Shuttle program, and the fourth flight of Space Shuttle Discovery. The launch of STS-51-D from Kennedy Space Center (KSC), Florida, on April 12, 1985, was delayed by 55 minutes, after a boat strayed into the restricted Solid Rocket Booster (SRB) recovery zone. STS-51-D was the third shuttle mission to be extended.
STS-61-B was the 23rd NASA Space Shuttle mission, and its second using Space Shuttle Atlantis. The shuttle was launched from Kennedy Space Center, Florida, on November 26, 1985. During STS-61-B, the shuttle crew deployed three communications satellites, and tested techniques of constructing structures in orbit. Atlantis landed at Edwards Air Force Base, California, at 16:33:49 EST on December 3, 1985, after 6 days, 21 hours, 4 minutes, and 49 seconds in orbit.
STS-61-C was the 24th mission of NASA's Space Shuttle program, and the seventh mission of Space Shuttle Columbia. It was the first time that Columbia, the first space-rated Space Shuttle orbiter to be constructed, had flown since STS-9. The mission launched from Florida's Kennedy Space Center on January 12, 1986, and landed six days later on January 18, 1986. STS-61-C's seven-person crew included the first Costa Rican-born astronaut, Franklin Chang-Díaz, the second African-American shuttle pilot, Charles Bolden, and the second sitting politician to fly in space, Rep. Bill Nelson (D-FL). Both Bolden and Nelson would also later go on to become Administrators of NASA. STS-61-C was the last shuttle mission before the Space Shuttle Challenger disaster, which occurred ten days after STS-61-C's landing.
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.
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.
STS-33 was a NASA Space Shuttle mission and the 9th flight of Discovery, during which Space Shuttle Discovery deployed a payload for the United States Department of Defense (DoD). It was the 32nd shuttle mission overall, the ninth flight of Discovery, the fifth shuttle mission in support of the DoD, the seventh post-Space Shuttle Challenger disaster mission and the last Shuttle mission of the 1980s. Due to the nature of the mission, specific details remain classified. Discovery lifted off from Launch Complex 39B at Kennedy Space Center (KSC), Florida, on November 22, 1989, at 7:23:30 p.m. EST; it landed at Edwards Air Force Base, California, on November 27, 1989, at 7:30:16 p.m. EST.
STS-112 was an 11-day Space Shuttle mission to the International Space Station (ISS) flown by Space ShuttleAtlantis. Space Shuttle Atlantis was launched on 7 October 2002 at 19:45 UTC from the Kennedy Space Center's launch pad 39B to deliver the 28,000 pound Starboard 1 (S1) truss segment to the Space Station. Ending a 4.5-million-mile journey, Atlantis landed at 15:44 UTC on 18 October 2002 on runway 33 at the Kennedy Space Center's Shuttle Landing Facility.
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.
STS-80 was a Space Shuttle mission flown by Space Shuttle Columbia. The launch was originally scheduled for October 31, 1996, but was delayed to November 19 for several reasons. Likewise, the landing, which was originally scheduled for December 5, was pushed back to December 7 after bad weather prevented landing for two days.
Space Shuttle abort modes were procedures by which the nominal launch of the NASA Space Shuttle could be terminated. A pad abort occurred after ignition of the shuttle's main engines but prior to liftoff. An abort during ascent that would result in the orbiter returning to a runway or to an orbit lower than planned was called an "intact abort", while an abort in which the orbiter would be unable to reach a runway, or any abort involving the failure of more than one main engine, was called a "contingency abort". Crew bailout was still possible in some situations in which the orbiter could not land on a runway.