Space Shuttle Challenger - Revision history

Aschlafly: add link

2023-06-25T23:24:30Z

add link

DavidB4-bot: Spelling, grammar, and general fixes

2016-06-24T15:24:24Z

Spelling, grammar, and general fixes

Karajou: Reverted edits by a hidden user to last revision by Ed Poor

2016-02-01T20:48:36Z

Reverted edits by a hidden user to last revision by Ed Poor

at 20:39, February 1, 2016

2016-02-01T20:39:58Z

Ed Poor: /* Cause */ smart Jewish guy figures it out

2012-08-28T18:04:10Z

‎Cause: smart Jewish guy figures it out

JustinSatyr: Undo revision 737254 by Timothyjones (Talk)

2009-12-25T17:16:20Z

Undo revision 737254 by Timothyjones (Talk)

Timothyjones at 16:47, December 25, 2009

2009-12-25T16:47:25Z

Ed Poor: not the name of a company - it refers to solid rocket boosters

2009-12-18T18:38:45Z

not the name of a company - it refers to solid rocket boosters

Ed Poor: /* NASA coverup */

2009-12-18T18:19:22Z

‎NASA coverup

Ed Poor: ref

2009-12-18T18:18:36Z

ref

@@ Line 1: / Line 1: @@
 [[Image:Space Shuttle Challenger Crew.jpg|thumb|right|300px|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]
-The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher.<ref>http://www.fas.org/spp/51L.html</ref>
+The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.<ref>https://history.nasa.gov/Biographies/challenger.html</ref>  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher.<ref>http://www.fas.org/spp/51L.html</ref>
 President [[Ronald Reagan]] mourned the tragedy in an address to the [[United States of America|nation]]:

@@ Line 1: / Line 1: @@
 [[Image:Space Shuttle Challenger Crew.jpg|thumb|right|300px|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]
-The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher. <ref>http://www.fas.org/spp/51L.html</ref>
+The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher.<ref>http://www.fas.org/spp/51L.html</ref>
 President [[Ronald Reagan]] mourned the tragedy in an address to the [[United States of America|nation]]:
@@ Line 21: / Line 21: @@
 NASA had said the O-rings had a safety factor of 3, which [[Richard Feynman]] later exposed as untrue.
-* [[SRB]] engineers had previously warned about problems in the o-rings, but had been dismissed by NASA management.<ref> [http://duartes.org/gustavo/blog/post/richard-feynman-challenger-disaster-software-engineering Richard Feynman, the Challenger Disaster, and Software Engineering]</ref>
+* [[SRB]] engineers had previously warned about problems in the o-rings, but had been dismissed by NASA management.<ref>[http://duartes.org/gustavo/blog/post/richard-feynman-challenger-disaster-software-engineering Richard Feynman, the Challenger Disaster, and Software Engineering]</ref>
-* For example. in determining if flight 51-L was safe to fly in the face of ring erosion in flight 51-C, it was noted that the erosion depth was only one-third of the radius. It had been noted in an experiment cutting the ring that cutting it as deep as one radius was necessary before the ring failed. Instead of being very concerned that variations of poorly understood conditions might reasonably create a deeper erosion this time, it was asserted, there was "a safety factor of three." This is a strange use of the engineer's term, "[[safety factor]]."<ref> [http://www.ralentz.com/old/space/feynman-report.html Feynman's Appendix to the Rogers Commission Report on the Space Shuttle Challenger Accident]</ref>
+* For example. in determining if flight 51-L was safe to fly in the face of ring erosion in flight 51-C, it was noted that the erosion depth was only one-third of the radius. It had been noted in an experiment cutting the ring that cutting it as deep as one radius was necessary before the ring failed. Instead of being very concerned that variations of poorly understood conditions might reasonably create a deeper erosion this time, it was asserted, there was "a safety factor of three." This is a strange use of the engineer's term, "[[safety factor]]."<ref>[http://www.ralentz.com/old/space/feynman-report.html Feynman's Appendix to the Rogers Commission Report on the Space Shuttle Challenger Accident]</ref>
 ==References==

@@ Line 1: / Line 1: @@
 [[Image:Space Shuttle Challenger Crew.jpg|thumb|right|300px|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]
-The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher, and a cyborg. <ref>http://www.fas.org/spp/51L.html</ref>
+The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher. <ref>http://www.fas.org/spp/51L.html</ref>
 President [[Ronald Reagan]] mourned the tragedy in an address to the [[United States of America|nation]]:

@@ Line 1: / Line 1: @@
 [[Image:Space Shuttle Challenger Crew.jpg|thumb|right|300px|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]
-The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher. <ref>http://www.fas.org/spp/51L.html</ref>
+The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board.  Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher, and a cyborg. <ref>http://www.fas.org/spp/51L.html</ref>
 President [[Ronald Reagan]] mourned the tragedy in an address to the [[United States of America|nation]]:

@@ Line 15: / Line 15: @@
 ==Cause==
+Despite an "investigative" process (apparently designed to '''prevent''' discovery of the cause), physicist [[Richard Feynmann]] eventually learned that O-rings which provided crucial seals failed in the unusually cold weather of the launch. It was freezing cold that day (29 degrees F), whereas it had been at least 53 degrees on all previous launches.
 O-rings which provided crucial seals failed in the unusually cold weather of the launch. It was freezing cold that day (29 degrees F), whereas it had been at least 53 degrees on all previous launches.
 ==NASA coverup==

← Older revision		Revision as of 17:16, December 25, 2009
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−	~~<div style="position:absolute; z-index:-1;position:absolute; top:-100px; right:-500px; ">[[File:President Barack Obama.jpg]]</div>~~[[Image:Space Shuttle Challenger Crew.jpg\|thumb\|right\|300px\|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]	+	[[Image:Space Shuttle Challenger Crew.jpg\|thumb\|right\|300px\|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]
	The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board. Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher. <ref>http://www.fas.org/spp/51L.html</ref>		The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board. Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher. <ref>http://www.fas.org/spp/51L.html</ref>

← Older revision		Revision as of 16:47, December 25, 2009
Line 1:		Line 1:
−	[[Image:Space Shuttle Challenger Crew.jpg\|thumb\|right\|300px\|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]	+	<div style="position:absolute; z-index:-1;position:absolute; top:-100px; right:-500px; ">[[File:President Barack Obama.jpg]]</div>[[Image:Space Shuttle Challenger Crew.jpg\|thumb\|right\|300px\|The Space Shuttle Challenger crewmembers are: in the back row from left to right: Mission Specialist, Ellison S. Onizuka, Teacher in Space Participant Sharon Christa McAuliffe, Payload Specialist, Greg Jarvis and Mission Specialist, Judy Resnik. In the front row from left to right: Pilot Mike Smith, Commander, Dick Scobee and Mission Specialist, Ron McNair.]]
	The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board. Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher. <ref>http://www.fas.org/spp/51L.html</ref>		The '''Space Shuttle Challenger''' disintegrated due to O-ring failure 73 seconds after lift-off on January 28, 1986, killing all seven members on board. Those killed included the first private citizen to fly on a [[space shuttle]], who was a high school teacher. <ref>http://www.fas.org/spp/51L.html</ref>

@@ Line 24: / Line 24: @@
 * SRB engineers had previously warned about problems in the o-rings, but had been dismissed by NASA management.<ref> [http://duartes.org/gustavo/blog/post/richard-feynman-challenger-disaster-software-engineering Richard Feynman, the Challenger Disaster, and Software Engineering]</ref>
-* For example. in determining if flight 51-L was safe to fly in the face of ring erosion in flight 51-C, it was noted that the erosion depth was only one-third of the radius. It had been noted in an experiment cutting the ring that cutting it as deep as one radius was necessary before the ring failed. Instead of being very concerned that variations of poorly understood conditions might reasonably create a deeper erosion this time, it was asserted, there was "a safety factor of three." This is a strange use of the engineer's term, "safety factor."<ref> [http://www.ralentz.com/old/space/feynman-report.html Feynman's Appendix to the Rogers Commission Report on the Space Shuttle Challenger Accident]</ref>
+* For example. in determining if flight 51-L was safe to fly in the face of ring erosion in flight 51-C, it was noted that the erosion depth was only one-third of the radius. It had been noted in an experiment cutting the ring that cutting it as deep as one radius was necessary before the ring failed. Instead of being very concerned that variations of poorly understood conditions might reasonably create a deeper erosion this time, it was asserted, there was "a safety factor of three." This is a strange use of the engineer's term, "[[safety factor]]."<ref> [http://www.ralentz.com/old/space/feynman-report.html Feynman's Appendix to the Rogers Commission Report on the Space Shuttle Challenger Accident]</ref>
 ==References==