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Space Shuttle Challenger Explosion
Challenger Space Shuttle O Ring Explosion SRM Joint
http://www.challenger-o-ring.com/
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    Space Shuttle Challenger Explosion
  2. < meta > Description
    Challenger Space Shuttle O Ring Explosion SRM Joint
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  5. Search Engine Recommended Keywords
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  6. Captured Content
    Historical accuracy in recounting the "fundamentally flawed" SRM joints of the Space Shuttle Challenger. Home About Us Jun 12th 2012 08:34am. STS-51-L Space Shuttle Challenger Explosion. A Fundament Flaw in SRM Joint Design. One of the most astute summaries of the cause of the Challenger explosion came from a lawyer, not an engineer. David Acheson, one of members of the Presidential Commission on the Space Shuttle Challenger Accident, said the following during the hearings. "A lot of material we have received, one reads that the designers, presumably both the corporate designers and the NASA supervisors, believe the joint was designed to compress and seal in the gas tight under combustion pressure. And it turns out very quickly in the joint history that it did the opposite. I just don't understand why the program then decided to go into a lot of little fixes to see if you could compensate for the. It is easier to blame a thing than to blame people. was the response of a Navy SEAL and son of one of the Apollo capsule design engineers when told about the joint rotation flaw in the Space Shuttle solid rocket motor (SRM). Indeed, it is easier to blame cold temperatures and a decision made at the last minute and under management pressure rather than to blame an engineering design flaw which was ignored by the engineering departments of Morton Thiokol and NASA s Marshall Space Flight Center. This flaw was ignored for years, in spite of numerous warnings both from the SRM s and from engineers who flagged the problem. Parker Hannifin is one of the world s leading authorities on O-Ring design. In the Parker O-Ring Handbook ORD 5700 paragraph 4.0 says It has been said that O-rings are the finest static seals ever developed. Perhaps the prime reason for this is because they are almost human proof. If the gland has been designed and machined properly. The disaster of Challenger mission STS-51-L was the result of human engineering error. The simple no spin truth is the O-ring gland was not properly designed. While this issue surfaced a number of times during the hearings of Presidential Commission on the Space Shuttle Challenger Accident , the Commission focused on cold temperatures and the last minute decision to launch during cold temperatures. Perhaps the consequences of highlighting the fundamental problem would not have been in what Chairman Rogers called the national interest. The theme of Allan McDonald s book Truth, Lies and O-Rings is that cold temperature was the major culprit in the Challenger explosion. However, McDonald admits repeatedly the joint design was flawed and this was the primary problem. The flaw is simply this: when pressurized, the joint opens up and the O-ring gland becomes grossly improperly configured. Cold O-rings may well aggravate this condition but a lot of things aggravate an incorrect O-ring gland configuration. Following are brief excerpts from Truth, Lies and O-Rings. Note that emphasis has been added. Also note that FWC is an acronym for Filament Wound Case. FWC were composite cylinders which reduced SRM weight. Hercules Aerospace was developing the FWC SRM design for NASA Marshall Space Flight Center and their u ...
Space Shuttle Challenger Explosion
Challenger Space Shuttle O Ring Explosion SRM Joint. Historical accuracy in recounting the "fundamentally flawed" SRM joints of the Space Shuttle Challenger
http://challenger-o-ring.com/
Space Shuttle Challenger disaster - Wikipedia, the free encyclopedia
The Space Shuttle Challenger disaster occurred on January 28, 1986, when Space Shuttle Challenger (mission STS-51-L) broke apart 73 seconds into its flight, leading ...
http://en.wikipedia.org/wiki/Space_Shuttle_Challenger_disaster
O-ring - Wikipedia, the free encyclopedia
An O-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus ; it is a loop of elastomer with a disc -shaped cross-section ...
http://en.wikipedia.org/wiki/O-ring
Challenger Space Shuttle
See the web site http://www.dcs.gla.ac.uk/research/gaag for additional information on the relationship between human error and organisational failure and technques ...
http://www.tech.plym.ac.uk/sme/Interactive_Resources/tutorials/FailureCases/hs1.html
OEC - Challenger O-Ring Data Analysis
Challenger O-Ring Data Analysis . Author(s): Dr. Joseph H. Wujek, P.E. College of Engineering University of California, Berkeley . Suitable for courses in applied ...
http://www.onlineethics.org/cms/4869.aspx
Bayesian Re-analysis of the Challenger O-ring Data
Bayesian Re-analysis of the Challenger O-ring Data by Coire J. Maranzano The Johns Hopkins University Applied Physics Laboratory 11100 Johns Hopkins Rd
http://www.faculty.virginia.edu/rk/Bayesian%20Re-analysis%20of%20the%20Challenger%20O-ring%20Data.pdf
Challenger Picture - O-Ring Tracks - 20th Century History
A picture of O-ring tracks, recovered from the Space Shuttle Challenger debris. Samples of the track material indicated that they were not composed of degraded O-ring ...
http://history1900s.about.com/od/photographs/ig/Space-Shuttle-Challenger/O-Ring-Tracks.htm
Aerospaceweb.org | Ask Us - Space Shuttle Challenger Disaster
Ask a question about aircraft design and technology, space travel, aerodynamics, aviation history, astronomy, or other subjects related to aerospace engineering.
http://www.aerospaceweb.org/question/investigations/q0122.shtml
The Space Shuttle Challenger Accident | davinder mahal | articles ...
On Jan 28, '86 the Space Shuttle Challenger left Florida and only 73 seconds into launch exploded killing all on board. What happened and why?
http://www.mahal.org/articles/space/1995/12/the-space-shuttle-challenger-accident/page/1
Challenger - O-Ring Failure Caused the Disaster - Awesome Stories
During a televised hearing on the Challenger explosion, Dr. Richard Feynman cross-examines a key NASA employee. With a simple experiment, he reveals why the shuttle ...
http://www.awesomestories.com/assets/challenger-oring-failure-caused-the-disaster-1
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