Tag results for failures
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unforeseen disasters: the chronicles of oh no and unexpected failures - youtube
Bookmarked 145 weeks ago keyword: unexpected failuresoh no disastersepic failsunforeseen challengesunexpected obstaclesdisastrous momentsfailures and comebacksohno fail compil |
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why are plane windows round
Bookmarked 530 weeks ago we often learn the most from our failures this is particularly true for advancements in the field of engineering unfortunately for the engineers in the aviation industry the prices to pay for failure are high this will be a reoccurring theme in my videos trust me the flip-side of this unforgiving industry is that it consistently provides learning opportunities for engineers because failure is not an option when peoples lives are at riskone of the greatest examples of this occurred during the development of cabin pressurisation the problems caused by cabin pressurisation didnt develop until the introduction of the first commercial jet powered aircraft the de havilland comet it entered service in 1952 and initially proved to be a massive success but just one year into service catastrophe struck three comets suffered fatal mid-flight disintegrations and the entire fleet was grounded until the cause was identifiedthe root of the problem was double-edged the introduction of jet engines required planes to fly even higher in order to make the fuel hungry engines economically viable less drag in the upper atmosphere means less fuel is needed as a plane increases in altitude the external atmospheric pressure lowers to a greater extent than the internal cabin pressure this creates a pressure differential that causes the fuselage to expand ever so slightly engineers accounted for this but the effects of repeated pressure cycles over time were not well known at the time over thousands of cycles and metal begins to fatigue and cracks can form at high stress locationsthe effects of stress concentration were also not well understood at the time stress concentration occurs when the flow of stress is interrupted square windows in contrast to modern oval windows provide a significant barrier to the smooth flow of stress because of this stress peaks at the sharp corner of the window and this is exactly where investigators determined the origin of failure to bethese combined phenomenon proved to be fatal today all airliners feature oval windows to avoid this stress concentration and comprehensive fatigue testing is required before a plane can be approved by the faa we often learn the most from our failures this is particularly true for advancements in the field of engineering these are now two basic concepts that every materials engineer is taught these events allowed us to further our understanding of materials and prevent further failuresfor licensing rights contact me at mcmanusbrian15gmailcomask before stealing my content looking at you dailymail |
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that looks bad
Bookmarked 713 weeks ago to keep these messages coming go to http:wwwdeclarationentertainmentcomladies and gentlemen bill whittle is proud to present just a few of the 1001 reasons to vote for barack obama at least he thinks he is hang on a sec -- there might be a misprint in there somewhere |
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idiot on the bike - youtube
Bookmarked 148 weeks ago check another video: why was the pregnancy event amazing and unforgettablehttps:youtubecomshortssiyvugptwc0feature=share joining our channel would give you access to exclusive content and the opportunity to connect with like-minded individuals who share your interests |
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what happened to the antarctic snow cruiser - youtube
Bookmarked 235 weeks ago get an entire year of both curiositystream and nebula for just 1479 here: http:curiositystreamcommustardsupport mustard on patreon: https:wwwpatreon |
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why things fall off cranes - youtube
Bookmarked 236 weeks ago things can and still go wrong with heavy lifts even when the crane is perfectly safe and sound get a year of curiositystream and nebula for 26 off just |
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a ghost standing on a man what is his reaction funny prank vines - youtube
Bookmarked 148 weeks ago prank funnyfails funny check another video: why was the pregnancy event amazing and unforgettablehttps:youtubecomshortssiyvugptwc0feature=share j |
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the handwich: disney039s failed sandwich of the future - youtube
Bookmarked 248 weeks ago go to https:buyrayconcomdefunctland for 15 off your order brought to you by rayconthis one got a bit out of handin this video kevin explore the hist |
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77: crime and prejudice
Bookmarked 748 weeks ago a brand new investigative and analytical documentary from the maker of 77: seeds of deconstruction it explores the 77 cold case via new evidence from the recent inquests and discusses the war on terror in the context of numerous miscarriages of justice and acts of violence committed by the state the first section of the film examines the history of the british state039s use of double agents from the victorian anarchists through ww2 to the war in northern ireland it concludes by examining contemporary cases of injustice and violence carried out as part of the war of terror against muslims the second section of the film is a multi-dimensional study of the new evidence made available at the recent inquests it looks at the evidence of a wider conspiracy and the fundamental flaws in the official narrative and the police investigation it also discusses why the dialogue about 039intelligence failures039 itself fails to address the very real possibility of state involvement in the attacks the final section of the film returns to the anarchists and the case of martial bourdin britain039s first suicide bomber in 1894 the mythology surrounding bourdin is used as a foundation for examining the numerous films tv shows training exercises and real life events that either predicted 77 or were influenced by the attacks the question of conspiracy theories is addressed through an original analysis unique to this film 77 crime and prejudice combines a presentation of the cutting edge of july 7th research with a deeply contextual analysis that casts light on largely unexamined aspects of the war on terror for further information about 77 please visit the website of the july 7th truth campaign and their dedicated 77 inquests blog:http:julyseventhcoukhttp:77inquestsblogspotcomto watch or download 77: crime and prejudice in avi format please visit these links:http:wwwdivxfishcomxh5en7bs6nb7htmlhttp:movbayorgt5u6062o0aa9htmlhttp:vidbullcom06a1mdszsu8ghtml |