In this video, I introduce Problem 1 of the EM 304 (Mechanics of Materials) test that Dr. Judy Wood gave to her students on February 6, 2003, just 5 days after the Space Shuttle Columbia broke apar...
Transcript
Anyways, let's jump right in, so introduction. So this is a problem for Mechanics of Engineering Course EM304, the Dr. Judy Wood, author of the famous book, Where Did the Towers Go, and where I also put a link to it, basically, in all my math tutorials there. And yeah, highly recommend that. Yeah, so she gave to her class in Clemson University on... Yeah, on February 6, 2003. And she has sent me the test problem and solution ski so that I can make this tutorial, and you can view and download the PDF right here, this right here, if you go to MES.fm slash EM-3 -04, dash problem 1, dash Judy Wood. So I upload the PDF over there, and also here's the notes and article format, again, after I finish this video. But if you click on this one, it should open up again using a cloud and put it on my website. and there it is there's the full thing you can open in full screen yeah and yeah you can go over and read that and how she scores the problems there was actually four problems But in this one is this problem one of this one right here, but there's other problems are not shown, and also that she does an honor pledge I've neither given or received any unauthorized help on this exam. It's a pretty epic stuff there. So there it is, there is the full problem. You can go and scroll through it, and there is the solution key, and so on, and some notes from basically... test results from Scott Hubbard that was investigating the Space Shuttle Columbia. So now at the beginning, I'm going to cover this live footage, just so we get some context of the exam problem. So live footage of the space shuttle Columbia disaster, and I think I spelled this wrong disaster, or Z. So, yeah, so footage from February 1st, the... 2003 of the disaster can be seen at the two-minute timestamp as the space shuttle is disintegrating upon entry through the atmosphere. And you could go on here. This is Fox News live footage. NASA loses touch with shuttle just before landing. And I'll click this right here. Yeah, and here's the video right here. And actually, I'm going to go back 11 seconds because a pretty interesting sound right here. Play it right here. And the windows shook in their house. They thought it was a sonic boom going overhead, they said. No, the guy described it like a tornado, very loud and intense, shook his whole house. It was loud enough, and it was low enough, he thought, that it shook his building, but still, it's so incredibly high in the air. Yeah, it could have been an explosion rather than a structural failure, so, you know, that'll have to come in the analysis later on. You know, Captain Lovell, you know better than anyone really what these astronauts on board were experiencing as they were coming in for a landing. What's it like on board 16 minutes before you're supposed to land? I can imagine that everybody must be, is it tense or is it exciting? Well, I've never been on a shuttle of the orbiter, so I don't really know, but I was suspect there's sort of a side relief that coming back home. There's only 16 minutes from landing at the Cape. And, you know, we've had well over 100 of these flights, and the vehicles have worked perfectly, and so, you know, and actually, if you look at the analysis, all of our shuttle accidents have occurred inside or near, or in the atmosphere. So it's the atmospheric part of the flights that are probably the most critical for any kind of a failure. not live or not, anyways, it's pretty interesting. So then also at the 4331 time stamps, the thermal tile damage is mentioned as a possible cause. If I go over to, yeah, 4331. All right, here, over here, 4331 or just a second's behind them going to place. Because it could expose them to toxic propellants, so they're telling people instead to call 911. Shortly after launch on this mission, the launch on January 16th, it appears the piece of foam insulation broke off the external fuel tank and struck the shuttle's left wing, possibly damaging heat-resistant tiles designed to protect the shuttle during re-entry. That impact was on the left wing, and certainly we have all the indications that Milt talked to you about were on the left wing. We can't discount that there might be a connection. Okay, so I'm about the left wing there, and the thermal tile damage there. I couldn't find the footage in them showing it, but that's again, that's the same day, or a day or day after, depending on the time zone. And here is a thermal tile damage during the launch on January 16, 2003, in which a piece of foam from the rocket booster breaks off and strikes the left wing. You see it a bit here. I'll draw this in red and in blue here. So here's that tile right here. So apparently it's like a foam tile somewhere there, it falls over there. So it's floating in the Indus sky right there, and it's going to hit this wing, and it's going to, like, literally, dustify, according to the doctor. So I'm going to go back here. All right, so here's that video where I'm going to play this right here, Space Shuttle, Columbia, Debris Strike, January 16,03, Mission, STS 107. and it should be enhanced side view of the foam strike to Colombia's left wing, 81 .9 seconds after lift off from camera E212. So you can see right here, here's the frame with that, you can see it flying, and it hits it, and it dustifies across. So it strikes it there, and yeah, just basically 81 seconds during the launch, and then they flew all the way up, and then during re-entries, and when you're going super fast, and all that writes to it, and there's a foam strike, this is, we'll show that later, this was when they're doing analysis. on seeing a film can damage stuff. So I'm going to start closing some stuff, and let's get back into the show. So there it is. There's a little piece there. And, yeah, so Dr. Judy was saw that during the day and the days and so on news coverage, and then I thought might as well do a problem on this.