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#13
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10-30-2022, 06:33 PM
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Re: Russia - 2 Dead In Ultralight Accident
Thanks WM~ your knowledge about aviation is very appreciated. As for falling that fast…. Humans are very fragile. We break bones being only a few feet off the ground let alone falling from 500… I was a skydiver for a while in my life. Wonderful experience~ Thanks again for the lesson! |
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#14
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10-30-2022, 07:09 PM
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| My Rank: CORPORAL Poster Rank:1429 Join Date: May 2021 Posts: 409 Mentioned: 2 Post(s) Quoted: 159 Post(s)
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Re: Russia - 2 Dead In Ultralight Accident
Just to be a know it all asshole, this is an ultralight not a glider
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#20
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10-30-2022, 11:52 PM
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| ♚ Legacy Gold Member ♚ Poster Rank:99 Male Join Date: Nov 2009 Posts: 16,563 Mentioned: 7 Post(s) Quoted: 4569 Post(s)
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Re: Russia - 2 Dead In Ultralight Accident
I just noticed something else. If you watch the thing, he is diving, and I thought he was going to pull up in a loop, but then he pushes the nose down, to go inverted. Thus, he reversed the load on the airframe. Many lightly-built aircraft have different G ratings, plus or minus. That is they may take 4-5 G.s under a positive loading, like pulling out of a dive, BUT THEY MAY ONLY BE ENGINEERED FOR -2 G's under negative loads, under the idea that most loads on an airplane are positive G loads. This is a common rating, especially for aircraft that have a prohibition against aerobatics, where you would never (or at least very rarely) see any negative G's. But when he went to go the opposite way, he loaded the aircraft under NEGATIVE G's, for which this aircraft was only very lightly built. So, he as fine during his dive and pullout, but when he went negative, the 5 G's turned to negative 5 G's, and if the structure was one of those that is engineered +5 and -2, the structure went to instant overload and collapsed. I had to watch the video about 5 times to see clearly what he did. Positive G's are when you go down a steep hill on a road in your car, and sink into the seat when you get to the bottom of the hill and start going back up the next hill. Negative G's are when you come over the top of a steep hill, and get lifted out of your seat on a roller coaster road. Again, he should have read the flight manual. If he had continued his original maneuver and zoomed around, he might have been OK. It was when he went negative that everything fell apart. Hope he didn't kill his girlfriend. There are going to be a lot of sad Russian girlfriends who will need consoling after the Ukraine war. Similar to the situation in England after WWI, where the entire generation of young men was wiped out, and the women of that generation wound up marrying a lot of Americans, because all the British guys were dead. Except the British died for a good cause, whereas the Russian men are just getting killed for nothing. But this has no bearing on Russians flying ultralights. The only thing that matters there is gravity. |