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No, elastic won't maintain a constant tension sufficient to forestall Unplanned Trouser Descent. It needs to be a constant force device and springs, elastic etc. won't work. I've been mulling along simiar lines myself and the thought I came up with was a smart belt buckle with serrated rollers that measured the force on the fixed part of the belt and pulled the tongue in and out accordingly on a minute by minute basis, with a "relax" sensor for use during big stuffy meals. But I've been beaten to it. |
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Look, elastic bungies are used as springs in aircraft suspensions; it'll work fine in this role, too. Don't need any serrated roller nonsense. |
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[sanwogawoga] without a description of how it is your self-adjusting waist-strap actually works, it is hard for anyone to evaluate the idea very well and unscrupulous users may hijack the idea and start going on about about feedback loops, Young's modulus, Hook's law and other things no one wants to read. So, it is better if you dwell on how it works rather than the reasons that you need, or want, it to work. |
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I demand closed-loop feedback through a PID controller to mantain constant tension under all service conditions <mutter, mutter> helicopter pilots, damn elastic band merchants all of them, madness if you ask me, proper aircraft have oleo-pneumatic struts; I mean, skids, I ask you, helicopters have skids, who uses skids other than the Wright brothers, and they only went a hundred metres, no good will come of it I tell you ..... </mutter mutter> |
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Elastic waistband pants have no button and are, therefore, inherently closed loop. Mr. curmudgeonly oleo strut man. |
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Young's modulus ...... Hook's law ...... I rest my case. |
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I think I must have one of these, but it's broken. It seems just to get tighter and tighter as the months go by. |
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