ricci2
Second Officer
Flight distance : 61158 ft
France
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3x3q Posted at 2017-3-1 21:27
So I understand correctly, you recommend filling some of these carbon fiber tubes with non-newtonian fluid "oobleck"? Below is the poorly designed Ronin-MX mounting bracket.
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Hello 3x3q,
Yes, that's the idea, it might sound crazy but if you look, they are the link to transmit vibration. They act like a speaker cone. You could do a field fix, just wrap "Gaffa tape" around the bits of the tube you can get to but I would recommend you do a before and after flight because the tape might only yield small results. You might have some solid ally or solid fibreglass tube. The approach we took was to try and isolate the frequencies being transmitted down the suspension tubes so we could separate the actual source of the vibration and apply localised filtration, i.e., silicon damping tuned to the correct frequencies. With tubes acting as amplifiers and lack of rigidity the mounting setup for the ronin lacks refinement in some respects but good in others, the main cause is the vast amount of variable vibration sources combined over a wide spectrum. Our department consisted of five scientist and tons of test gear just to find the issue. Looking at the cradle for the ronin shows they wanted to keep the gimbal secure, light weight , however having four mounts means four possible transmission routes, a single attachment would be better. In Dji"s defence the complex diverse craft they design are at the beginning of the design stage and if you want 98% success pay the price the aeronautical industry and NASSA will do for proven tested gear! I am sure DJI never envisaged where the clever and industrious folk of the drone world would take it, so they might be forgiven for being on the back foot. Just had a thought about the whole ronin system, its all made from hollow tube, you might like to consider filling that if its assessable.
Heavy on ideas, light on answers as yet.
Ricci
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