Sound of Perseverance Mars Rover Driving – Sol 16 (1:30 minutes)
The audio Is taken from the 16 minutes long file, and cut in the same part as the 90 seconds one. So same audio but no noise reduction
“Perseverance’s engineering team continues to evaluate the source of the scratching noise, which may either be electromagnetic interference from one of the rover’s electronics boxes or interactions between the rover mobility system and the Martian surface” You can check everything
No problem 🙂 In any case you can check nasa website to keep yourself informerd on all the cool stuff perseverance does
I have 3 theories:
electrical interference. I want to compare the screeching with motor current draw and see if there’s a correlation (but I need to find the time!)
high-frequency acoustics conducted through the structure (this will be nearly impossible to determine)
friction in the port bogie pivot. The microphone is mounted on a cable support doohickey due-aft of the port bogie pivot, aimed directly at the pivot. We could be hearing the internal workings of that joint. I don’t think this is the case because we hear the screeching immediately when motion starts and telemetry shows no motion of the suspension. But again, I’d like to overlay the acoustics with telemetry to look for correlations.
One thing that would be cool would be to look at this data in the frequency domain. I wonder if the audio is at a frequency that’s a natural mode of the structure. Any audiophiles out there want to make an FFT of this audio?
It would be nice to show a sound/video recording of Perseverence on Earth to see what’s different and stuff..
This is something that we’ve always wanted to do, but we do not have the EDLCam hardware installed on Optimism nor did we test this in ATLO due to scheduling constraints. I want to see if we can get it installed for a temporary test (think electronics zip-tied to the top of the chassis), to get a comparative data set, but I don’t think that’s in the cards for quite some time. That rover has a schedule worse than an overachieving kid with a helicopter-mom.
Are you really in perseverance team? I don’t know who trust, but you look real
Yes. I’m the lead mobility systems engineer. I helped sequence this drive and recording. I don’t have any good “proof” since we are all still work from home.
That creaking, though…