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The US Navy uses an Xbox 360 controller in active service [0] Mass market has a lot of R&D to leverage so it makes sense. Nothing to say this is the cause of the fault and probably going to be more reliable than something hand rolled. [0] https://www.theverge.com/2017/9/19/16333376/us-navy-military...
Stupid question, perhaps: was/it possible for this sub to have any kind of beaconing or communication system that works at depth? It seems like one of this first things I'd investigate before deciding to build a sub.
Summary: water attenuates radio signals, and a 4Km cable is going to be way heavy and subject to currents.
> According to the BBC, the entire sub is bolted shut from the outside, so even if the vessel surfaces, the occupants cannot escape without outside assistance and could suffocate within the capsule. Why is the submarine bolted shut from the outside?
On one hand, 'if it ain't broke' etc. On the other, 'wait, what?'. The entire operation manages to somehow feel both incredibly sophisticated (it's not easy to get a sub to that depth) and simultaneously incredibly stupid.
What's wrong with using COTS components?
Stupid question, perhaps: was/it possible for this sub to have any kind of beaconing or communication system that works at depth? It seems like one of this first things I'd investigate before deciding to build a sub.
Summary: water attenuates radio signals, and a 4Km cable is going to be way heavy and subject to currents.
https://oceanexplorer.noaa.gov/explorations/sound01/backgrou...
https://news.cornell.edu/stories/2005/02/secrets-whales-long...
The sub should have had an acoustic transponder that broadcast telemetry which could also be used to locate it.
Stupid question, perhaps: was/it possible for this sub to have any kind of beaconing or communication system that works at depth? It seems like one of this first things I'd investigate before deciding to build a sub.
Earlier quoted context omitted.
I guess for the immense pressure you get at that depth. However an emergency release would still make sense.
But, as with airplane doors (but in the opposite direction), if the door was designed to open outwards then you couldn't open it under pressure no matter how hard you pushed