Bott

Bott t1_j6n4vj0 wrote

Reply to comment by Ok-Apricot-3156 in Insulating pipes from an electric-water heater by UEmd

Do you mean don't insulate the cold water pipes in your home, or don't insulate the cold water pipe going into the water heater?

I found that the cold water pipe (about 1 or 2 feet of it) going into the water heater was warm, and I insulated that. Should I remove that 1 or 2 feet of insulation?

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Bott t1_its742q wrote

Reply to comment by beachedwhale1945 in TIL that flight recorders must be able to withstand an acceleration of 3400 g for 6.5 milliseconds and that this is roughly equivalent to an impact velocity of 270 knots (310 mph; 500 km/h). by IchBinKoloss

Several things. You assume that as a plane is crashing, the datastream fails. Why? Given such, any data are better than none.

Last point regarding rarity of use: How often do flight data recorders get read? RARE instances.

The title of this thread marvelled at the technology of the hardware devices. I'm sure a fraction of that technology could make online flight recorders happen.

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Bott t1_its0vbd wrote

Reply to comment by 747ER in TIL that flight recorders must be able to withstand an acceleration of 3400 g for 6.5 milliseconds and that this is roughly equivalent to an impact velocity of 270 knots (310 mph; 500 km/h). by IchBinKoloss

I believe that the flight data and voice recorders loop after a set time, perhaps 30 minutes.

The proposed system would also only store for 30 minutes, unless there was a loss of signal. Resumption of signal, would send buffered plane data, and reset the timer.

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Bott t1_itrwr0x wrote

Reply to comment by zaahc in TIL that flight recorders must be able to withstand an acceleration of 3400 g for 6.5 milliseconds and that this is roughly equivalent to an impact velocity of 270 knots (310 mph; 500 km/h). by IchBinKoloss

I would like to make a cryptic statement. Please think about it. Then You can comment and call me stupid, again. Here we go:

"I hope they have Electronic Skip Protection on the recorders."

27 years ago...

I'll go on...

See, minimally, I would see a data splitter. (Or an output from the recorder.) Goes to the best available satellite technology. Unlike transponder, it cannot be turned off. Arguments both ways on that one. Bottom line is, sure, keep that hardware, just give the satellite link a data feed.

In the event of a crash, the data would be there in the satellite system. Maybe, what, 80-90 percent of the time with good satellite coverage. That, to me, is a bit of a benefit. Instead of waiting for a search, that has a finite probability of failing, for the data and voice recorders, there is a good chance the data will be available at the push of a button.

Could have been really valuable for Malaysian Air Flight 370. (2014)

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