mtled t1_jdn7pxw wrote on March 25, 2023 at 5:35 PM

Reply to comment by Zombieff in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh

I admit I misread your comment! Sorry about that, have a nice day!

mtled t1_jdn53f2 wrote on March 25, 2023 at 5:17 PM

Reply to comment by Zombieff in TIL, the placenta that forms with a fetus isn't created by the mother. It grows from the fertilized egg and some fetuses actually develop outside the uterus attached to the intestines in the body cavity. by darw1nf1sh

The cells of the placenta are the foetus' DNA. It is not her organ, it is the foetus'.

mtled t1_itsuf8i wrote on October 26, 2022 at 1:21 AM

Reply to comment by Bott 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

Then get to work designing and certifying it.

In the meantime, the next generation of aircraft tracking and distress alerting is GADSS, and more than a few smart people have been working on it. It'll start to be implemented in some countries in 2025.

Feel free to go to the source material at ICAO, read the EASA rulemaking and means of compliance guidance and tell the industry that you're "sure" they could do better.

mtled t1_itstmeo wrote on October 26, 2022 at 1:15 AM

Reply to comment by LNL_HUTZ 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

ICAO GADSS recommendation. A certain part of this idea is being implemented but it's very costly and will take time. Of the big nations, EASA is taking the lead, with a new aircraft of 27000kg+ mandate to have these systems installed by Jan 1, 2025.

To my knowledge existing aircraft won't be retrofit, but I could be mistaken. At least, not any time soon.

The industry is constantly studying and recommending new regulations and standards, it's just always a balance of feasibility, cost and the incremental safety increase.

mtled t1_itssrej wrote on October 26, 2022 at 1:08 AM

Reply to comment by doglaughington 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

The industry is working on it, but it's difficult to get the industry up to speed quickly due to cost/infrastructure issues and, as with most things, pandemic delays.

ICAO GADSS.

EASA (European aircraft) have adopted Jan 1 2025 to mandate that all new built aircraft exceeding 27000kg have such a system installed. Offhand I don't know if, ever, existing older aircraft or smaller ones will need to install as it's a very expensive modification to integrate into an aircraft.

I'm also not aware of any current implementation timeline for FAA, Canadian or other country registered planes. I think India has adopted the ICAO mandate, which has the same 2025 date. I'm much too lazy to try to investigate this in-depth.