Article

2025-03-28 Science & Technology

Marine Corps bets on electric seagliders 'invisible' to enemy radar for medevac missions at sea

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Posted by Skidmark 2025-03-28 00:22|| || Front Page|| [11135 views ] Top

#1 Lithium batteries and seawater don't mix very well.

But this concept is a cool one and I wish them success.

Personally,I would just replace the batteries with a diesel generator as it can run on jet fuel (kerosene) as wel and probabily weight the same or less.

What the article doesn't mention is how many SHP (Shaft Horse-Power)each of the electric motors can product or even the total SHP of all 12 motors together. It might be a bit easier to replace the motors with two or four small turboprops?

Posted by Seeking Cure For Ignorance 2025-03-28 04:49|| 2025-03-28 04:49|| Front Page Top

#2 Aluminum-graphene battery technology might be the answer to the 'seawater test', but that's a few years out. Sodium-ion is close, but then there's that seawater thing again.

There are other compound types being developed, but they're more for long-term power storage and not for use with motors which require a more instantaneous discharge.

Posted by Mullah Richard 2025-03-28 06:16|| 2025-03-28 06:16|| Front Page Top

#3 Regent’s Viceroy, which holds 12 passengers

The pictured window placement would suggest 6 rows of two. That's 2 stretchers and support gear.

Posted by Skidmark 2025-03-28 06:41|| 2025-03-28 06:41|| Front Page Top

#4 I just remember that the IC engine was developed in (run up to WWI) for planes.

Posted by Grom the Affective 2025-03-28 07:19|| 2025-03-28 07:19|| Front Page Top

#5 Diesel-electric subs have successfully used batteries for years and years. The trick is to keep the water on the outside and the air on the inside.

Posted by SteveS 2025-03-28 08:44|| 2025-03-28 08:44|| Front Page Top

#6 water on the outside and the air on the inside.

I understand that the technical definition of ships is things that move through water, keeping the water on the outside and air on the inside. And that nowadays we differentiate them from space ships: things that move through air and space, keeping more air or vacuum on the outside and air and some water on the inside.

;-)

Posted by trailing wife 2025-03-28 10:54|| 2025-03-28 10:54|| Front Page Top

#7 Lieutenant (j.g.) Nathan Green Gordon won the CMOH for his daring rescue of 15 downed airmen under fire during a mission in Kavieng Harbor, New Ireland, on February 15, 1944.

I think he rescued three crews with the last being like 600 yards off an occupied beach.

Posted by Super Hose 2025-03-28 12:35|| 2025-03-28 12:35|| Front Page Top

#8 Diesel-electric subs have successfully used batteries for years and years

Yes, but those are typically lead-acid battery. a bigger version of your car battery.

Posted by Seeking Cure For Ignorance 2025-03-28 14:59|| 2025-03-28 14:59|| Front Page Top

23:24 Skidmark
22:19 trailing wife
21:27 Procopius2k
21:26 Procopius2k
21:03 swksvolFF
20:44 swksvolFF
20:36 swksvolFF
20:34 KBK
20:27 SteveS
20:05 Glolutch Tingle1702
18:58 SteveS
18:23 SteveS
18:23 Rambler
17:57 Lord Garth
16:47 Bobby
16:07 Glenmore
15:16 Grom the Affective
15:10 Angimp Squank3949
14:59 Seeking Cure For Ignorance
14:58 Angimp Squank3949
14:51 Elmerert Hupens2660
14:38 swksvolFF
14:29 Elmerert Hupens2660
14:29 Mullah Richard