To: DUMBGRUNT
a hollow, solid cylinder?............................
5 posted on
06/23/2021 7:41:01 AM PDT by
Red Badger
(Homeless veterans camp in the streets while illegal aliens are put up in hotels.....................)
To: Red Badger
> a hollow, solid cylinder? <
I caught that too. I guess a solid, hollow cylinder wouldn’t work as well.
8 posted on
06/23/2021 7:54:05 AM PDT by
Leaning Right
(I have already previewed or do not wish to preview this composition.)
To: Red Badger
Kind of like this?
20 posted on
06/23/2021 8:38:17 AM PDT by
Larry Lucido
(Donate! Don't just post clickbait!)
To: Red Badger
It’s solid except where it isn’t. Hope that helps!
24 posted on
06/23/2021 8:42:38 AM PDT by
coloradan
(They're not the mainstream media, they're the gaslight media. It's what they do. )
To: Red Badger
—”a hollow, solid cylinder?..”
Guessing, solid would be less work to manufacture and balance?
31 posted on
06/23/2021 9:06:51 AM PDT by
DUMBGRUNT
(("The enemy has overrun us. We are blowing up everything. Vive la France!"Dien Bien Phu last message)
To: Red Badger
Carbon fiber overwrap for some rifle barrel tubes gives strength.
Musk’s recent motor advancement is a carbon fiber wrap applied under high yarn tension to provide a pre-compression of the copper rotor component. Nearly nil dimensional change up to the 20,000 rpm operating specification.
A hollow tube for a flywheel might just be feasible. Energy stored increases as V squared. Drag increases as V cubed, so put the rotor in a vacuum. Use magnetic levitation to cut bearing losses. Place in a Kevlar bunker as a safety precaution.
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